STM32 Connectors
2.2.2 JD2 Headers
The JD2 headers are among the three 2×25 headers on the bottom of the board. These headers are used
when connecting to either the STM32F4DISCOVERY or STM3240G-EVAL. When connecting to the
DISCOVERY board, the JD1 and JD2 connect to the P1 and P2 headers, respectively. When connecting
to the EVAL board, the JE3 and JD2 connect to the CN3 and CN4 headers, respectively.
Table 2-4. Table of Pins JD2
CC256XEM-STADAPT
STM32F4DISCOVERY
STM3240G-EVAL
Pin
Function
Pin
MCU Pin
Function
Pin
MCU Pin
Function
JD2.1
EVAL_DAC_DIN
P2.2
GND
X
CN4.40
PI3
I2S2_SD/ GPIO
JD2.3
X
P2.4
5V
X
CN4.38
PA14
X
JD2.5
DISCOVERY_VCC
P2.6
3V
VBAT
CN4.36
PC10
X
JD2.7
EVAL_UART5_TX
P2.8
PH1
X
CN4.34
PC12
UART5_TX
JD2.9
EVAL_UART5_RTS
P2.10
PC15
X
CN4.32
PD1
GPIO
JD2.11
X
P2.12
PC13
X
CN4.30
GND
X
JD2.13
X
P2.14
PE5
X
CN4.28
PD4
X
JD2.15
X
P2.16
PE3
X
CN4.26
PD6
X
JD2.17
X
P2.18
PE1
X
CN4.24
PG9
X
JD2.19
DISCOVERY_I2C1_ SDA
P2.20
PB9
I2C1_SDA
CN4.22
PG11
X
JD2.21
EVAL_USART6_CTS
P2.22
VDD
X
CN4.20
PG13
USART6_CTS
JD2.23
EVAL_USART6_TX
P2.24
PB7
X
CN4.18
PG14
USART6_TX
JD2.25
DISCOVERY_I2S3_ SD
P2.26
PB5
I2S3_SD
CN4.16
PB3
X
JD2.27
X
P2.28
PB3
X
CN4.14
PB5
X
JD2.29
EVAL_CP_RST
P2.30
PD6
X
CN4.12
PB7
GPIO
JD2.31
X
P2.32
PD4
X
CN4.10
GND
X
JD2.33
EVAL_I2C1_SDA
P2.34
PD2
X
CN4.8
PB9
I2C1_SDA
JD2.35
X
P2.36
PD0
X
CN4.6
PE1
X
JD2.37
X
P2.38
PC11
X
CN4.4
PI5
X
JD2.39
X
PI7
PA15
X
CN4.2
PI7
X
JD2.41
X
X
PA13
X
X
X
X
JD2.43
X
X
PA9
X
X
X
X
JD2.45
DISCOVERY_MCO
X
PC9
MCO2
X
X
X
DISCOVERY_DAC_
JD2.47
X
PC7
I2S3_MCK
X
X
X
MCLK
JD2.49
X
X
GND
X
X
X
X
JD2.2
GND
P2.1
GND
GND
CN4.39
GND
GND
JD2.4
X
P2.3
5V
X
CN4.37
PA15
X
JD2.6
X
P2.5
3V
X
CN4.35
PC11
X
JD2.8
EVAL_UART5_CTS
P2.7
PH0
X
CN4.33
PD0
GPIO
JD2.10
EVAL_UART5_RX
P2.9
PC14
X
CN4.31
PD2
USART5_RX
JD2.12
EVAL_CC_nSHUTD
P2.11
PE6
X
CN4.29
PD3
GPIO
JD2.14
X
P2.13
PE4
X
CN4.27
PD5
X
JD2.16
X
P2.15
PE2
X
CN4.25
PD7
X
JD2.18
X
P2.17
PE0
X
CN4.23
PG10
X
JD2.20
X
P2.19
PB8
X
CN4.21
PG12
X
JD2.22
X
P2.21
BOOT0
X
CN4.19
GND
X
JD2.24
DISCOVERY_I2C1_ SCL
P2.23
PB6
I2C1_SCL
CN4.17
PG15
X
DISCOVERY_
JD2.26
P2.25
PB4
I2S3ext_SD
CN4.15
PB4
X
I2S3ext_SD
JD2.28
EVAL_I2C1_SCL
P2.27
PD7
X
CN4.13
PB6
I2C1_SCL
JD2.30
X
P2.29
PD5
X
CN4.11
BOOT0
X
JD2.32
DISCOVERY_CP_ RST
P2.31
PD3
GPIO
CN4.9
PB8
X
JD2.34
X
P2.33
PD1
X
CN4.7
PE0
X
JD2.36
DISCOVERY _DAC_DIN
P2.35
PC12
I2S3_SD / GPIO
CN4.5
PI4
X
12
Hardware Description
SWRU417 – June 2015
Copyright © 2015, Texas Instruments Incorporated