Version 2.1

8-Bit Micro-Controller

www.raio.com.tw

2/7

RA8906

Overview

The RA8906 is an 8-bit downloadable micro-controller with 64K-byte embedded Flash ROM. It supports multiple

timer/counter sources, versatile interrupt-handling architecture and two built-in DAC’s (Digital-to-Analog

Converters). It provides a complete speech interface and 32K-bps ADPCM solution that make this chip an

excellent choice as the embedded micro-controller for educational game or toy speech products.

The built-in 4K-bytes ROM support the on-chip RAiO ICE Monitor program which controls the UART and

enables the RS232 connection between the RA8906 and a PC host. The RA8906 support the ISP(In-System

Programming) and ISD(In-System Debugging) functions. Users can download their programs as well as data

from a PC host to the embedded Flash ROM of RA8906.

RAiO also support a windows based ICE driver for customers to very easy programming & debugging their

program. Using RS232 connection between a speech toy to a PC host running RAiO’s download utility program,

toy makers are able to implement the Internet Game/Speech download features easily and give the toys multiple

attractive characteristics.

Feature

8-bit Micro Processor

64K-byte Embedded Flash ROM

80-byte User SRAM

Two 8-bit General Purpose I/O Ports

Three 12-bit Timers

Three Fixed Time-Bases (2KHz, 500Hz, 62Hz)

Two 8-bit Current Mode DACs

Support One Watch Dog Timer

Low Power Consumption at Sleep Mode

On-Chip ICE and ISP(In-System

Programming) Supporting Programs.

Support 32K bps ADPCM Solution

Operating Voltage: 4.5V ~ 6V

System Clock: 2/4/6MHz

Package/Die Form

RAiO

TM

RA8906

02xx

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