General Description

The HT46R14A is an 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

21 bidirectional I/O lines

Three interrupt input shared with an I/O line

Two 8-bit programmable timer/event counters with overflow interrupt and 7-stage prescaler

Two 8-bit programmable pulse generator - PPG output channel with prescaler and 8-bit programmable timer counter, supporting both active low or active high output

Two comparator

409615 program memory

1928 data memory RAM

Integrated crystal and RC oscillator

Watchdog Timer

PFD for audio generation

Power-down and wake-up functions for reduced power consumption

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

8-level subroutine nesting

8 channel 9-bit resolution A/D converter

Two comparators with interrupt function

Bit manipulation instruction

15-bit table read instruction

63 powerful instructions

Instructions executed in one or two machine cycles

Low voltage reset function

28-pin SKDIP/SOP packages