Quectel Smart Module Series Supplement

SA800U-WF
Hardware Design
Smart Module Series
Version: 1.0
Date: 2021-01-13
Status: Released
www.quectel.com

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accept any liability for any injury, loss or damage of any kind incurred by use of or reliance upon the
information.All information supplied herein is subject to change without prior notice.
Disclaimer
While Quectel has made efforts to ensure that the functions and features under development are free
from errors, it is possible that these functions and features could contain errors, inaccuracies and
omissions. Unless otherwise provided by valid agreement, Quectel makes no warranties of any kind,
implied or express, with respect to the use of features and functions under development. To the maximum
extent permitted by law, Quectel excludes all liability for any loss or damage suffered in connection with
the use of the functions and features under development, regardless of whether such loss or damage
may have been foreseeable.
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Copyright
The information contained here is proprietary technical information of Quectel. Transmitting, reproducing,
disseminating and editing this document as well as using the content without permission are forbidden.
Offenders will be held liable for payment of damages. All rights are reserved in the event of a patent grant
or registration of a utility model or design.
Copyright © Quectel Wireless Solutions Co., Ltd. 2021. All rights reserved.

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Safety Information
The following safety precautions must be observed during all phases of operation, such as usage, service
or repair of any cellular terminal or mobile incorporating the module. Manufacturers of the cellular terminal
should notify users and operating personnel of the following safety information by incorporating these
guidelines into all manuals of the product. Otherwise, Quectel assumes no liability for customers’ failure to
comply with these precautions.
Full attention must be paid to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. Please comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. The operation
of wireless appliances in an aircraft is forbidden to prevent interference with
communication systems. If there is an Airplane Mode, it should be enabled prior to
boarding an aircraft. Please consult the airline staff for more restrictions on the use
of wireless devices on an aircraft.
Wireless devices may cause interference on sensitive medical equipment, so
please be aware of the restrictions on the use of wireless devices when in
hospitals, clinics or other healthcare facilities.
Cellular terminals or mobiles operating over radio signal and cellular network
cannot be guaranteed to connect in certain conditions, such as when the mobile bill
is unpaid or the (U)SIM card is invalid. When emergency help is needed in such
conditions, use emergency call if the device supports it. In order to make or receive
a call, the cellular terminal or mobile must be switched on in a service area with
adequate cellular signal strength. In an emergency, the device with emergency call
function cannot be used as the only contact method considering network
connection cannot be guaranteed under all circumstances.
The cellular terminal or mobile contains a transceiver. When it is ON, it receives
and transmits radio frequency signals. RF interference can occur if it is used close
to TV sets, radios, computers or other electric equipment.
In locations with explosive or potentially explosive atmospheres, obey all posted
signs and turn off wireless devices such as mobile phone or other cellular
terminals. Areas with explosive or potentially explosive atmospheres include
fuelling areas, below decks on boats, fuel or chemical transfer or storage facilities,
and areas where the air contains chemicals or particles such as grain, dust or
metal powders.

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About the Document
Revision History
Version
Date
Author
Description
-
2020-07-31
Light WANG/
Finley ZHANG
Creation of the document
1.0
2021-01-13
Light WANG/
Finley ZHANG
First official release

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Contents
Safety Information.......................................................................................................................................3
About the Document...................................................................................................................................4
Contents.......................................................................................................................................................5
Table Index...................................................................................................................................................7
Figure Index.................................................................................................................................................9
1Introduction........................................................................................................................................10
2Product Concept................................................................................................................................11
2.1. General Description..................................................................................................................11
2.2. Key Features.............................................................................................................................12
2.3. Functional Diagram...................................................................................................................14
2.4. Evaluation Board.......................................................................................................................15
3Application Interfaces .......................................................................................................................16
3.1. General Description..................................................................................................................16
3.2. Pin Assignment .........................................................................................................................17
3.3. Pin Description..........................................................................................................................18
3.4. Power Supply............................................................................................................................38
3.4.1. Power Supply Pins.........................................................................................................38
3.4.2. Decrease Voltage Drop..................................................................................................38
3.4.3. Reference Design for Power Supply..............................................................................39
3.5. Turn on and off Scenarios.........................................................................................................40
3.5.1. Turn on the Module Using PWRKEY.............................................................................40
3.5.2. Turn on the ModuleAutomatically Using CBL_PWR_N................................................42
3.5.3. Turn off/Restart the Module ...........................................................................................43
3.6. VRTC Interface .........................................................................................................................43
3.7. Power Output............................................................................................................................44
3.8. Battery Charging and Management..........................................................................................45
3.9. USB Interfaces..........................................................................................................................48
3.9.1. USB1 Interface...............................................................................................................48
3.9.1.1. USB Type-C Mode...............................................................................................48
3.9.1.2. DisplayPort Mode.................................................................................................50
3.9.2. USB2 Interface...............................................................................................................51
3.9.3. Design Principles ...........................................................................................................52
3.10. UART Interface..........................................................................................................................54
3.11. PCIe Interfaces .........................................................................................................................55
3.12. SD Card Interface .....................................................................................................................57
3.13. GPIO Interfaces ........................................................................................................................59
3.14. I2C Interfaces............................................................................................................................60
3.15. SPI Interfaces............................................................................................................................61
3.16. ADC Interfaces..........................................................................................................................62
3.17. Vibrator Drive Interface.............................................................................................................62

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3.18. LCM Interfaces..........................................................................................................................63
3.19. Touch Panel Interface...............................................................................................................67
3.20. Camera Interfaces.....................................................................................................................68
3.20.1. Design Considerations...................................................................................................73
3.20.2. Flashlight Interfaces.......................................................................................................77
3.21. Sensor Interfaces......................................................................................................................78
3.22. Audio Interfaces........................................................................................................................79
3.23. Emergency Download Interface................................................................................................80
4Wi-Fi and BT.......................................................................................................................................81
4.1. Wi-Fi Overview..........................................................................................................................81
4.1.1. Wi-Fi Performance.........................................................................................................82
4.2. BT Overview..............................................................................................................................84
4.2.1. BT Performance.............................................................................................................85
5Antenna Connection..........................................................................................................................86
5.1. Antenna Connectors.................................................................................................................86
5.2. Antenna Installation...................................................................................................................87
5.2.1. Antenna Requirements ..................................................................................................87
5.2.2. Recommended Mating Plug forAntenna Connection ...................................................88
6Reliability, Radio and Electrical Characteristics............................................................................90
6.1. Absolute Maximum Ratings......................................................................................................90
6.2. Power Supply Ratings...............................................................................................................90
6.3. Operating and Storage Temperatures.......................................................................................91
6.4. Current Consumption................................................................................................................91
6.5. Electrostatic Discharge.............................................................................................................93
6.6. Thermal Dissipation ..................................................................................................................93
7Mechanical Dimensions....................................................................................................................95
7.1. Mechanical Dimensions of the Module.....................................................................................95
7.2. Recommended Footprint ..........................................................................................................97
7.3. Top and Bottom View of the Module.........................................................................................98
8Storage and Packaging.....................................................................................................................99
8.1. Storage......................................................................................................................................99
8.2. Packaging ...............................................................................................................................100
9Appendix References......................................................................................................................102

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Table Index
Table 1: SA800U-WF Frequency Bands.....................................................................................................11
Table 2: SA800U-WF Key Features........................................................................................................... 12
Table 3: I/O Parameters Definition.............................................................................................................18
Table 4: Pin Description ............................................................................................................................. 18
Table 5: Power Description ........................................................................................................................44
Table 6: Pin Definition of Charging Interface .............................................................................................45
Table 7: Pin Definition of USB TYPE-C Interface ......................................................................................48
Table 8: Pin Definition of VCONN Circuit................................................................................................... 49
Table 9: Pin Definition of USB Type-C/DisplayPort Mode .........................................................................50
Table 10: Pin Definition of USB2................................................................................................................ 51
Table 11: USB Trace Length Inside the Module......................................................................................... 52
Table 12: Pin Definition of Debug UART Interface..................................................................................... 54
Table 13: Pin Definition of PCIe Interfaces................................................................................................ 55
Table 14: Pin Definition of SD Card Interface............................................................................................57
Table 15: SD Card Signal Trace Length Inside the Module....................................................................... 59
Table 16: Pin Definition of GPIO Interfaces............................................................................................... 59
Table 17: Pin Definition of I2C Interfaces...................................................................................................60
Table 18: Pin Definition of SPI Interfaces .................................................................................................. 61
Table 19: Pin Definition of ADC Interfaces.................................................................................................62
Table 20: Pin Definition of Vibrator Drive Interface....................................................................................62
Table 21: Pin Definition of LCM Interfaces.................................................................................................63
Table 22: Pin Definition of Touch Panel Interface...................................................................................... 67
Table 23: Pin Definition of Camera Interfaces ...........................................................................................68
Table 24: CSI Data Rate and PCB Maximum Trace Length (D-PHY)....................................................... 73
Table 25: DSI Data Rate and PCB Maximum Trace Length (D-PHY).......................................................74
Table 26: MIPI Trace Length Inside the Module ........................................................................................74
Table 27: Pin Definition of Flashlight Interfaces......................................................................................... 77
Table 28: Pin Definition of Sensor Interfaces.............................................................................................78
Table 29: Pin Definition of Audio Interfaces...............................................................................................79
Table 30: Wi-Fi Transmitting Performance................................................................................................. 82
Table 31: Wi-Fi Receiving Performance.....................................................................................................83
Table 32: BT Data Rate and Versions........................................................................................................ 84
Table 33: BT Transmitting and Receiving Performance.............................................................................85
Table 34: Definition ofAntenna Connectors...............................................................................................86
Table 35: Operating Frequency.................................................................................................................. 87
Table 36:Antenna Requirements............................................................................................................... 87
Table 37: Absolute Maximum Ratings........................................................................................................90
Table 38: SA800U-WF Power Supply Ratings...........................................................................................90
Table 39: Operating and Storage Temperatures........................................................................................91
Table 40: SA800U-WF Current Consumption (2 ×2 MIMO).....................................................................91
Table 41: ESD Characteristics (Temperature: 25 °C , Humidity: 45 %)...................................................... 93

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Table 42: Tray Package............................................................................................................................101
Table 43: Related Documents..................................................................................................................102
Table 44: Terms and Abbreviations.......................................................................................................... 102

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Figure Index
Figure 1: Functional Diagram.....................................................................................................................15
Figure 2: PinAssignment (Top View).........................................................................................................17
Figure 3: Voltage Drop Sample.................................................................................................................. 38
Figure 4: Star Structure of Power Supply...................................................................................................39
Figure 5: Reference Circuit of Power Supply............................................................................................. 39
Figure 6: Turn on the Module Using Driving Circuit................................................................................... 40
Figure 7: Turn on the Module Using Keystroke .........................................................................................41
Figure 8: Timing of Turning on the Module................................................................................................ 41
Figure 9: Turn on the Module Using CBL_PWR_N................................................................................... 42
Figure 10: Timing of Restarting the Module............................................................................................... 43
Figure 11: RTC Powered by Coin Cell....................................................................................................... 43
Figure 12: Reference Design for Battery Charging Circuit........................................................................ 47
Figure 13: USB Type-C Interface Reference Design................................................................................. 49
Figure 14: VCONN Reference Design....................................................................................................... 50
Figure 15: DisplayPort Reference Design .................................................................................................51
Figure 16: USB Type-AInterface Reference Design (USB2 for Host Mode)............................................52
Figure 17: Reference Circuit with Level Translator Chip........................................................................... 54
Figure 18: RS-232 Level Match Circuit......................................................................................................54
Figure 19: PCIe Interfaces Reference Circuit............................................................................................ 56
Figure 20: Reference Circuit for SD Card Interface................................................................................... 58
Figure 21: Reference Circuit for Vibrator Connection................................................................................ 63
Figure 22: Reference Circuit Design for LCM0 Interface...........................................................................65
Figure 23: Reference Circuit Design for LCM1 Interface........................................................................... 66
Figure 24: Reference Design of LCM1 External Backlight Driving Circuit ................................................67
Figure 25: Reference Circuit Design for Touch Panel Interface ................................................................68
Figure 26: Reference Circuit Design for CSI0 ........................................................................................... 71
Figure 27: Reference Circuit Design for Power of CSI0............................................................................ 72
Figure 28: Reference Circuit Design for Flashlight Interfaces...................................................................77
Figure 29: Reference Circuit Design for Emergency Download Interface................................................. 80
Figure 30: Antenna Connectors .................................................................................................................86
Figure 31: Dimensions of the ECT 818000500 Connector (Unit: mm)...................................................... 88
Figure 32: Mechanicals of the Mating Plug (Unit: mm).............................................................................. 89
Figure 33: Thermal Dissipation..................................................................................................................94
Figure 34: Module Top and Side Dimensions............................................................................................95
Figure 35: Module Bottom Dimensions (Bottom View)..............................................................................96
Figure 36: Recommended Footprint (Top View)........................................................................................97
Figure 37: Top View of SA800U-WF Module.............................................................................................98
Figure 38: Bottom View of SA800U-WF Module .......................................................................................98
Figure 39: Tray Dimensions.....................................................................................................................100
Figure 40: Package Details......................................................................................................................101

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1Introduction
This document defines the SA800U-WF module and describes its air interfaces and hardware interfaces.
This document helps you quickly understand module interface specifications, electrical and mechanical
details as well as other related information of the module. Associated with application notes and user
guides, you can use the module to design and set up applications easily.

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2Product Concept
2.1. General Description
SA800U-WF is a smart module based on Qualcomm platform and Android operating system, which
provides industrial grade performance. Its general features are listed below:
Support short-range wireless communication via Wi-Fi 802.11a/b/g/n/ac and BT 5.0
Support multiple audio and video codecs
Built-in high performanceAdrenoTM 630 graphics processing unit
Dedicated low-power Snapdragon sensor core DSP to support always-on use cases
Provide multiple audio and video input/output interfaces as well as abundant GPIO interfaces
The following table shows the supported frequency bands of the module.
Table 1: SA800U-WF Frequency Bands
SA800U-WF is a 396-pin module, which supports B2B connection. With a compact profile of 60.0 mm ×
37.0 mm × 6.55 mm, the module can meet almost all requirements for M2M applications such as smart
meeting, smart home, security, routers, AR glasses, mobile computing devices, PDA phone, tablet PC,
etc.
“*” means under development.
Type
Frequency Bands
802.11a/b/g/n/ac
2402–2482 MHz
5180–5825 MHz
BT 5.0
2402–2480 MHz
FM*
76–108 MHz
NOTE

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2.2. Key Features
The following table describes the detailed features of the module.
Table 2: SA800U-WF Key Features
Features
Details
Applications Processor
64-bit Kryo 385 applications processor
Quad high-performance Kyro cores at 2.649 GHz with 256 KB L2 cache
per core
Quad low-power Kyro cores at 1.766 GHz with 128 KB L2 cache per core
GPU
AdrenoTM 630 graphics processing unit –4K @ 60 fps or 2 ×2K @ 90 fps
Memory
64 GB UFS + 4 GB LPDDR4X (default)
256 GB UFS + 8 GB LPDDR4X (optional)
Operating System
Android 9.0/10.0
Power Supply
VBAT Supply Voltage: 3.55–4.4 V
Typ. 3.8 V
WLAN Features
2.4/5 GHz, 802.11a/b/g/n/ac
Support 2 ×2 MIMO, maximally up to 866 Mbps
SupportAP and STA modes
Bluetooth Features
BT 2.1+EDR/3.0/4.1 LE/4.2 BLE/BT 5.0
LCM Interfaces
Support two groups of 4-lane MIPI DSI
Support dual LCDs
Support 2560 × 1600 @ 60 fps VESA DSC 1.1 primary display with 4
lanes
Support 4K @ 60 fps over DisplayPort
Provide one high voltage output for powering strings of WLEDs and
29.6 V OVP
Provide four drivers for sinking the current from WLED strings, and each
sink current can reach up to 30 mA
Camera Interfaces
Support three groups of 4-lane MIPI CSI and one 2-lane MIPI CSI 1),up
to 2.5 Gbps/lane,
Support 4 cameras (4-lane + 4-lane + 4-lane + 2-lane)
Up to 32 MP with dual ISP
Video Codec
Video encoding and decoding up to 4K @ 60 fps
Audio Codec
QCELP, EVS, EVRC, EVRC-B, EVRC-WB, G.7Gen, G.729 A/AB

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USB Interfaces
2 USB interfaces which comply with both USB 3.1 and USB 2.0
specifications
Support up to 5 Gbps on USB 3.1 and 480 Mbps on USB 2.0
USB1 supports USB OTG and DisplayPort, and can be used for AT
command communication, data transmission, software debugging and
firmware upgrade
USB2 only supports USB host mode
PCIe Interfaces
2 PCIe Interfaces:
PCIe0 is a Gen 2 1-lane interface
PCIe1 is a Gen 3 1-lane interface
UART Interface
One 2-wire debug UART interface used for debugging by default
Vibrator Drive Interface
Drive ERM/LRA vibrator
SDIO Interfaces
2 SDIO interfaces:
The SDIO function of SDC4 is not supported by default
As the SD card interface, SDC2 complies with SD 3.0 specifications
I2C Interfaces
6 I2C interfaces, used for peripherals such as TP, camera, sensor, etc.
I2S Interfaces
3 I2S interfaces
Flashlight Interfaces
3 high-current flash LED drivers, which supports both flash and torch modes
Up to 1.5 A for FLASH_LED1/FLASH_LED2 in flash mode
Up to 0.75 A for FLASH_LED3 in flash mode
ADC Interfaces
2 general-purpose ADC interfaces
SPI Interfaces
3 SPI interfaces, only support master mode
Charging Interface
Used for battery voltage detection, fuel gauge, battery temperature detection
Real Time Clock
Supported
Antenna Connection
4 antenna connectors: Wi-Fi/BT, Wi-Fi MIMO, BT*, FM*
Physical Characteristics
Size: (60.0 ±0.15) mm × (37.0 ±0.15) mm × (6.55 ±0.2) mm
Package: B2B
Weight: approx. 15 g
Temperature Range
Operating temperature range: -35 °C to +75 °C 2)
Storage temperature range: -40 °C to +90 °C
Firmware Upgrade
Over USB interface or OTA
RoHS
All hardware components are fully compliant with EU RoHS directive

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1. 1) The 2-lane MIPI CSI can only get data of RAW format. It can be used for ToF/3D camera modules
but cannot be used for display.
2. 2) Within the operating temperature range, the module is IEEE compliant.
3. “*” means under development.
2.3. Functional Diagram
The following figure shows a block diagram of SA800U-WF and illustrates the major functional parts.
Power management
Baseband
LPDDR4X + UFS flash
Peripheral interfaces
-- USB interfaces
-- PCIe interfaces
-- UART interface
-- I2C interfaces
-- SPI interfaces
-- SD card interface
-- GPIO interfaces
-- SLIMbus interface
-- I2S interfaces
-- ADC interfaces
-- Vibrator drive interface
-- LCM (MIPI) interfaces
-- TP (touch panel) interface
-- Camera (MIPI) interfaces
-- Flashlight interfaces
-- Sensor interfaces
-- Emergency download interface
NOTES

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Baseband
WCN
LPDDR4X UFS
USB_VBUS
3×Flash LEDs
WLED
Motor
Charge
OTG
Wi-Fi/BT ANT
GPIOs
I2Cs
UART
2×USB
3.1
4×CAM
TP2×LCMSPIs
2×ADC
LPG
Flash
Haptics
RFCLK
BBCLK
MEM
Multimedia Connectivity
Wireless Interface
Processors
Power
Signal
Power
Function
RFFE 0
XO
PMU
HK ADC
VRTC
VBAT
2×PWM
PWRKEY
PMI
SD_LDO13A
VREG_S4A_1V8
SD_LDO21A
LVS1A_1V8
LVS2A_1V8
LDO19A_3V0
LDO24A_3V075
LDO14A_1V88
LDO28A_3V0
Audio
38.4M
FM ANT
RGB RGB
WLED
Battery
Display Bias
VDISP
XO
38.4M
2×PCIe 2×SDIO
RFFE 1
Wi-Fi MIMO ANT
BT ANT
PDET_IN
CH0 PDET_IN CH1
2.4G_TRX2.4G_TRX 5G_TX5G_TX5G_RX 5G_RX
VREG_BOB
LDO12A_1V8
Figure 1: Functional Diagram
2.4. Evaluation Board
To help you develop applications with SA800U-WF conveniently, Quectel supplies the evaluation board,
USB to RS-232 converter cable, USB Type-C data cable, power adapter, earphone, antenna and other
peripherals to control or test the module. For more details, see document [1].

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3Application Interfaces
3.1. General Description
SA800U-WF is equipped with 396 pins that can be embedded into cellular application platform. The
following chapters provide the detailed description of interfaces listed below.
Power supply
VRTC interface
Charging interface
USB interfaces
UART interface
PCIe interfaces
SD card interface
GPIO interfaces
I2C interfaces
SPI interfaces
ADC interfaces
Vibrator drive interface
LCM interfaces
TP interface
Camera interfaces
Flashlight interfaces
Sensor interfaces
Audio interfaces
Emergency download interface

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3.2. Pin Assignment
The following figure shows the pin assignment of SA800U-WF module.
J1-2
J1-4
J1-10
J1-6
J1-8
J1-14
J1-18
J1-12
J1-16
J1-20
J1-26
J1-22
J1-24
J1-28
J1-34
J1-30
J1-32
J1-36
J1-42
J1-38
J1-40
J1-44
J1-50
J1-46
J1-48
J1-52
J1-58
J1-54
J1-56
J1-60
J1-66
J1-62
J1-64
J1-68
J1-74
J1-70
J1-72
J1-76
J1-82
J1-78
J1-80
J1-84
J1-86
J1-95
J1-97
J1-57
J1-99
J1-101
J1-61
J1-65
J1-59
J1-63
J1-67
J1-73
J1-69
J1-71
J1-75
J1-35
J1-77
J1-33
J1-37
J1-43
J1-39
J1-41
J1-45
J1-51
J1-47
J1-49
J1-17
J1-23
J1-19
J1-21
J1-25
J1-31
J1-27
J1-29
J1-55
J1-7
J1-53
J1-15
J1-9
J1-5
J1-11
J1-13
J1-3
J1-1
J1-88
J1-90
J1-96
J1-92
J1-94
J1-100
J1-104
J1-98
J1-102
J1-106
J1-112
J1-108
J1-110
J1-114
J1-120
J1-116
J1-118
J1-122
J1-128
J1-124
J1-126
J1-130
J1-136
J1-132
J1-134
J1-138
J1-144
J1-140
J1-142
J1-146
J1-152
J1-148
J1-150
J1-154
J1-160
J1-156
J1-158
J1-162
J1-168
J1-164
J1-166
J1-93
J1-91
J1-85
J1-89
J1-87
J1-81
J1-103
J1-83
J1-79
J1-117
J1-123
J1-119
J1-121
J1-125
J1-131
J1-127
J1-129
J1-133
J1-105
J1-109
J1-107
J1-151
J1-145
J1-149
J1-147
J1-143
J1-137
J1-141
J1-139
J1-135
J1-115
J1-111
J1-113
J1-153
J1-159
J1-155
J1-157
J1-161
J1-167
J1-163
J1-165
PCIe GNDPOWER Camera Other SDIO UFS SPI
J2-2
J2-4
J2-10
J2-6
J2-8
J2-14
J2-18
J2-12
J2-16
J2-20
J2-26
J2-22
J2-24
J2-28
J2-34
J2-30
J2-32
J2-36
J2-42
J2-38
J2-40
J2-44
J2-50
J2-46
J2-48
J2-52
J2-58
J2-54
J2-56
J2-60
J2-66
J2-62
J2-64
J2-68
J2-74
J2-70
J2-72
J2-76
J2-82
J2-78
J2-80
J2-84
J2-86
J2-95
J2-97
J2-57
J2-99
J2-101
J2-61
J2-65
J2-59
J2-63
J2-67
J2-73
J2-69
J2-71
J2-75
J2-35
J2-77
J2-33
J2-37
J2-43
J2-39
J2-41
J2-45
J2-51
J2-47
J2-49
J2-17
J2-23
J2-19
J2-21
J2-25
J2-31
J2-27
J2-29
J2-55
J2-7
J2-53
J2-15
J2-9
J2-5
J2-11
J2-13
J2-3
J2-1
J2-88
J2-90
J2-96
J2-92
J2-94
J2-100
J2-104
J2-98
J2-102
J2-106
J2-112
J2-108
J2-110
J2-114
J2-120
J2-116
J2-118
J2-122
J2-128
J2-124
J2-126
J2-130
J2-136
J2-132
J2-134
J2-138
J2-144
J2-140
J2-142
J2-146
J2-152
J2-148
J2-150
J2-154
J2-160
J2-156
J2-158
J2-162
J2-168
J2-164
J2-166
J2-93
J2-91
J2-85
J2-89
J2-87
J2-81
J2-103
J2-83
J2-79
J2-117
J2-123
J2-119
J2-121
J2-125
J2-131
J2-127
J2-129
J2-133
J2-105
J2-109
J2-107
J2-151
J2-145
J2-149
J2-147
J2-143
J2-137
J2-141
J2-139
J2-135
J2-115
J2-111
J2-113
J2-153
J2-159
J2-155
J2-157
J2-161
J2-167
J2-163
J2-165
GPIO LCM TP USB AUDIO Keypad Charging UART IIC
J1 J2
TOP View TOP View
J4-30
J4-29
J4-28
J4-8
J4-9
J4-10
J4-11
J4-27
J4-26
J4-23
J4-25
J4-24
J4-21
J4-19
J4-22
J4-20
J4-18
J4-17
J4-16
J4-7
J4-6
J4-3
J4-5
J4-4
J4-1
J4-12
J4-2
J4-13
J4-15
J4-14
J3-15
J3-14
J3-13
J3-23
J3-24
J3-25
J3-26
J3-12
J3-11
J3-8
J3-10
J3-9
J3-6
J3-4
J3-7
J3-5
J3-3
J3-2
J3-1
J3-22
J3-21
J3-18
J3-20
J3-19
J3-16
J3-27
J3-17
J3-28
J3-30
J3-29
J3 J4
TOP View TOP View
Figure 2: Pin Assignment (Top View)

Smart Module Series
SA800U-WF Hardware Design
SA800U-WF_Hardware_Design 18 / 106
3.3. Pin Description
Table 3: I/O Parameters Definition
The following tables show the SA800U-WF’s pin definitions and electrical characteristics.
Table 4: Pin Description
Type
Description
AI
Analog Input
AO
Analog Output
AIO
Analog Input/Output
DI
Digital Input
DO
Digital Output
DIO
Digital Input/Output
OD
Open Drain
PI
Power Input
PO
Power Output
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VBAT
J1-159,
J1-160,
J1-161,
J1-162,
J1-163,
J1-164,
J1-165,
J1-166,
J1-167,
J1-168
PI/
PO
Power supply for
the module
Vmax = 4.4 V
Vmin = 3.55 V
Vnom = 3.8 V
Must be provided
with sufficient
current of up to
3 A.
It is suggested to
use a TVS to
increase voltage
surge withstand
capability.
VREG_BOB
J2-140,
J2-142
PO
BOB output
Vnom = 3.7 V
IOmax = 2000 mA
Power supply for
external LDOs.

Smart Module Series
SA800U-WF Hardware Design
SA800U-WF_Hardware_Design 19 / 106
VREG_S4A_1V8
J2-124,
J2-126,
J2-128
PO
1.8 V output
Vnom = 1.8 V
IOmax = 2000 mA
Power supply for
external GPIO’s
pull-up circuit and
level shift circuit.
LVS1A_1V8
J1-149
PO
1.8 V output
Vnom = 1.8 V
IOmax = 300 mA
Power supply for
IOVDD of
cameras.
Add a 1.0–4.7 μF
bypass capacitor if
used.
If unused, keep
this pin open.
LVS2A_1V8
J2-148
PO
1.8 V output
Vnom = 1.8 V
IOmax = 100 mA
Power supply for
IOVDD or VDD of
sensors.
Add a 1.0–2.2 μF
bypass capacitor if
used.
If unused, keep
this pin open.
LDO12A_1V8
J3-12
PO
1.8 V output
Vnom = 1.8 V
IOmax = 300 mA
Connect this pin to
SHDN of
SMB1355 parallel
charger to make
the charger enter
low power mode.
If SMB1355 is
unused, keep this
pin open.
LDO14A_1V88
J4-9
PO
1.8 V output
Vnom = 1.8 V
IOmax = 50 mA
Power supply for
IOVDD of TP and
LCDs.
Add a 1.0–4.7 μF
bypass capacitor if
used.
If unused, keep
this pin open.
LDO19A_3V0
J2-150
PO
3.0 V output
Vnom = 3.0 V
IOmax = 600 mA
Power supply for
sensors
Add a 1.0–2.2 μF
bypass capacitor if
used.
If unused, keep
this pin open.