GMS81C7208/7216
FEB. 2005 Ver 1.04
1
GMS81C7208/16
CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
WITH LCD DRIVER & A/D CONVERTER
1. OVERVIEW
1.1 Description
The GMS81C7208/7216 is advanced CMOS 8-bit microcontrollers with 8K/16K bytes of ROM. There are a powerful microcontroller
which provides a highly flexible and cost effective solution to many LCD applications. These provide the following standard features:8K/
16K bytes of mask type ROM or 16K bytes OTP ROM, 448 bytes of RAM, 8-bit Timer/Counter, 8-bit A/D converter, programmable buzz-
er driving port, 8-bit basic interval timer, watch dog timer, serial peripheral interface, on chip oscillator and clock circuitry. They also come
with 4com/17seg LCD driver. In addition, it support power saving mode to reduce power consumption.
1.2 Features
8K/16K Bytes On-chip Programmable ROM
448 Bytes of On-chip Data RAM
(Included Stack Area and 27 Nibbles LCD Display
RAM)
Minimum Instruction Execution Time
1
μ
s at 4MHz (2cycle NOP Instruction)
One 8-bit Basic Interval Timer
One Watch Timer
One Watchdog Timer
Four 8-bit Timer/Event Counter
(or Two 16-bit Timer/Event Counter)
Three External Interrupt Input Ports
One Programmable 6-bit Buzzer Driving Port
- 500Hz ~ 250kHz@4MHz
29 I/O Ports
Three Channel 8-bit A/D Converter
One 8-bit Serial Communication Interface
LCD Display/ Controller
- Static Mode (20SEG x 1COM, Static)
- 1/2 Duty Mode (19SEG x 2COM, 1/2 or 1/3 Bias)
- 1/3 Duty Mode (18SEG x 3COM, 1/3 Bias)
- 1/4 Duty Mode (17SEG x 4COM, 1/3 Bias)
- Internal Built-in Resistor Circuit for Bias
Twelve Interrupt Sources
- Basic Interval Timer: 1
- External Input: 3
- Timer/Event Counter: 4
- ADC: 1
- Serial Interface: 1
- WT:1
- WDT: 1
Main Clock Oscillation (1.0~4.5MHz)
- Crystal
- Ceramic Resonator
- External R Oscillator (Built-in Capacitor)
Power Saving Operation Mode
- 2/8/16/64 Divided System Clock Selectable
Power Down Mode
- STOP Mode
- SLEEP Mode
Wide Temperature Range
- Industrial : -40°C ~ + 85°C
2.7V to 5.5V Wide Operating Voltage Range
Noise Immunity Circuit for EMS
- Power Fail Processor
- Built-in Noise Filter
44MQFP, 44LQFP Package Types
Available 16K Bytes OTP Version
Device Name
ROM Size
RAM Size
I/O
OTP
Package
GMS81C7208
8K bytes
448 bytes
29
GMS87C7216
44MQFP, 44LQFP
GMS81C7216
16K bytes
448 bytes
29