Description

The GMS81C5108 is an advanced CMOS 8-bit microcontroller with 8K bytes of ROM. The device is one of GMS800 family. The Hynix GMS81C5108 is a powerful microcontroller which provides a high flexibility and cost effective solution to many LCD applications. The GMS81C5108 provides the following standard features: 8K bytes of ROM, 192 bytes of RAM, 37 Nibbles of Display RAM, 8/16-bit timer/counter, on-chip oscillator and clock circuitry. In addition, the GMS81C5108 supports power saving modes to reduce power consumption.

Features

• 8K Bytes of On-chip Program Memory

• 192 Bytes of On-chip Data RAM

• 37 Nibbles of Display RAM

• Instruction Cycle Time:

- 1us at 4MHz (2 cycle NOP instruction)

• 24 Programmable I/O pins

• 2V to 4V Operating Range

• Dual Clock Operation

- main : 400kHz ~ 4.2MHz

- sub. : 32.768kHz

• One 8-bit Basic Interval Timer/Counter

• Key Scan Interrupt

• Two 8-bit Timer/ Counter

(It can be used one 16-bit Timer/Counter)

• Watch Timer (2Hz, 4Hz, 16Hz, 1/64Hz)

• 8-bit Serial I/O (SIO)

• One 10-bit High Speed PWM Output

• Carrier Generator for Remote Controller

• 11 Interrupt sources

- 3 External interrupts (INT0 ~ 2)

- 8 Internal interrupts (BIT, Timer × 2, WT, A/DC, SIO, REM, Keyscan)

• 6-bit Buzzer Driving port

- 500Hz ~ 250kHz (@4MHz)

• 4-channel 8-bit On-chip A/D Converter

• Power Saving Mode

- STOP, SLEEP, Sub Active mode

• LCD display/controller (LCDC)

- Static Mode (37Seg × 1Com, 1/3 Bias)

- 1/2 Duty Mode (36Seg × 2Com, 1/3 Bias)

- 1/3 Duty Mode (35Seg × 3Com, 1/3 Bias)

- 1/4 Duty Mode (34Seg × 4Com, 1/3 Bias)

• LCD Display Voltage Booster

• Supply Voltage Detector(SVD)

- 2 level detector (2.2V, 1.7V)