HT48R52A Holtek Semiconductor, HT48R52A Datasheet

HT48R52A

Manufacturer Part Number

HT48R52A

Description

I/O Type 8-Bit OTP MCU

Manufacturer

Holtek Semiconductor

Datasheet

1.HT48R52A.pdf (36 pages)

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Technical Document

Features

General Description

This device is an 8-bit high performance, RISC architec-

ture microcontroller specifically designed for multiple

I/O control product applications. The advantages of low

power consumption, I/O flexibility, timer functions, oscil-

lator options, HALT and wake-up functions, watchdog

Rev. 1.40

Tools Information

FAQs

Application Note

Operating voltage:

2k 14 program memory ROM

88 8 data memory RAM

16 bidirectional I/O lines

24 output lines

One external interrupt input

One internal interrupt

8 bit programmable timer/event counter

4-level subroutine nesting

Watchdog Timer (WDT)

Low voltage reset (LVR)

External RC and 32768Hz crystal oscillator

SYS

HA0002E Reading Larger than Usual MCU Tables

HA0007E Using the MCU Look Up Table Instructions

HA0011E HT48 & HT46 Keyboard Scan Program

HA0019E Using the Watchdog Timer in the HT48 MCU Series

HA0020E Using the Timer/Event Counter in the HT48 MCU Series

=32768Hz: 2.2V~5.5V

=4MHz: 2.2V~5.5V

=8MHz: 3.3V~5.5V

I/O Type 8-Bit OTP MCU with 16´16 High Current LED Driver

timer, as well as low cost, enhance the versatility of

these devices to suit a wide range of application possi-

bilities such as industrial control, consumer products,

subsystem controllers, etc.

Dual clock system offers three operating modes

HALT function and wake-up feature reduce power

consumption

14-bit table read instructions

63 powerful instructions

One instruction cycle: 4 system clock periods

All instructions in 1 or 2 instruction cycles

Bit manipulation instructions

Up to 0.5 s instruction cycle with 8MHz system clock

44/52-pin QFP package

Normal mode: Both RC and 32768Hz clock active

Slow mode: 32768Hz clock only

Idle mode: Periodical wake-up by watchdog timer

overflow

HT48R52A

April 25, 2007

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