Description
The HMS87C1304A and HMS87C1302A are an advanced CMOS 8-bit microcontroller with 4K/2K bytes of EPROM. The HYUNDAI MicroElectronics HMS87C1304A and HMS87C1302A are powerful microcontroller which provides a highly flexible and cost effective solution to many small applications such as controller for battery charger.

 Features
• 4K/2K Bytes On-chip Program Memory
• 128 Bytes of On-chip Data RAM (Included stack memory)
• Instruction Cycle Time:
    - 250nS at 8MHz
• 19 Programmable I/O pins (LED direct driving can be source and sink)
• 2.0V to 5.5V Wide Operating Range
• One 8-bit A/D Converter
    - 8 channels
• One 8-bit Basic Interval Timer
• Two 8-bit Timer / Counters
• One 10-bit High Speed PWM Outputs
• Watchdog timer
• Seven Interrupt sources
    - External input: 2
    - A/D Conversion: 1
    - Timer: 4
• One Programmable Buzzer Driving port
    - 500Hz ~ 130kHz
• Oscillator Type
    - Crystal
    - Ceramic Resonator
    - RC-oscillation ( C can be omit )
• Power-On Reset
• Noise Immunity Circuit
    - Power Fail Processor
• Power Down Mode
    - STOP mode
    - Wake-up Timer mode