Connectors UM1855
62/100 DocID027351 Rev 3
3.4 Extension connectors CN6 and CN7
45 PB3 45 PE3
47 PB1 47 PA1
Table 33. CN11 and CN14 daughterboard connectors (continued)
CN11 CN14
Odd pin MCU port Odd pin MCU port
Table 34. Daughterboard extension connector CN6
Pin Description
Alternative
Functions
How to disconnect Alternative functions to
use on the extension connector
1GND - -
3PG6
CODEC_INT,
MC_ICL_Shutout
Remove R35, Open SB5
5 PA13 TMS/SWDIO
Don’t use Trace connector CN12 and JTAG
connector CN15
7 PA12 USBOTG_DP Remove R4
9 PG8 LPUART_RX_3V3 Remove R158, R188
11 GND - -
13 PG2 A12
Remove R18 to deselect SRAM U2
Remove R43 to deselect Flash memory U5
15 PD3 DFSDM_DATIN1 Remove R23
17 PD0 D2
Remove R18 to deselect SRAM U2
Remove R43 to deselect Flash memory U5
19 PD5 FMC_NWE
Can not be disconnected from SRAM and Flash
memory, but is an input for SRAM and Flash
memory
21 PG10 LCD_NE3
Can not be disconnected from TFT LCD level
shifters U21 and U22, but is an input for TFT
LCD.
23 PD7 FMC_NE1 Remove R18
25 PF0 A0
Remove R18 to deselect SRAM U2
Remove R43 to deselect Flash memory U5
27 PG11 USART1_CTS_3V3 Remove R93
29 PG13 I2C_SDA Remove R58
31 PG12 USART1_RTS Remove R116
33 PG14 I2C_SCL Remove R61
35 PG15 IOExpander_INT Remove R228
37 PF4 A4
Remove R18 to deselect SRAM U2
Remove R43 to deselect Flash memory U5
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