Description
The HMS87C1X0XA is an advanced CMOS 8-bit microcontroller with 4K/2K bytes of EPROM. The Hynix HMS87C1X0XA is a powerful microcontroller which provide a highly flexible and cost effective solution to many small applications such as controller for battery charger. The HMS87C1X0XA provides the following standard features: 4K/2K bytes of EPROM, 128bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10-bit high speed PWM output, programmable buzzer driving port, power-on reset circuit, on-chip oscillator and clock circuitry. In addition, the HMS87C1X0XA supports power saving modes to reduce power consumption.

Features
• 4K/2K Bytes On-chip Program Memory
• 128 Bytes of On-chip Data RAM (Included stack memory)
• Instruction Cycle Time:
  - 250nS at 8MHz
• Programmable I/O pins (LED direct driving can be source and sink)
  - HMS87C1304A/1302A : 19
  - HMS87C1204A/1202A : 15
  - HMS87C1104A/1102A : 11
• 2.0V to 5.5V Wide Operating Range
• 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 ( 1 for HMS87C1104/2A )
  - A/D Conversion: 1
  - Timer: 4
• One Programmable Buzzer Driving port ( except HMS87C1104/2A )
  - 500Hz ~ 130kHz