Version 1.0
8-Bit Micro-Controller
Receive Data
This is the received data input of system UART. Normally it’s connected to the
RS232’s TX of PC.
Transmit Data
This signal is the transmitted data output of system UART. Normally it’s
connected to the RS232’s RX of PC.
Oscillator1 Input.
This is the input signal of external X’tal(32768Hz).
Oscillator1 Output.
This is the output signal of external X’tal(32768Hz).
Oscillator2 Input.
This is the input signal of external X’tal. (maximum up to 22.1184MHz)
Oscillator2 Output.
This is the output signal of external X’tal. (maximum up to 22.1184MHz)
OSC2 Frequency Select
These input signals are used to select the OSC2 speed during the hardware
reset.
CKS2
0
0
0
0
1
1
1
1
CKS1
0
0
1
1
0
0
1
1
CKS0
0
1
0
1
0
1
0
1
OSC2 Clock
1.8432MHz
3.6864MHZ
5.5296MHz
7.3728MHz
11.0592MHz
14.7456MHz
18.432MHz
22.1184MHz
RA8917
RXD
IN
TXD
OSC1_XA
OSC1_XB
OSC2_XA
OSC2_XB
OUT
IN
OUT
IN
OUT
CKS[2:0]
IN
TYPE
VEXT
TEST[2:0]#
VDD
VDDP
AVDD
GND
GNDP
AGND
IN
IN
IN
PWR
PWR
PWR
PWR
PWR
PWR
Note: Couldn’t be floating.
Clock Type Select for 32768Hz
0: RC Oscillator
1: 32768 X’tal
Note: Couldn’t be floating.
Low Voltage Detector Input
Test Pins
Test Pins are for RAiO’s internal testing purpose used in testing IC and ROM
status. Normally, users will not use these pins. Therefore, please connect
these three pins to VDD when making PCB board.
Power Supply Voltage of Chip Core.
Power Supply Voltage of Chip I/O.
Analog Power Supply Voltage.
Ground of Chip Core.
Ground of Chip I/O.
Analog Ground.
RAiO TECHNOLOGY INC.
9/11
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
