Version 1.0
Overview
8-Bit Micro-Controller
RA8917
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
128MByte
Flash
Support,
Up
to
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
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
RAiO TECHNOLOGY INC.
2/11
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
