GMS81C1102 / GMS81C1202
GMS81C1102 / GMS81C1202
CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
1. OVERVIEW
1.1 Description
The GMS81C1102 and GMS81C1202 are an advanced CMOS 8-bit microcontroller with 2K bytes of ROM. The Hynix
GMS81C1102 and GMS81C1202 are a powerful microcontroller which provides a highly flexible and cost effective solution
to many small applications. The GMS81C1102 and GMS81C1202 provide the following standard features: 2K bytes of
ROM, 128 bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10-bit High Speed PWM Output, Programmable Buzzer
Driving Port (GMS81C1202 only), on-chip oscillator and clock circuitry. In addition, the GMS81C1102 and GMS81C1202
support power saving modes to reduce power consumption.
This document is only explained for the base of GMS81C1202, the eliminated functions are same as below.
Device name
GMS81C1102
GMS81C1202
GMS87C1102
GMS87C1202
ROM Size
2K bytes
2K bytes
2K bytes(OTP)
2K bytes(OTP)
RAM Size
128 bytes
128 bytes
128 bytes
128 bytes
I/O
11
15
11
15
BUZ
NO
YES
NO
YES
INT1
NO
YES
NO
YES
Package
16DIP/SOP
20DIP/SOP
16DIP/SOP
20DIP/SOP
1.2 Features
• 2K bytes On-chip Program Memory
• 128 Bytes of On-Chip Data RAM
• Minimum Instruction execution time:
- 500ns at 8MHz (2cycle NOP Instruction)
• 2.2V to 6.0V Wide Operating Range
• Basic Interval Timer
• Two 8-Bit Timer/ Counters
• 10-Bit High Speed PWM Output
• Two external interrupt ports
(GMS81C1102 has one external interrupt port)
• One Programmable Buzzer Driving port
(GMS81C1202 only)
• 15 Programmable I/O Lines
(GMS81C1102 has 11 programmable I/O lines)
• Seven Interrupt Sources
(GMS81C1102 has Six interrupt sources)
• 8-Channel 8-Bit On-Chip Analog to Digital Con-
verter
• Watch dog timer
• Oscillation :
- Crystal
- Ceramic Resonator
- External Oscillator
- RC Oscillation
• Power Down Mode
- STOP mode
- Wake-up Timer mode
- RC-WDT mode
• Power Fail Processor
( Noise Immunity Circuit )
1.3 Development Tools
The GMS800 family is supported by a full-featured macro
assembler, an in-circuit emulators CHOICE-Dr.™, and
add-on board type OTP writer Dr.Writer™ .
The availability of OTP devices is especially useful for
customers expecting frequent code changes and updates.
The OTP devices, packaged in plastic packages, permit the
user to program them once.
In Circuit Emulator
Assembler
OTP Writer
CHOICE-Dr.
Hynix Semiconductor
Macro Assembler
Dr.Writer
Jan. 2002 ver 2.0
1
HYNIX [ HYNIX SEMICONDUCTOR ]
