HYUNDAI MicroElectronics
HMS87C1304A/HMS87C1302A
HMS87C1304A / HMS87C1302A
CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
1. OVERVIEW
1.1 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. The HMS87C1304A
and HMS87C1302A provide 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 HMS87C1304A and HMS87C1302A supports power saving modes to
reduce power consumption.
Device name
HMS87C1304A
HMS87C1302A
EPROM Size
4K bytes
2K bytes
RAM Size
128bytes
128bytes
Operatind
Voltage
2.0 ~ 5.5V
2.0 ~ 5.5V
1.2 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
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• 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
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Package
24 PDIP or SOP
24 PDIP or SOP
Jan. 2001
Preliminary
1
Analog electronics
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