General Description

The HT48R01/HT48R02/HT48R03 are 8-bit high performance, RISC architecture microcontroller devices specifically designed for I/O control. The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, Power-down and wake-up functions, Watchdog Timer, buzzer driver, as well as low cost, enhance the versatility of these devices to suit a wide range of application possibilities such as industrial control, consumer products, subsystem controllers, etc.

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

Interrupt input shared with I/O line

4 oscillator configuration options

-External crystal OSC

-External RC OSC

-Internal RC+I/O (PA5, PA6)

-Internal RC+RTC OSC (32768Hz)

Internal RC oscillator

-3 frequency selections: 4MHz/8MHz/12MHz

-4MHz with 10 variation (2.2V~5.5V, 25C)

-8MHz with 10 variation (3.3V~5.5V, 25C)

-12MHz with 10 variation (4.5V~5.5V, 25C)

Watchdog Timer

Program memory ROM: Up to 4096
15

Data memory RAM: Up to 160
8

Buzzer driving pair and PFD supported

Power-down and wake-up functions reduce power consumption

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

All instructions executed within one or two machine cycles

14-bit or 15-bit table read instruction

Up to 8-levels of subroutine nesting

Bit manipulation instruction

Low voltage reset function

10-pin MSOP package