Daughter Board Extension Connectors (Cn6 And Cn7); Table 26. Daughter Board Extension Connector (Cn6) - ST STM32303E-EVAL User Manual

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Daughter board extension connectors (CN6 and CN7)

Two 52-pin male headers, CN6 and CN7, can be used to connect with the daughter board or
standard wrapping board to the STM32303E-EVAL evaluation board. All GPIOs are
available on them.
The space between these two connectors and the position of the power, GND and RESET
pins are defined as a standard which allows developing common daughter boards for
several evaluation boards. The standard width between CN6 pin1 and CN7 pin1 is 2700mils
(68.58 mm). This standard has been implemented on the majority of the evaluation boards.
Each pin on CN6 and CN7 can be used by a daughter board after disconnecting it from the
corresponding function block on the STM32303E-EVAL evaluation board. For more details,
see Table 26 and Table 27.

Table 26. Daughter board extension connector (CN6)

Pin Description Alternative function
1 GND
3 PC7 MC2_PWM_2H
5 PC9 I2S_CKIN
7 PA10 I2C2_SDA
9 PA11 USB_DM
11 PC14 OSC32_IN
13 PA13 TMS/ SWDAT
15 PC15 OSC32_OUT
17 PA15 JTDI
19 GND
21 PD0 CAN_RX
23 PD2 MC1_MC2_PFC_SD
25 PD4 MC1_EnB
27 PD6 JOY_RIGHT
29 PD7 MC1_EnIndex/ E2P_CS
31 PB4 TRST
33 PB6 MC2_EnA
MC2_EnIndex/
35 PB8
USB_disconnect
37 PE0 LCD_CS
39 GND
MC1_MC2_PFCpwm/
41 PE3
TRACE_D0
MC1_DissipativeBrake /
43 PE5
TRACE_D2
How to disconnect with function block on
-
Disconnect CN4
Remove R247
Keep JP5 open
Remove R266
Remove R196, Close SB12
Disconnect CN9, CN10
Remove R197, Close SB13
Disconnect CN9, CN10
-
Remove R124
Remove R153, R165
Remove C12, Disconnect CN2
Remove R12
Remove R57, R58
Disconnect CN9, CN10
Remove C35, Keep JP7 open, Disconnect CN4
Remove R17, R18
Remove R250
-
Remove R3, R4
Remove R7, R8
DocID026738 Rev 1
UM1807
STM32303E-EVAL board
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