upd75238 Renesas Electronics Corporation., upd75238 Datasheet - Page 81
upd75238
Manufacturer Part Number
upd75238
Description
4 Bit Single-chip Microcomputer
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD75238.pdf
(190 pages)
- Current page: 81 of 190
- Download datasheet (2Mb)
P02/SO0/SB0
P03/SI0/SB1
P01/SCK0
P01 output
latch
Selec-
tor
Selec-
tor
CSIM0
8/4
Bit
test
Fig. 4-39 Block Diagram of the Serial Interface (Channel 0)
8
8
Internal bus
Slave address register (SVA)
Address comparator
Shift register (SIO0)
Bus release/
command/
acknowledge
detection circuit
Serial clock
control circuit
Serial clock
counter
8
Coincidence
signal
(8)
(8)
RELD
CMDD
ACKD
(8)
Bit manipulation
INTCSI0
control circuit
SET CLR
D
RELT
Q
CMDT
SO0 latch
Busy/
acknowledge
output circuit
Serial clock
selector
SBIC
Bit test
External SCK0
f
f
f
TOUT F/F
(from timer/event counter)
INTCSI0
X
X
X
RQCSI0
set signal
/2
/2
/2
3
4
6
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