User's Guide

USER GUIDE ITRON CONFIDENTIAL 13
Pin
Number
Castellation PURPOSE Maps to FUNCTIONALITY
36
CST12
COMM USB VBUS/USART1 TX
PA9
32
CST13
COMM USB ID/USART1 RX
PA10
38
CST14
COMM USB DM
PA11
39
CST15
COMM USB DP
PA12
41
CST16
COMM USB OE#JTMS1
PA13
1
CST17
COMM WAKE OUT
PB5
2
CST18
COMM I2C1 SCL
PB6
4
CST19
COMM I2C1 SDA
PB7
9
CST20
COMM SP13 SS#
PB8
47
CST21
COMM SPI3 SCK
PC10
48
CST22
COMM SPI3 MISO
PC11
51
CST23
COMM SP1I3 MOSI
PC12
11
CST24
COMM_WAKE_IN
PC13
7
CST25
32.768khZ MEMS OSC OUTPUT
PC14/OSC32IN
10
CST26
GND
12
CST27
GND
14
CST28
GND
18
CST29
COMMS PROCESSOR RESET
NRST
ACTIVE LOW RESET
16
CST30
GND
20
CST31
GND
23
CST32
GND
24
CST33
GND
25
CST34
GND
26
CST35
GND
27
CST37
GND
28
CST38
GND
19
CST39
COMM USART3 TX
PC4
21
CST40
COMM USART3 RX
PC5
44
CST41
JTCK1
PA14
45
CST42
JTDI1
PA15
42
CST43
JTDO1
PB3
49
CST44
LED1
PD2
29
CST45
GND
30
CST46
GND
31
CST48
GND
33
CST49
GND
35
CST50
GND
37
CST51
GND