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