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HT48CA0

8-bit Microcontroller

Holtek Semiconductor 

HT48CA0

8-bit Microcontroller

Features

• Operating voltage: 2.2V~3.6V

• Ten bidirectional I/O lines

• Six schmitt trigger input lines

• One carrier output (1/2 or 1/3 duty)

• On-chip crystal and RC oscillator

• Watchdog timer

• 1K×14 program ROM

• 32×8 data RAM

• Low voltage reset function

• Halt function and wake-up feature reduce

power consumption

• 62 powerful instructions

• Up to 1µs instruction cycle with 4MHz

system clock

• All instructions in 1 or 2 machine cycles

• 14-bit table read instructions

• One-level subroutine nesting

• Bit manipulation instructions

General Description

The HT48CA0 is an 8-bit high performance

RISC-like microcontroller specifically designed

for multiple I/O product applications. The de-

vice is particularly suitable for use in products

such as remote controllers, fan/light control-

lers, washing machine controllers, scales, toys

and various subsystem controllers. A halt fea-

ture is included to reduce power consumption.

Pin Assignment

1

23rd July ’98

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