Digi ConnectCore MP15 Quick user guide

ConnectCore MP15
System-on-module
Hardware Reference Manual

Revision history—90002510
Revision Date Description
1P December 2022 Initial draft.
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ConnectCore MP15 System-on-Module 2

ConnectCore MP15 System-on-Module 3
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Contents
About the ConnectCore MP15
Features and functionality 5
Safety instructions 6
Block diagrams 6
ConnectCore MP15 module 7
STMicroelectronics STM32MP157 application processor 8
Power interfaces 9
System-on-module power architecture 9
Reference power architecture scheme 10
Electrical characteristics 10
Bootstrap 13
Wireless interfaces 13
WLAN IEEE 802.11a/b/g/n/ac 13
RF channels 15
Transmit power 18
Antenna ports 18
Bluetooth 18
Module pinout
External signals and pin multiplexing 19
Castellated pad signals and multiplexing 21
LGA pad signals and multiplexing 34
Module specifications
Mechanical specifications 71
Host PCB footprint and cutout 71
Weight 72
Environmental specifications 72
Socket options 72
ConnectCore MP15 System-on-Module 4

About the ConnectCore MP15 Features and functionality
ConnectCore MP15 System-on-Module 5
About the ConnectCore MP15
The Digi ConnectCore® MP15 development kit and System-on-Module (SOM) platform is a highly
integrated, cost-effective, connected, secure embedded solution, built on the STM32MP15x MPU
family. It integrates memory, power management, the Digi Microcontroller Assist™, pre-certified
wireless connectivity and advanced Digi TrustFence device security with a complete, open-source
Linux software platform based on the Yocto Project.
Features and functionality
nThe ConnectCore MP15 system-on-module is based on the STM32MP processor from
STMicroelectronics. This processor offers a number of interfaces, most of them multiplexed
and not available simultaneously. The module has the following features:
nSTM32MP157C dual ARM Cortex-A7 and single Cortex-M4 cores:
lCortex-A7 operating at up to 650 MHz.
l32 KB L1 instruction cache.
l32 KB L1 data cache.
l256 KB level 2 cache.
l3D GPU (Vivante - OpenGL ES 2.0) running at up to 533 MHz with performances up to 26
Mtriangle/s, 133 Mpixel/s.
lCortex-M4 operating at up to 209 MHz.
nUp to 512 GB, 16-bit DDR3 memory.
nUp to 512 GB, 8-bit SLC NAND flash memory.
nSTPMIC1A Power Management IC (PMIC):
lx4 adjustable buck SMPS converter.
lx1 boost SMPS.
lx1 USB OTG compliant power switch.
lx1 general purpose power switch.
lx4 adjustable general purpose LDOs.
lx1 DDR reference voltage LDO.
lx1 DDR3 termination/DDR bypass mode/general purpose LDO.
lx1 USB PHY LDO.
nIEEE 802.11 a/b/g/n/ac WLAN interface.
nBluetooth version 5.0.
nDebug interfaces:
lSystem JTAG controller for STM32MP157C.
nSTM32MP157C interfaces:
lx6 I2C.
lx4 UART.

About the ConnectCore MP15 Safety instructions
ConnectCore MP15 System-on-Module 6
lx4 USART.
lx6 SPI, three I2Ss full-duplex master/slave.
lx4 SAI.
lx1 SPDIF Rx.
lManagement data inpout/output slave (MDIOS).
lx3 SDMMC.
lUSB high-speed Host with two ports, two high-speed PHYs and a USB OTG high-speed with
full-speed PHY or high-speed PHY shared with second port of USB Host.
lx2 FDCAN, one of them supporting TTCAN mode.
lx1 Gigabit Ethernet.
lHDMI-CED.
lx1 Flexible memory control (FMC) interface.
lx1 Quad-SPI Flash memory interface.
lx2 ADCs with 16-bit max resolution.
lx2 12-bit D/A converters.
lx1 digital filters for sigma delta modulator (DFSDM) with 8 channels/6 filters.
lx1 camera interface for CMOS sensors.
lx1 LCD-TFT display controller.
lx1 MIPI DSI.
Safety instructions
nThe ConnectCore MP15 module cannot be guaranteed operation due to the radio link and so
should not be used for interlocks in safety critical devices such as machines or automotive
applications.
nThe ConnectCore MP15 module has not been approved for use in (this list is not exhaustive):
lnuclear applications
lexplosive or flammable atmospheres
nThere are no user serviceable components inside the ConnectCore MP15 module. Do not
modify the ConnectCore MP15 in any way. Modifications may exclude the module from any
warranty and can cause the ConnectCore MP15 to operate outside of regulatory compliance
for a given country, leading to the possible illegal operation of the radio.
nUse industry standard ESD protection when handling the ConnectCore MP15 module.
nTake care while handling to avoid electrical damage to the PCB and components.
nDo not expose ConnectCore MP15 module to water or moisture.
nUse this product with the antennas specified in the ConnectCore MP15 module user guides.
nThe end user must be told how to remove power from the ConnectCore MP15 module or to
locate the antennas 20 cm from humans or animals.
Block diagrams
The figures below show block diagrams of the ConnectCore MP15 module and of the
STMicroelectronics STM32MP157 application processor.

About the ConnectCore MP15 Block diagrams
ConnectCore MP15 System-on-Module 7
ConnectCore MP15 module

About the ConnectCore MP15 Block diagrams
ConnectCore MP15 System-on-Module 8
STMicroelectronics STM32MP157 application processor

About the ConnectCore MP15 Power interfaces
ConnectCore MP15 System-on-Module 9
Power interfaces
System-on-module power architecture
The ConnectCore MP15 requires two primary power supply inputs: VSYS and VSYS2, which are the
input power supplies to the on-module ST STPMIC1 power management IC (PMIC) that generates all
required supply voltages for the module as well as the external interfaces.
The following table summarizes the PMIC regulators and switches on the ConnectCore MP1 SOM:
PMIC
regulator
SOM power rail
name
Input power
supply
Internally
used
Externally
available
BUCK1 - VSYS2 YES NO
BUCK2 - VSYS2 YES NO
BUCK3 VDD VSYS YES YES
BUCK4 3V3 VSYS YES YES
LDO1 - 3V3 YES NO
LDO2 2V8 3V3 NO YES
LDO3 - - YES NO
LDO4 - VSYS YES NO
LDO5 VDD_SD 3V3 NO YES
LDO6 1V8 3V3 NO YES
PWR_USB_SW VBUS_OTG - NO YES
PWR_SW VBUS_SW - NO YES
DDR_REF - VSYS2 YES NO
BOOST - VSYS YES NO
In addition to the input power supplies of the PMIC, other power domains of the SOM must also be set
externally. This allows power management flexibility so you can adapt the input voltage of the
different interfaces. The following table lists the input power rails that must be powered externally to
the SOM together with the devices/power domains they power:
Input
rail
Internally
connected to Description
VCC_
LICELL
STM32MP1
CPU, VBAT
Support for RTC, backup registers, RAM retention and backup SRAM on
the CPU. RTC functionality is by default supported by the MCA.
OTG_
VBUS
STM32MP1
CPU, OTG_
VBUS

About the ConnectCore MP15 Power interfaces
ConnectCore MP15 System-on-Module 10
Reference power architecture scheme
The following diagram represents the power architecture of the ConnectCore MP15 module in a
typicalapplication:
Electrical characteristics
Input power rails
The following table lists the electrical specifications of all input power rails for the ConnectCore MP15:
Device SOM power rail Input voltage (V)
Minimum Typical Maximum
PMIC VSYS 2.8 - 5.5
VSYS2 2.8 - 5.5

About the ConnectCore MP15 Power interfaces
ConnectCore MP15 System-on-Module 11
Device SOM power rail Input voltage (V)
Minimum Typical Maximum
CPU VCC_LICELL 1.2 - 3.6
OTG_VBUS Vss-0.31- 6.01
1Absolute maximum ratings.

About the ConnectCore MP15 Power interfaces ConnectCore MP15 System-on-Module 12
Output power rails
The following table lists the electrical specifications of all output power rails for the ConnectCore MP15:
SOM power
rail
Used internally in the
SOM
Output voltage
Accuracy
(%) Continuous output current
(mA)1
Turn-on time
(us)
Turn-off time
(ms)
Min Typ Max Min Max Typ Max Max
3V3 YES - 3.3 - -4 4 2000 235 400 1.5
VDD YES - 3.3 - -4 4 500 235 400 1.5
VDD_SD NO 1.7 - 3.9 -2 2 350 160 - 3
LDO2_2V8 NO 1.7 - 3.3 -2 2 350 160 - 3
LDO6_1V8 NO 0.9 - 3.3 -2 2 150 100 - 3
VBUS_OTG NO - - - - - 500 3000 - 3
VBUS_SW NO - - - - - 1000 3000 - 3
Note Some of the electrical characteristics may depend on the configuration and operation mode of the different regulators. For a complete description
of the electrical characteristics of the different output power rails (PMIC regulators), see the STPMIC1 datasheet.
1The maximum output current involves both external and internal circuitry. For those regulators that are used internally in the SOM, the current
available outside will be lower.

Bootstrap
The ConnectCore MP15 module can be configured to boot from different devices and interfaces as
determined by the boot ROM. The configuration of the booting process of the CPU is done through the
BOOT pin and OTP bytes.
BOOT2 BOOT1 BOOT0 Boot mode
0 0 0 UART and USB port 1
0 0 1 Serial NOR Flash
0 1 0 eMMC (default SDMMC2)
0 1 1 NAND Flash
1 0 0 Reserved
1 0 1 SD card (default SDMMC1)
1 1 0 UART and USB port 2
1 1 1 Serial NAND Flash
Wireless interfaces
The ConnectCore MP15 System-on-module combines a wireless local area network (WLAN) and
Bluetooth dual solution to support IEEE802.11 a/b/g/n/ac WLAN standards and Bluetooth 5, enabling
seamless integration of WLAN/Bluetooth and Low Energy technology. Digi also offers a non-wireless
variant of the ConnectCore MP15 module.
The following sections include specifications for the wireless interfaces available on the ConnectCore
MP15 module.
WLAN IEEE 802.11a/b/g/n/ac
The following sections specify the performance of the WLAN IEEE 802.11a/b/g/n/ac interface on the
ConnectCore MP15 module.
Modulation and data rates
The following tables list modulation values for the ConnectCore MP15 module, which supports the
following WLAN standards:
ConnectCore MP15 System-on-Module 13

About the ConnectCore MP15 Wireless interfaces
ConnectCore MP15 System-on-Module 14
Mode Modulation & coding Rate
802.11b
DBPSK 1 Mbps
DQPSK 2 Mbps
CCK 5.5 Mbps
CCK 11 Mbps
802.11ga
BPSK-1/2 6 Mbps
BPSK-3/4 9 Mbps
QPSK-1/2 12 Mbps
QPSK-3/4 18 Mbps
16QAM-1/2 24 Mbps
16QAM-3/4 36 Mbps
64QAM-2/3 48 Mbps
64QAM-3/4 54 Mbps
802.11n
BPSK-1/2 MCS0
QPSK-1/2 MCS1
QPSK-3/4 MCS2
16QAM-1/2 MCS3
16QAM-3/4 MCS4
64QAM-2/3 MCS5
64QAM-3/4 MCS6
64QAM-5/6 MCS7
802.11ac
BPSK-1/2 MCS0
QPSK-1/2 MCS1
QPSK-3/4 MCS2
16QAM-1/2 MCS3
16QAM-3/4 MCS4
64QAM-2/3 MCS5
64QAM-3/4 MCS6
64QAM-5/6 MCS7
256QAM-3/4 MCS8
256QAM-5/6 MCS9

About the ConnectCore MP15 Wireless interfaces
ConnectCore MP15 System-on-Module 15
Data rate (Mbps) - Non Short Guard Interval (Non-SGI)
Data rate
(Mbps) 802.11b 802.11ga 802.11n 802.11ac
Modulation
DBPSK CCK
BPSK-
1/2
64QAM-
3/4
BPSK-
1/2
64QAM-
5/6
BPSK-
1/2
64QAM-
5/6
256QAM-
5/6
1 Mbps
11
Mbps
6
Mbps
54
Mbps MCS0 MCS7 MCS0 MCS7 MCS9
2.4
GHz
HT20 1 11 6 54 6.5 65 6.5 65
HT40 13.5 135 13.5 135 180
5 GHz HT20 6 54 6.5 65 6.5 65
HT40 13.5 135 13.5 135 180
HT80 29.3 292.5 390
Data rate (Mbps) - Short Guard Interval (SGI)
Mode 802.11b 802.11ga 802.11n 802.11ac
Modulation
DBPSK CCK
BPSK-
1/2
64QAM-
3/4
BPSK-
1/2
64QAM-
5/6
BPSK-
1/2
64QAM-
5/6
256QAM-
5/6
1 Mbps
11
Mbps
6
Mbps
54
Mbps MCS0 MCS7 MCS0 MCS7 MCS9
2.4
GHz
HT20 1 11 6 54 7.2 72.2 7.2 72.2
HT40 15 150 15 150 200
5 GHz HT20 6 54 7.2 72.2 7.2 72.2
HT40 15 150 15 150 200
HT80 32.5 325 433.3
RF channels
The ConnectCore MP15 module supports the following frequency bands:
RF
band
Ch.
BW
Ch.
spacing Channel number (Center freq. MHz)
2.4
GHz
20
MHz 5 MHz 1(2412), 2(2417), 3(2422), 4(2427), 5(2432), 6(2437), 7(2442), 8(2447), 9 (2452), 10(2457), 11(2462), 12(2467), 13(2472), 14(2484)
40
MHz 5 MHz 3(2422), 11(2462)

About the ConnectCore MP15 Wireless interfaces
ConnectCore MP15 System-on-Module 16
RF
band
Ch.
BW
Ch.
spacing Channel number (Center freq. MHz)
5 GHz
20
MHz 20 MHz
36(5180), 40(5200), 44(5220), 48(5240), 52(5260), 56(5280), 60(5300), 64
(5320), 100(5500), 104(5520), 108(5540), 112(5560), 116(5580), 120
(5600), 124(5620), 128(5640), 132(5660), 136(5680), 140(5700), 144
(5720), 149(5745), 153(5765), 157(5785), 161(5805), 165(5825)
40
MHz 40 MHz 38(5190), 46(5230), 54(5270), 62(5310), 102(5510), 110(5550), 118(5590), 126(5630), 134(5670), 142(5710), 151(5755), 159(5795)
80
MHz 80 MHz 42(5210), 58(5290), 106(5530), 122(5610), 138(5690), 155(5775)
Note Dependent upon regulatory bodies.
2.4 GHz
2.4 GHz
band
channel
#
Center frequency (MHz) EUROPE
(ETSI)
NORTH
AMERICA
(FCC)
JAPAN
1 2412 ✔ ✔ ✔
2 2417 ✔ ✔ ✔
3 2422 ✔ ✔ ✔
4 2427 ✔ ✔ ✔
5 2432 ✔ ✔ ✔
6 2437 ✔ ✔ ✔
7 2442 ✔ ✔ ✔
8 2447 ✔ ✔ ✔
9 2452 ✔ ✔ ✔
10 2457 ✔ ✔ ✔
11 2462 ✔ ✔ ✔
12 2467 ✔No ✔
13 2472 ✔No ✔
14 2484 No No 802.11b
only

About the ConnectCore MP15 Wireless interfaces
ConnectCore MP15 System-on-Module 17
5 GHz
5 GHz band
channel # Center frequency (MHz) EUROPE (ETSI) NORTH AMERICA (FCC) JAPAN
36 5180 Indoors ✔ ✔
40 5200 Indoors ✔ ✔
44 5220 Indoors ✔ ✔
48 5240 Indoors ✔ ✔
52 5260 Indoors / DFS / TPC DFS DFS / TPC
56 5280 Indoors / DFS / TPC DFS DFS / TPC
60 5300 Indoors / DFS / TPC DFS DFS / TPC
64 5320 Indoors / DFS / TPC DFS DFS / TPC
100 5500 DFS / TPC DFS DFS / TPC
104 5520 DFS / TPC DFS DFS / TPC
108 5540 DFS / TPC DFS DFS / TPC
112 5560 DFS / TPC DFS DFS / TPC
116 5580 DFS / TPC DFS DFS / TPC
120 5600 DFS / TPC DFS DFS / TPC
124 5620 DFS / TPC DFS DFS / TPC
128 5640 DFS / TPC DFS DFS / TPC
132 5660 DFS / TPC DFS DFS / TPC
136 5680 DFS / TPC DFS DFS / TPC
140 5700 DFS / TPC DFS DFS / TPC
149 5745 SRD ✔No Access
153 5765 SRD ✔No Access
157 5785 SRD ✔No Access
161 5805 SRD ✔No Access
165 5825 SRD ✔No Access
Note
DFS = Dynamic Frequency Selection
TPC = Transmit Power Control
SRD = Short Range Devices 25 mW max power

About the ConnectCore MP15 Wireless interfaces
ConnectCore MP15 System-on-Module 18
Transmit power
The following table lists nominal transmit power values for the ConnectCore MP15 module based on
Murata LBEE5PK2AE-564 specification.
RF band Standard Output power (dBm)
2.4 GHz
802.11b 17 (1Mbps) - 17 (11Mbps)
802.11g 16 (6Mbps) - 16 (54Mbps)
802.11n 16 (MCS0) - 14 (MCS7)
5 GHz
802.11a 13 (6Mbps) - 14 (54Mbps)
802.11n (HT20) 16 (MCS0) - 14 (MCS7)
802.11ac (VHT20) 16 (MCS0) - 13 (MCS8)
802.11n (HT40) 14 (MCS0) - 13 (MCS7)
802.11ac (VHT40) 14 (MCS0) - 11 (MCS9)
802.11ac (VHT80) 13 (MCS0) - 12 (MCS9)
Antenna ports
The ConnectCore MP15 module has one antenna port on the module via a dedicated U.FL connector.
The antenna port supports WLAN and Bluetooth functionality.
Bluetooth
The ConnectCore MP15 module supports both Bluetooth and Bluetooth Low Energy protocols:
nBluetooth 5 with all Bluetooth 4.2 optional features. Bluetooth class 1 and class 2 transmitter
operation.
nIntegrated WLAN-Bluetooth coexistence.

Module pinout External signals and pin multiplexing
ConnectCore MP15 System-on-Module 19
Module pinout
The ConnectCore MP15 module has a mixed pad structure. The module provides 245 LGA pins, 76 of
them connected to the peripheral castellated pads. The general layout can be found on the following
diagram:
White cells: LGA pads
Orange cells: castellated pads
Note Pad A1 is unconnected. This pad is meant for module-orientation purposes; its shape is square,
whereas all other pads are circular. Pad A1 should not be soldered down to a corresponding pad on
the carrier board.
External signals and pin multiplexing
The following tables provide the pinout information of the ConnectCore MP15 module. For additional
information related to the signals listed in the table, refer to the STMicroelectronics STM32MP1
technical documentation.

Module pinout External signals and pin multiplexing
ConnectCore MP15 System-on-Module 20
Note The Digi ConnectCore Smart IOmux tool can dramatically simplify pin configuration and
resolution. You can enter the list of interfaces required by your project and use the Smart IOmux
graphical interface to mock up configuration options, resulting in full pin assignment and device tree
snippets that match your desired functionality. See the Smart IOmux User Guide for more information
and download instructions.
The microprocessor used on this module, like all CMOS devices, can be driven into a latch-
up condition if any I/O pin is driven outside of its associated power rail. Care must be taken
to:
nNever drive an I/O pin beyond its positive rail or below ground.
nNever drive an I/O pin from an external power source during the power-on or reset
sequences.
nNever hot-swap the module or interrupt its ground connection to external circuitry.
Latch-up is a condition that can cause excessive current draw and result in excessive
heating of the microprocessor or its power supplies. This excessive heating can
permanently damage the microprocessor and/or its supporting components.
When you use an external supply on the carrier board supporting the ConnectCore MP15
module, make sure this supply is NOT back driving STM32MP1 I/Os while their power rails
are not enabled. For example, this can happen when an external 3.3V supply is available on
the carrier board and this supply powers components driven by STM32MP1 I/Os. In this
case, Digi recommends you enable the external power supply after internal 3.3V is enabled,
or add the necessary protection circuitry to avoid back voltage (leakage).