microOLED Display Modules

uOLED-160G2

Page 4 of 20

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3. Pin Configuration and Summary

I = Input, O = Output, P = Power

Interface/Programming Header

Pin

Symbol

I/O

Description

1

+5V

P

Main Voltage Supply +ve input pin. Reverse polarity protected. Range is 4.0V to

5.5V, nominal 5.0V.

2

5V OUT

P

5V OUT provides approximately 4.7 V through a protection diode.

3

TX

O

Asynchronous Serial Transmit pin. Output data is at TTL voltage levels. Connect

this pin to external device Serial Receive (Rx) signal. This pin is tolerant up to 5.0V

levels.

4

IO2

I/O

General purpose IO2 pin. See section 4.2 for more detail.

5

RX

I

Asynchronous Serial Receive pin. Connect this pin to external device Serial

Transmit (Tx) signal. This pin is tolerant up to 5.0V levels.

6

IO1

I/O

General purpose IO1 pin. See section 4.2 for more detail.

7

GND

P

Supply Ground.

8

GND

P

Supply Ground.

9

RESET

I

Master Reset signal. Internally pulled up to 3.3V via a 4.7K resistor. An active Low

pulse greater than 2.0μs will reset the module. If the module needs to be reset

externally, only use open collector type circuits. This pin is not driven low by any

internal conditions. The host should control this pin via one of its port pins using

an open collector/drain arrangement.

10

3.3V

P

Regulated 3.3 Volts output, maximum available current 50mA to power external

circuitry.

+5V

(1)

TX

(3)

RX

(5)

GND

(7)

RES

(9)

(4)

IO2

(2)

5V OUT

(6)

IO1

(8)

GND

(10)

3.3V

+5V

(1)

TX

(3)

RX

(5)

GND

(7)

RES

(9)