General Description

The HT48R30A-1/HT48C30-1 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The mask version HT48C30-1 is fully pin and functionally compatible with the OTP version HT48R30A-1 device.

Features

Operating voltage:

  fSYS=4MHz: 2.2V~5.5V

  fSYS=8MHz: 3.3V~5.5V

Low voltage reset function

25 bidirectional I/O lines (max.)

1 interrupt input shared with an I/O line

8-bit programmable timer/event counter with overflow interrupt and 8-stage prescaler

On-chip RC oscillator, external crystal and RC oscillator

32768Hz crystal oscillator for timing purposes only

Watchdog Timer

204814 program memory ROM

968 data memory RAM

Buzzer driving pair and PFD supported

HALT function and wake-up feature reduce power consumption

4-level subroutine nesting

Up to 0.5s instruction cycle with 8MHz system clock at VDD=5V

Bit manipulation instruction

14-bit table read instruction

63 powerful instructions

All instructions in one or two machine cycles

24/28-pin SKDIP/SOP package