ST 32F412GDISCOVERY, User Manual

Page: 26 / 40

Hardware layout and configuration UM2032
26/40 UM2032 Rev 3
5.16 Extension connectors P1 and P2
The extension connectors consist in male pin headers P1 and P2 (not soldered by default).
They provide access to the following IPs of the STM32F412ZGT6:
•
SPI
•
I
2
C with SMBA and FM+ (1 MHz speed)
•
Full USART (Rx, Tx, RTS, CTS)
•
CAN
•
ADC inputs
•
TIMERs channels
•
I
2
S full duplex with SD and extSD alternate functions.
•
DFSDM input for stereo PDM digital microphones
Most of the ports connected to the extension connectors P1 and P2 are the same for the
32F401CDISCOVERY and 32F411EDISCOVERY Discovery kits, to maximize the
compatibility with the previous designs. In
Table 8 , Table 9 and in the 32F412GDISCOVERY
schematics (see on www.st.com ), the pin numbers corresponding to these ports, are
annotated with the star symbol: “*”.
In Table 8 , Table 9 and in the 32F412GDISCOVERY schematics (see on www.st.com ) the
pins belonging to the extension connectors P1 and P2 annotated with a letter, are shared
with a peripheral of the 32F412GDISCOVERY (for example, S means that the port PC9
corresponding to pin 46 is also used for microSD™, see
Table 9 ).
Table 8. Pin assignment for the extension connector P1
P1 odd pins P1 even pins
Pin No. Name Note Pin No. Name Note
1 GND * 2 GND *
3 VDD_MCU * 4 VDD_MCU *
5 GND * 6 NRST *
7 PC1 *A 8 PC0 *
9 PC3 *A 10 PC2 *D
11 PA1 *A 12 - -
13 PA3 *V 14 PA2 *V
15 PA5 *A 16 PA4 *C
17 PA7 *A 18 PA6 *A
19 PC5 *A 20 PC4 *A
21 PB1 *D 22 PB0 *A
23 GND * 24 PF2 -
25 PF3 A 26 - -
27 PF10 A 28 PF11 -
29 - - 30 PF13 -
31 PG2 C 32 - -