UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 79
UPD75238GJ
Manufacturer Part Number
UPD75238GJ
Description
4 BIT SINGLE-CHIP MICROCOMPUTER
Manufacturer
NEC [NEC]
Datasheet
1.UPD75238GJ.pdf
(190 pages)
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4.9 SERIAL INTERFACE
4-5 lists the differences between channel 0 and channel 1.
3-wire serial I/O
2-wire serial I/O
Serial bus interface
The PD75238 has two channels of clock synchronous 8-bit serial interface: Channel 0 and channel 1. Table
Serial transfer mode, function
Clock selection
Transfer method
Transfer end flag
Table 4-5 Differences between Channel 0 and Channel 1
f
Start bit switchable: MSB/LSB
Serial transfer end interrupt request
flag (IRQCSI0)
Available
X
/2
4
, f
X
/2
3
, TOUT F/F, external clock
Channel 0
f
Start bit: MSB
Serial transfer end flag (EOT)
Not available
X
/2
4
, f
X
/2
3
, external clock
Channel 1
PD75238
79
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