General Description

The HT46R48 are 8-bit, high performance, RISC architecture microcontroller devices specifically designed for A/D applications that interface directly to analog signals, such as those from sensors.

Features

• Operating voltage:

fSYS=4MHz: 2.2V~5.5V

fSYS=8MHz: 3.3V~5.5V

• 19 bidirectional I/O lines (max.)

• 1 interrupt input shared with an I/O line

• 8-bit programmable timer/event counter with overflow interrupt and 7-stage prescaler

• On-chip crystal and RC oscillator

• Watchdog Timer

• 204814 program memory

• 648 data memory RAM

• Supports PFD for sound generation

• HALT function and wake-up feature reduce power consumption

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

• 6-level subroutine nesting

• 4 channels 9-bit resolution A/D converter

• 1 channel 8-bit PWM output shared with an I/O line

• Bit manipulation instruction

• 14-bit table read instruction

• 63 powerful instructions

• All instructions in one or two machine cycles

• Low voltage reset function

• 24-pin SKDIP/SOP/SSOP package