Description
The GMS81C7008/7016 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:16K/ 8K bytes of mask type ROM or 16K bytes OTP ROM, 448 bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10 bit high speed PWM Output, programmable buzzer driving port, 8-bit basic interval timer, watch dog timer, serial peripheral interface, on chip oscillator and clock circuitry. They also come with 4com/24seg LCD driver. In addition, it support power saving mode to reduce power consumption.

Features
• 8K/16K Bytes On-chip Programmable ROM
• 448 Bytes of On-chip Data RAM (Included stack area and 27 nibbles LCD Display RAM)
• Instruction Execution Time 1µs 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)
• Two channel 10-bit High Speed PWM Output
• Three External Interrupt input ports
• One Programmable 6-bit Buzzer Driving port
    - 500Hz ~ 250kHz@4MHz
• 49 I/O Ports
• Eight channel 8-bit A/D converter
• One 8-bit Serial Communication Interface
• LCD Display/ Controller
    - Static Mode (27SEG x 1COM, Static)
    - 1/2 Duty Mode (26SEG x 2COM, 1/2 or 1/3 Bias)
    - 1/3 Duty Mode (25SEG x 3COM, 1/3 Bias)
    - 1/4 Duty Mode (24SEG x 4COM, 1/3 Bias)
    - Internal Built-in Resistor Circuit for Bias
• Thirteen Interrupt sources
    - Basic Interval Timer: 1
    - External input: 3
    - Timer/Event counter: 4
    - ADC: 1
    - Serial Interface: 1
    - WT:1
    - WDT: 1
    - Key Scan: 1
• Main Clock Oscillation (1.0~4.5MHz)
    - Crystal
    - Ceramic Resonator
    - External R Oscillator (Built-in Capacitor)
• Sub Clock Oscillation
    - 32.768kHz Crystal Oscillator
• Power Saving Operation Mode
    - Main / Sub Active mode changeable
    - 2/8/16/64 divided system clock selectable
• Power Down Mode
    - STOP mode
    - SLEEP mode
    - Sub active Mode
• 2.7V to 5.5V Wide Operating Voltage Range
• Noise Immunity Circuit for EMS
    - Power fail processor
    - Built in Noise filter
• 64SDIP, 64LQFP package types
• Available 16K bytes OTP version