General Description

The HT48R70A-1/HT48C70-1 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The mask version HT48C70-1 is fully pin and functionally compatible with the OTP version HT48R70A-1 device.

Features

• Operating voltage:

fSYS=4MHz: 2.2V~5.5V

fSYS=8MHz: 3.3V~5.5V

• Low voltage reset function

• 56 bidirectional I/O lines (max.)

• 1 interrupt input

• 216-bit programmable timer/event counter and overflow interrupts

• On-chip RC oscillator, external crystal and RC oscillator

• 32768Hz crystal oscillator for timing purposes only

• Watchdog Timer

• 819216 program memory ROM

• 2248 data memory RAM

• Buzzer driving pair and PFD supported

• HALT function and wake-up feature reduce power consumption

• 16-level subroutine nesting

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

• Bit manipulation instruction

• 16-bit table read instruction

• 63 powerful instructions

• All instructions in one or two machine cycles

• 48-pin SSOP, 64-pin QFP package