
UM0841 Connectors
Doc ID 16533 Rev 2 15/41
3.3 Daughterboard extension connectors CN4 and CN5
Two 50-pin male headers, CN4 and CN5, can connect a daughterboard or standard
wrapping board to the STM32100B-EVAL board. All GPIOs are available on these
connectors. The space between these two connectors and position of power, GND and
RESET pin is defined as a standard (which allows to develop common daughterboards for
several evaluation boards). Moreover all I/O on these connectors are pinout compatible with
the STM3210B-EVAL board (except PC14 and PC15 which do not exist on the
STM32F103VBT6). The standard width between CN4 pin1 and CN5 pin1 is 2700 mils
(68.58mm). The standard was implemented on the majority of evaluation boards. Each pin
on CN4 and CN5 can be used by a daughterboard after disconnecting it from the
corresponding function block on the STM32100B-EVAL board. Refer to Table 11 and
Table 12 for details.
Table 11. Daughterboard extension connector CN4
Pin Description Alternate function How to disconnect from function block on
STM32100B-EVAL board
1GND - -
3 PC1 MC connector pin15 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
5 PC3 MC connector pin 19 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
7 PA1 MC connector pin 33 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
9 PA3 MC connector pin 14 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
11 PA4 Audio_DAC / BNC Keep JP2 on open
13 PA6 SPI Flash& MicroSD card Remove R89
15 PC4 Potentiometer RV2 Remove R48
17 PB0 MC connector pin 27 Keep JP7 on open
19 GND - -
21 PE7 MicroSD card detect Remove card from CN11 or remove R91
23 PE9 MC connector pin 3 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
25 PE11 MC connector pin 7 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
27 PE13 MC connector pin 11 Disconnect STM32100B-EVAL evaluation board
from motor power drive board
29 PE15 MC connector pin 1 Remove R24
31 PC14 OSC32_IN Keep SB2 on close and remove R17
33 PB10 HDMI_SCL Remove R108
35 PB13 LCD_CLK -
37 PB15 LCD_MOSI -
39 GND - -