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General Description

The HT48RA0-3/HT48CA0-3 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The mask version HT48CA0-3 is fully pin and functionally compatible with the OTP version HT48RA0-3 device.

Features

? Operating voltage: fSYS=4MHz(3) at 2.0V~3.6V, Temperature = 0°C ~ +50°C

? 10 bidirectional I/O lines

? 6 Schmitt trigger input lines (PB7 without Pull-high resistor)

? One programmable carrier output - using 9-bit timer

? On-chip RC oscillator - 4MHz 3 when VDD=2.0V~3.6V; Temperature = 0°C ~ +50°C

? Watchdog Timer

? 1Kx14 program memory

? 32x8 data RAM

? Power-down and wake-up features reduce power consumption

? 62 powerful instructions

? Up to 1μs instruction cycle with 4MHz system clock

? All instructions executed in 1 or 2 machine cycles

? 14-bit table read instructions

? One-level subroutine nesting

? Bit manipulation instructions

? Low voltage reset function

? 20-pin SOP/SSOP package