UPD17073 NEC, UPD17073 Datasheet - Page 114

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

114
reset
At
Serial I/O
mode select
register
Power-ON
Clock stop
CE
Name
Figure 14-3. Configuration of Serial I/O Mode Select Register
b
0
0
3
Flag symbol
b
O
S
S
E
L
0
1
I
0
0
0
2
b
O
H
S
Z
0
1
0
0
0
I
I
1
b
O
T
S
S
0
1
I
0
0
0
0
Stops (wait status)
Starts
General-purpose output port
Serial data output pin
As serial data input (SI) pin
As serial data output (SO1) pin
Fixed to 0
(BANK1)
Address
60H
Read/
Write
R/W
Selects function of P0B3/SI/SO1 pin
Starts/stops serial communication
Sets function of P1C0/SO0 pin
PD17072,17073