General Description

The HT46R01A is 8-bit high performance, RISC architecture microcontroller devices specifically designed for a wide range of applications. In addition to providing the usual microcontroller I/O control functions, the fully integrated A/D converter allows the interfacing and processing of external analog signals such as those from

sensors.

Features

Operating voltage:

  fSYS= 4MHz: 2.2V~5.5V

  fSYS= 8MHz: 3.3V~5.5V

  fSYS= 12MHz: 4.5V~5.5V

7 bidirectional I/O lines and 1 input line

External interrupt input shared with an I/O line

Single 8-bit programmable Timer/Event Counters with overflow interrupt and 7-stage prescaler

External crystal system oscillator

Fully integrated internal RC oscillator available with three frequencies: 4MHz, 8MHz or 12MHz

Watchdog Timer function

PFD for audio frequency generation

Power down and wake-up functions to reduce power consumption

Up to 0.33s instruction cycle with 12MHz system clock at VDD=5V

4-level subroutine nesting

4-channel 8-bit resolution A/D converter

8-bit PWM output shared with I/O line

Bit manipulation instruction

Table read instructions

63 powerful instructions

All instructions executed in one or two machine cycles

Low voltage reset function

10-pin ultra-small MSOP package