HT48RB8 datasheet(1/45 Pages) HOLTEK

Part #	HT48RB8

Description	8-Bit USB Type OTP MCU

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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HT48RB8

8-Bit USB Type OTP MCU

Rev. 1.30

1

February 10, 2003

General Description

This device is an 8-bit high performance RISC-like

microcontroller designed for USB product applications.

It is particularly suitable for use in products such as

mice, keyboards and joystick. A HALT feature is in-

cluded to reduce power consumption.

Features

· Operating voltage:

fSYS=6M/12MHz: 4.4V~5.5V

· Low voltage reset function

· 32 bidirectional I/O lines (max.)

· 8-bit programmable timer/event counter with over-

flow interrupt

· 16-bit programmable timer/event counter and over-

flow interrupts

· Crystal oscillator (6MHz or 12MHz)

· Watchdog Timer

· 6 channels 8-bit A/D converter

· USB1.1 low speed function

· 4 endpoints supported (endpoint 0 included)

· 4096´15 program memory ROM

· 160´8 data memory RAM

· HALT function and wake-up feature reduce power

consumption

· 8-level subroutine nesting

· Up to 0.33ms instruction cycle with 12MHz system

clock at VDD=5V

· Bit manipulation instruction

· 15-bit table read instruction

· 63 powerful instructions

· All instructions in one or two machine cycles

· 28-pin SOP, 48-pin SSOP package

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HT48RB8 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

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