GPL083B1

© Generalplus Technology Inc.

Proprietary & Confidential

3

Aug. 26, 2015

Version: 1.0

24KB LOW POWER LCD CONTROLLER

1. GENERAL DESCRIPTION

GPL083B1, a special designed CMOS 8-bit microprocessor by

Generalplus, offers the best cost/performance ratio in the industry.

It combines RAM, ROM, I/Os, an interrupt controller, and an

automatic display controller/driver in a small

device.

Its

extraordinary features include the capability of operating in low

voltage range from 1.15V ~ 3.6V and also operating under low

power that is suitable for solar cell environment.

It also provides

built-in internal power switch to select two-way power sources

automatically and facilitates user applying for solar cell and battery

cooperation application.

This device is suitable for many

application fields such as low power calculator and other LCD

related products requiring either only one solar cell or battery

application, or even two-way power source.

2. FEATURES

 Built-in 8-bit high performance processor

 192-byte SRAM

 24K-byte ROM

 Built-in 225k/1800KHz RC oscillator for system operation

 Built-in 30.72kHz oscillator circuit for timebase

 Low Operating Voltage: 1.15 V

– 3.6 V

 Low Standby Current, I

 Ten general I/O pins and eight pure input pins

 LCD Matrix: fifty segments, four commons

 LCD 1/2, 1/3 bias, 1/2, 1/3, 1/4 duty

 One 16-bit time base timer

 Watchdog mode (~2 sec)

 Four interrupt sources

(T16Hz, T2Hz, 128Hz, 2KHz)

 Power Down Mode

(wakeup source: key input, T2Hz, T16Hz,T128Hz)

 Built-in power switch for two-way power source

 Built-in internal regulator at 1.5V for LCD operation

 Built-in internal regulator for system operation

 Built-in Low voltage reset to prevent system turned down at

low voltage condition.

Note1: T16Hz: 32Hz, 16Hz, 8Hz or 4Hz

Note2: T2Hz: 2Hz or 1Hz

3. BLOCK DIAGRAM

PE[7:0]

PA[1:0]

PC[7:0]

ACON

8-bit CPU

Power Switch

Internal Regulator

VLCD

Generator

LVR

24 KB

ROM

192 B

RAM

Watchdog Timer

Power Saving Control

16 -bit

Time Base Timer

4 Com * 50 Seg

LCD Drivers

Interrupt

control

RC OSC

(HF/LF)

VB

VS

VREG

CUP[1:0]

V3X, V2X,V1X

COM[3:0]

SEG[49:0]

VDDSW

PTEST