ST B-L462E-CELL1 User manual

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User Manual
B-L462E-CELL1 Discovery kit for NB/M1 communication
Discovery Board
Introduction
The B-L462E-CELL1 Discovery pack (B-L462E-CELL1) is a turnkey development platform for
the IoT and cellular technology-based solutions. The pack contains a TYPE-1SE module and
a low-power Discovery mother board with antenna connector. The TYPE-1SE module
includes a STM32L462REY micro-controller and a TYPE-1SC module which is a worldwide
smallest LTE Cat NB1&M1 modem.
STMod+ and extended pins connectivity provides unlimited expansion capabilities with a large
choice of specialized add-on boards.
The B-L462E-CELL1 Discovery kit includes an ST-LINK debugger/programmer and comes
with the comprehensive STM32Cube software libraries together with packaged software
examples to seamlessly connect to cloud servers. In addition, a direct access to the Arm®
mbed Enabled™ on-line resources at Http://mbed.org is available.
Figure 1. B-L462E-CELL1 Discovery kit

Contents
Introduction................................................................................................................................ 1
1Features............................................................................................................................. 4
2Product marking................................................................................................................. 5
3System requirements......................................................................................................... 5
4Development toolchains..................................................................................................... 5
5Demonstration software..................................................................................................... 5
6Ordering information .......................................................................................................... 6
7Hardware layout and configuration.................................................................................... 7
7.1 B-L462E-CELL1 Discovery kit for IoT node layout....................................................... 8
7.2 B-L462E-CELL1 Discovery kit mechanical drawing................................................... 10
7.3 Embedded ST-LINK/V2-1........................................................................................... 11
7.3.1 Drivers.............................................................................................................. 11
7.3.2 ST-LINK/V2-1 firmware upgrade...................................................................... 11
7.4 Power supply.............................................................................................................. 12
7.5 Clock sources............................................................................................................. 14
7.6 Reset sources ............................................................................................................ 14
7.7 USB DEVICE FS........................................................................................................ 14
7.8 Quad-SPI NOR Flash memory................................................................................... 14
7.9 Virtual COM port......................................................................................................... 14
7.10 ST sensors ............................................................................................................... 14
7.10.1 Ultra-low-power 3D accelerometer and 3D magnetometer (LSM303AGR)... 14
7.10.2 260-1260 hPa absolute digital output barometer (LPS22HH) ....................... 15
7.10.3 Capacitive digital sensor for relative humidity and temperature (HTS221) ... 16
7.11 EEPROM (M24128-DFMN6TP)............................................................................... 16

7.12 OLED screen............................................................................................................ 16
7.14 Buttons and LEDs .................................................................................................... 17
7.15 I2C addresses of modules used on MB1508 ........................................................... 18
8 Connectors ........................................................................................................................... 19
8.1 SMA connector for antenna ........................................................................................ 19
8.2 SIM card slot............................................................................................................... 19
8.3 Tag connector ............................................................................................................ 20
8.4 ST-LINK select jumper............................................................................................... 21
8.5 ST-LINK debug connector.......................................................................................... 21
8.6 reserved U.FL connector............................................................................................ 22
8.7 INT pins of sensors .................................................................................................... 22
8.8 USB connector for User Device ................................................................................. 22
8.9 USB connector for ST-LINK....................................................................................... 23
8.10 USB connector for UART......................................................................................... 23
8.11 USB connector for power......................................................................................... 24
8.12 Extension pin header for MCU................................................................................. 25
8.13 Extension pin header for Modem ............................................................................. 26
8.14 3.5mm stereo headphone connector ....................................................................... 27
8.15 Socket 10X2 STMod+ .............................................................................................. 28
8.16 Jumper JP1 for IDD measurements......................................................................... 28
Appendix A B-L462E-CELL1 Discovery kit I/O assignment................................................. 29

1 Features
•TYPE-1SE module including TYPE-1SC and STM32L462REY
•STM32L462REY micro-controller featuring 512 KB of Flash memory and 160 KB of RAM
in WLCSP64 package
•TYPE-1SC modem featuring LTE Cat M1/NB1 in LGA pack
•0.96-inch 128 x 64 OLED screen with SPI interface
•64Mbytes Quad-SPI(Micron) Flash memory
•ST 16Kbyte IIC EEPROM (M24128-DFMN6TP)
•Ultra-low-power 3D accelerometer and 3D magnetometer (LSM303AGR)
•Capacitive digital sensor for relative humidity and temperature (HTS221)
•260-1260 hPa absolute digital output barometer (LPS22HH)
•3 user LEDs connected to timers
•2 push-buttons (User and reset)
•Board expansion connectors:
- SMA antenna connector
- Two 50 Pin and 2.54-mm pin pitch headers
- SIM card slot
- 3.5mm CTIA stereo headset jack including analog microphone input
- Micro-B USB connectors for power, USARTs, USB device and ST-LINK V2-1
- STMod+
- TAG10
•Flexible power-supply options: ST-LINK USB, User USB, UART USB, Power USB or 3 x
AAA battery
•On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability:
mass storage, virtual COM port and debug port
•Comprehensive free software including a variety of examples, as part of the STM32Cube
package, as well as a cloud connector software expansion, enabling direct access to
cloud servers
•Support of wide choice of Integrated Development Environments (IDEs) including IAR™,
Keil®, GCC-based IDEs, Arm® mbed Enabled™
•Arm® mbed Enabled™ (see Http://mbed.org)

2 Product marking
Evaluation tools marked as "ES" or "E" are not yet qualified and therefore they are not ready
to be used as reference design or in production. Any consequences deriving from such usage
will not be at ST charge. In no event, ST will be liable for any customer usage of these
engineering sample tools as reference design or in production.
"E" or "ES" marking examples of location:
•On the targeted STM32 that is soldered on the board (for illustration of STM32 marking,
refer to the section “Package characteristics” of the STM32 datasheet at www.st.com).
•Next to the evaluation tool ordering part number, that is stuck or silk-screen printed on the
board.
3 System requirements
•Windows® OS (7, 8 and 10), Linux® or MacOS™
•USB Type-A to Micro-B cable
4 Development toolchains
•Keil® MDK-Arm(a)
•IAR™ EWARM(a)
•GCC-based IDEs including free SW4STM32 from AC6
•Arm® mbed Enabled™ online
5 Demonstration software
The demonstration software, included in the STM32Cube package, is preloaded in the
STM32 Flash memory for easy demonstration of the device peripherals in standalone mode.
The latest versions of the demonstration source code and associated documentation can be
downloaded from the webpage.

6 Ordering information
To order the B-L462E-CELL1 Discovery kit for IoT node, refer to Table 1.
Table 1. Ordering information
Order code
Target STM32
B-L462-CELL1
STM32L462REY

7 Hardware layout and configuration
The B-L462E-CELL1 Discovery kit is designed around the TYPE-1SE module. The hardware
block diagram (see Figure 2) illustrates the connection between TYPE-1SE module and
peripherals (OLED screen, Sensors, USB FS connector, USARTs, EEPROM, Micro-SIM card
and embedded ST-LINK V2-1) and Figure 3 and Figure 4 will help you locate these features
on the actual evaluation board.
Figure 2. Hardware block diagram
1SE ModuleMCU Part Modem
Part
SWD
UART
QSPI
USB
SPI
I2C
GPIO
TIMER
SIM
UART1
UART2
RF
TAG10
STLINK V2-1
QSPI
Flash
OLED
Sensors
Tamper
Button
LEDs
Level shifter
SMA
Connector
SIM card
slot
USB-UART
Converter MicroUSB
I2C
EEPROM
MicroUSB
MicroUSB
Extension
connector CN12
Stmod+
Connector
GPIO Extension
connector CN13

7.1 B-L462E-CELL1 Discovery kit for IoT node layout
Figure 3. B-L462E-CELL1 Discovery kit (top view)
SMA connecor(CN1)
STMod+(P1)
OLED screen(U1)
Reset button(B1)
User button(B2)
Sensor interrupt
pins(CN7)
User USB(CN8)
USB UART(CN10)
USB ST-LINK(CN9)
USB PWR(CN11)
TAG10(CN3)
LSM303AGR(U7)
HTS221(U10)
LPS22HH(U6)
TYPE-1SE(U5)
ST-LINK MCU(U12)
Flash(U8)
SIM card slot(CN2)
User LED(LD1,LD2,LD3) ST-LINK COM (LD6)
Current measure
jumper(JP1)
1.8V LDO(U19)

Figure 4. B-L462E-CELL1 Discovery kit (bottom view)
EEPROM(U23)
Pins to
MCU(CN12)
Pins to
Modem(CN13)
3.3V LDO(U25)
3.6V LDO(U30)
Level shifter
(U27,U28,U29)
Battery case(BT1)

7.2 B-L462E-CELL1 Discovery kit mechanical drawing
Figure 5. B-L462E-CELL1 Discovery kit mechanical drawing