UM2264
Hardware description
DocID030868 Rev 1
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Table 1: STEVAL-IDB007V1M board component descriptions
Region
Description
A
SPBTLE-1S module
C
Micro USB connector for power supply and I/O
O
JTAG connector
M
RESET button
N
two USER buttons
H
LPS25HB MEMS pressure sensor with embedded temperature
I
LSM6DS3 3D digital accelerometer and 3D digital gyroscope
G
PWR LED
P
three user LEDs
back of the
PCB
battery holder for two AAA batteries
J, L
Two rows of Arduino-compliant connectors
Q
STM32L151CBU6 48-pin microcontroller (USB to serial bridge for I/O channel to PC
communication)
R
ST2378E level translator to adapt voltage level between STM32 and SPBTLE-1S
Notes:
(1)
STM32 is not intended to be programmed by users
2.2
SPBTLE-1S module connections
The SPBTLE-1S module, containing the very low power Bluetooth low energy (BLE) single-
mode system-on-chip (
Figure 2: "STEVAL-IDB007V1M board components"
– region A) has
160 KB, 256 KB of Flash, 24 KB of RAM, a 32-bit core ARM
®
Cortex
®
-M0 processor and
several peripherals (ADC, GPIOs, I²C, SPI, Timers, UART, WDG and RTC).
The microcontroller is connected to various components such as buttons, LEDs and
sensors. The following table describes the microcontroller pin functions.
Table 2: SPBTLE-1S module pin description with board functions
Pin
name
Pin
no.
Board function
LED
Micro
Button
Pressure
sensor
3D
accelerometer
and
gyroscope
JTAG
Arduino connectors
CN1
CN2
CN3
CN4
DIO10
13
JTMS-
SWTDIO
DIO9
12
JTCK-
SWTCK
DIO8
10
TXD
(PA2)
pin 1
IO8
pin 2
TX