Version 2.1
RA8906
8-Bit Micro-Controller
RICE-2000 (RICE for short) is a full-completed environment developed by RAiO especially for RA89XX series.
The major reason for developing RICE is give fully convenience to program designers who are using RA89XX IC,
and let them enjoy consistent and friendly design environment at planning, designing and debugging. In RICE
environment, it saves a great deal of developing time by not only providing Editor for users to do direct coding,
but also providing many Hot-Key functions for users to do direct compiling, linking, and downloading. Since
RA89XX series carry e-MCU micro-processor and a framework of ISP(In-System-Programming), ISD(In-System
Debugging), then this simple and reliable environment of RICE can let program designers to proceed design
and debug in Real Chip. Moreover, the mass-production ICs is ready for clients to do planning and designing
directly without diverse traits happened between developing time and mass production period.
In the meanwhile, in order to support integrated speech interface, RICE provides a solution of 32K-bps ADPCM
for programmers to easily combine programs and speech files. If you want to have more information and
program design skills of RA8906, please refer to the user manual of RICE-2000.
Application
The following block diagram is the basic application circuit of RA8906. We also give three examples on the user
manual of RICE-2000 to let users have more understanding of RA8906 and the develop environment of RICE-
2000, and then start to proceed program designing and product developing. The examples have one simple I/O
control and two speech samples. Please refer to the user manual of RICE-2000 if you needed.
V CC
R A 8906
SPK .
P T 1 _ [7 :0 ]
D A C O 1
D is p la y /L E D
P T 2 _ [7 :0 ]
R ESET#
X C LK I
B u tto n /K e y M a trix
X C LK Q
To PC
R S232
TX D
R X D
RAiO TECHNOLOGY INC.
6/7
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
