Raspberry Pi

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Tommy​（留言 | 貢獻）2026年8月21日 (五) 13:54的修訂 （Convert heading-links to a Related projects list; fix MAX7219 and drop non-existent PN532）
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GPIO connector

RPi A+,B+ GPIO J8 40-pin pinout. [1] Models A and B have only the first 26 pins.

GPIO# 2nd fun pin# pin# 2nd fun GPIO#
- +3V3 1 2 +5V -
GPIO2 SDA1 (I2C) 3 4 +5V -
GPIO3 SCL1 (I2C) 5 6 GND -
GPIO4 GCLK 7 8 TXD0 (UART) GPIO14
- GND 9 10 RXD0 (UART) GPIO15
GPIO17 GEN0 11 12 GEN1 GPIO18
GPIO27 GEN2 13 14 GND -
GPIO22 GEN3 15 16 GEN4 GPIO23
- +3V3 17 18 GEN5 GPIO24
GPIO10 MOSI (SPI) 19 20 GND -
GPIO9 MISO (SPI) 21 22 GEN6 GPIO25
GPIO11 SCLK (SPI) 23 24 CE0_N (SPI) GPIO8
- GND 25 26 CE1_N (SPI) GPIO7
(Models A and B stop here)
EEPROM ID_SD 27 28 ID_SC EEPROM
GPIO5 - 29 30 GND -
GPIO6 - 31 32 - GPIO12
GPIO13 - 33 34 GND -
GPIO19 - 35 36 - GPIO16
GPIO26 - 37 38 - GPIO20
- GND 39 40 - GPIO21

Model B rev 2 also has a pad P6 of 8 pins offering access to an additional 4 GPIO connections. [2]

Function pin# pin# Function
+5V 1 2 +3V3
GPIO_GEN7 3 4 GPIO_GEN8
GPIO_GEN9 5 6 GPIO_GEN10
GND 7 8 GND

Models A and B provide GPIO access to the ACT status LED using GPIO 16. Models A+ and B+ provide GPIO access to the ACT status LED using GPIO 47, and the Power status LED using GPIO 35.

Related projects

取自「https://tommy0804.ddns.net/index.php?title=Raspberry_Pi&oldid=586」