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Table of Contents

Banana Pi

Bananarama

Bananallama

The Banana Pi is a Linux compatible computer with high speed GPIO.

In appearance the Banana Pi is similar to the Raspberry Pi but the hardware is different. The Banana Pi uses the AllWinner A20 whereas the RPi uses the Broadcom BCM2835.

GPIO

The board has a Raspberry Pi compatible GPIO header with 26 pins.

                   +--CON3--+
3V3                01      02 5V
I2C-SDA2       B21 03      04 5V
I2C-SCL2       B20 05      06 GND
GPCLK     IO-7 I03 07      08 H00       UART3-TX
GND                09      10 H01       UART3-RX
UART2 RX  IO-0 I19 11      12 H02 IO-1
UART2 TX  IO-2 I18 13      14 GND
UART2 CTS IO-3 I17 15      16 H20 IO-4    CAN TX
3V3                17      18 H21 IO-5    CAN RX
SPI0 MOSI      I12 19      20 GND
SPI0 MISO      I13 21      22 I16 IO-6 UART2 RTS
SPI0 SCLK      I11 23      24 I10       SPI0 CE0
GND                25      26 I14       SPI0 CE1
                   +--------+

This is the relationship between the Banana Pi GPIO, RPi GPIO, the A20 chip I/O and the Linux sysfs interface.

Banana Pi IO Raspberry Pi GPIO A20 I/Osysfs
0 17 I19 275
1 18 H02 226
2 27 I18 274
3 22 I17 273
4 23 H20 244
5 24 H21 245
6 25 I16 272
7 4 I03 259

A ribbon cable may be used to extend the GPIOs. In this instance a female presentation will be given.

  ______________________________________________________
 /                                                     /
+-----------------------------------------------------+
| I14 I10 I16  0V H21 H20  0V  H2  H1  H0  0V  5V  5V |
|                                                     |
|                                                     |
|  0V I11 I13 I12  3V I17 I18 I19  0V  I3 B20 B21  3V | 1
+-------------------------___-------------------------+

The naming above is the port and pin of the A20 chip.

  ______________________________________________________
 /                                                     /
+-----------------------------------------------------+
| 270 266 272  0V 245 244  0V 226 225 224  0V  5V  5V |
|                                                     |
|                                                     |
|  0V 267 269 268  3V 273 274 275  0V 259  52  53  3V | 1
+-------------------------___-------------------------+

This numbering above is for sysfs.

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