upd75238 Renesas Electronics Corporation., upd75238 Datasheet - Page 24
upd75238
Manufacturer Part Number
upd75238
Description
4 Bit Single-chip Microcomputer
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD75238.pdf
(190 pages)
- Current page: 24 of 190
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24
Address
FBAH
FBBH
FBCH
FBDH
FBEH
FCCH
FB0H
FB2H
FB3H
FB4H
FB5H
FB7H
FB8H
FB9H
FBFH
FC0H
FC1H
FC2H
FC3H
FC8H
FC9H
Program status word (PSW)
Interrupt priority select register (IPS)
Processor clock control register (PCC)
INT0 mode register (IM0)
INT1 mode register (IM1)
System clock control register (SCC)
Bit sequential buffer 0 (BSB0)
Bit sequential buffer 1 (BSB1)
Bit sequential buffer 2 (BSB2)
Bit sequential buffer 3 (BSB3)
Serial I/O shift register 1 (SIO1)
CSIE1
IST1
IEKS
IE4
IE1
b3
Hardware name (symbol)
IRQKS
IRQT1
IRQ4
IRQ1
IST0
b2
CSIM11
IECSI0
IETPG
MBE
IEBT
IET0
IEW
IE0
IE2
b1
Table 2-4
IRQCSI0
IRQTPG
CSIM10
IRQBT
IRQT0
IRQW
IRQ0
IRQ2
EOT
RBE
b0
PD75238 I/O Map (2/4)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
W
W
W
W
W
1 bit 4 bits 8 bits
Number of ma-
nipulatable bits
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Bit manipu-
lation ad-
dressing
fmem.bit
fmem.bit
Bit 2 is always set to
0.
Bits 1, 2, and 3 are
always set to 0.
Only bits 0 and 3
allow bit manipula-
tion.
Remarks
PD75238
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