Version 1.0

8-Bit Micro-Controller

www.raio.com.tw

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RA8917

Overview

RA8917 is an 8-bit downloadable micro-controller.

Up to 22MHz system clock makes it a perfect choice for

high-end device.

It contains a 16x16 Multiplier and Accumulator (MAC), which not only greatly reduce

programmer’s effort, but also shorten development time.

RA8917 is embedded 4-channel 12-Bit ADC that

can vary your application fields in analog detection, such as temperature, pressure, humidity, etc.

Moreover,

matched with LCM (LCD Module), 12-bit ADC can be perfectly used in Touch Panel function.

RA8917 is suitable for any downloadable device no matter used by end-users for voice/data download, or

used by programmers for S/W program updated.

The built-in 8K-byte ROM supports the on-chip RAiO ICE

Monitor program, ISP(In-System Programming) and ISD(In-System Debugging), which controls the UART

and enables the RS232 connection between the RA8917 and a PC host.

Besides that, IrDA application is

also allowed to give the device multiple attractive characteristics.

In short, RA8917 supports embedded 4K-byte SRAM, three I/O ports, LCD interface, built in PLL / RC

Oscillator, LVD, multiple timer/counter sources, versatile interrupt-handling architecture, built-in one DAC

(Digital-to-Analog Converters), 16x16 Multiplier and Accumulator (MAC), 4-channel 12-Bit ADC and support

three EDO DRAM (Extended Data Out) interface configuration: one 4Mx4bit chip, two 4Mx4 chips and one

8Mx8 chip.

Feature

8-bit Micro Processor for Maximum 22MHz

Support 3 EDO DRAM Interface configuration

1. External one 4Mx4bit chip

2. External two 4Mx4bit chips

3. External one 8Mx8bit chip

Internal 4K-Byte SRAM

Support External ROM/RAM/Flash Interface

Flexible

External

Flash

Support,

Up

to

128MByte

Flexible I/O Interrupt & Wake-Up Mode

Support Wake-Up Reset Mode

Support LVD(Low Voltage Detector)

Support External Memory Interface

Support LCD Interface

Support PWM Output with 50% or 100% duty

select

Four 8-Bits Programmable I/O Port

Three 12-Bits Timer

Six Time-Base Options

Watch Dog Timer

One 3 -Level 10-bits Fixed Current Mode DAC

Support 4-channel 12-bit ADC with Touch

Panel Function

One User’s UART with Baud Rate Generator,

Up to 115200bps

UART Provide Normal, IrDA/ASK IR Mode

Support UART Wakeup

Support Idle/Sleep/Power Saving Mode

Support Timer Wake-Up Mode

Support H/W 16x16 Multiplier with Adder

Option

1Hz, 2Hz and 1/60Hz Interrupt/Wake up

Support Interrupt Vector & Priority

Built in two Independent Oscillator; Low Speed

(32768Hz) and High Speed (From 1.84MHz to

22.1MHz)

Low Power Consumption

Operating Voltage: 2.2V ~ 4.5V

Package: Die Form or PQFP-128Pin