upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 115
upd17072
Manufacturer Part Number
upd17072
Description
4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD17072.pdf
(226 pages)
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Communi-
cation
mode
3-wire serial
I/O
and
2-wire serial
I/O
Note 1
Note 2
Notes 1. To set the 3-wire serial I/O mode, be sure to reset SIOSEL to 0 and set SIOHIZ to 1.
2. To use the 2-wire serial I/O mode, be sure to reset SIOHIZ to 0.
S
O
S
E
L
0
1
I
Serial
I/O
select
Internal
clock
(reception)
Output
(trans-
mission)
Control flags of serial interface
O
H
S
Z
0
1
I
I
Table 14-1. Set Status of Each Pin By Control Flags
Serial
interface
pin setting
General-
purpose
output
Serial
output
S
O
C
K
1
0
0
1
1
I
S
O
C
K
0
0
1
0
1
I
Clock
setting
External
clock
Internal
clock
P0B2/SCK
P1C0/SO0
Pin name
P0B3/SI/
SO1
P
B
B
O
0
3
0
1
0
1
I
P
B
B
O
0
2
0
1
0
1
I
I/O setting flag of each pin
During wait: general-purpose input port
Wait released: external clock input
General-purpose output port
General-purpose input port
During wait: waits for internal clock output
Wait released: internal clock output
During wait: general-purpose input port
Wait released: serial input
General-purpose output port
During wait: waits for serial output
Wait released: serial output
General-purpose output port
During wait: waits for serial output
Wait released: serial output
Set status of pin
PD17072,17073
115
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