GMS81C50 Datasheet, PDF (4/99 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCONTROLLERS

HYUNDAI
GMS81C50 Series
GMS81C50 Series
CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
FOR UR (Universal Remocon) & KEYBOARD
1. OVERVIEW
1.1 Description
The GMS81C50 Series is an advanced CMOS 8-bit microcontroller with 16K/24K/32K bytes of ROM. The device is one of
GMS800 family. The LG Semicon GMS81C50 Series is a powerful microcontroller which provides a highly flexible and
cost effective solution to many UR & Keyboard applications. The GMS81C50 Series provides the following standard fea-
tures: 16K/24K/32K bytes of ROM, 448 bytes of RAM, 8-bit timer/counter, on-chip oscillator and clock circuitry. In addi-
tion, the GMS81C50 Series supports power saving modes to reduce power consumption.
1.2 Features
Device Name
GMS81C5016
GMS81C5024
GMS81C5032
• Instruction Cycle Time:
- 1us at 4MHz
• Programmable I/O pins
ROM Size
16K Bytes
24K Bytes
32K Bytes
INPUT
OUTPUT
I/O
28 PIN
3
2
21
40 PIN
3
2
33
44 PIN
3
2
33
• Operating Voltage
- 2.2 ~ 4.0 V @ 4MHz
• Timer
- Timer / Counter ......... 16 Bit * 1 ch
......... 8 Bit * 2 ch
- Basic Interval Timer ...... 8 Bit * 1 ch
RAM Size
448 Bytes
( included
256 bytes
stack memory )
Package
28 SOP
28 Skinny DIP
40 PDIP
44 PLCC
44 QFP
- Watch Dog Timer ............ 6Bit * 1ch
• 8 Interrupt sources
* Nested Interrupt control is available.
- External input: 2
- Keyscan input
- Basic Interval Timer
- Watchdog timer
- Timer : 3
• Power On Reset
• Power saving Operation Modes
- STOP
- SLEEP
• Low Voltage Detection Circuit
• Watch Dog Timer Auto Start (During 1second
after Power on Reset)
1.3 Development Tools
The GMS81C50 Series is supported by a full-featured
1