Pin #

Function

Description

1

GND

System ground.

2

VCC

Positive power input, 3.3V nominal, ±5%.

3

CS

Chip select, active LOW (input^*).

4

RX

UART, receive line (input^*).

5

DI

SPI port, data in (input^*, must be connected to DO line of the Tibbo host device).

6

TX

UART, transmit line (output^*).

7

RST

Reset, active LOW (input^*).

8

N.C.

No connection.

9

DO

SPI port, data out (output^*, must be connected to DI line of Tibbo host device).

10

CLK

SPI port, clock (input^*).