General Description

The HT46R321 is 8-bit, high performance, RISC architecture microcontroller devices. With their fully integrated A/D converter they are especially suitable for applications which interface to analog signals, such as those from sensors. The addition of an internal operational amplifier/comparator and PWM modulation functions further adds to the analog capability of these devices.

特性 Features

? Operating voltage:

fSYS=4MHz: 2.2V~5.5V

fSYS=8MHz: 3.3V~5.5V

? 21 bidirectional I/O lines (max.)

? support 84 LED driver

? Single interrupt input shared with an I/O line

? 8-bit programmable timer/event counter with overflow interrupt

? Integrated crystal and RC oscillator

? Watchdog Timer

? 204815 Program Memory capacity

? 888 Data Memory capacity

? Integrated PFD function for sound generation

? Power-down and wake-up functions reduce power consumption

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

? 6-level subroutine nesting

? 6 channel 12-bit resolution A/D converter

? Integrated single operational amplifier or comparator selectable via configuration option

? Peripheral clock output  PCK

? Dual 8-bit PWM outputs shared with I/O lines

? Bit manipulation instruction

? Full table read instruction

? 63 powerful instructions

? All instructions executed in one or two machine cycles

? Low voltage reset function

? 28-pin SKDIP/SOP/SSOP packages