HT49R50 Просмотр технического описания (PDF) - Holtek Semiconductor

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HT49R50

8-Bit Microcontroller

Holtek Semiconductor 

HT49R50

8-Bit Microcontroller

Features

· Operating voltage:

- 2MHz: 3.0V~5.2V

- 2MHz~4MHz: 4.5V~5.5V

· 8 input lines

· 12 bidirectional I/O lines

· Two external interrupt input

· Two 8-bit programmable timer/event

counter with PFD (programmable

frequency divider) function

· LCD driver with 33´3 or 32´4 segments

· 4K´15 program memory EPROM

· 160´8 data memory RAM

· Real Time Clock (RTC)

· 8-bit prescaler for RTC

· Watchdog timer

· Buzzer output

· On-chip crystal and RC oscillator

· Halt function and wake-up feature

reduce power consumption

· 6-level subroutine nesting

· Bit manipulation instruction

· 15-bit table read instruction

· Up to 1ms instruction cycle with 4MHz

system clock

· 63 powerful instructions

· All instructions in 1 or 2 machine cycles

· 80/100-pin QFP package

General Description

The HT49R50 is an 8-bit high performance single

chip microcontroller. Its single cycle instruction

and two-stage pipeline architecture make it suit-

able for high speed applications. The device is

suited for use in multiple LCD low power applica-

tions among which are calculators, clock timers,

games, scales, leisure products, other hand held

LCD products, and battery system in particular.

1

October 22, 1999

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