UPD75238GJ

Manufacturer Part NumberUPD75238GJ
Description4 BIT SINGLE-CHIP MICROCOMPUTER
ManufacturerNEC [NEC]
UPD75238GJ datasheet
 
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Table 2-4
Hardware name (symbol)
Address
b3
b2
b1
FD0H
Clock output mode register (CLOM)
FD4H
Static mode register B (STATB)
FD6H
Static mode register A (STATA)
FD8H
SOC
EOC
A/D conversion mode register (ADM)
FDAH
SA register (SA)
FDCH
Pull-up resistor specification register group
A (POGA)
FE0H
Serial operation mode register (CSIM0)
CSIE0
COI
WUP
CMDD
RELD
CMDT
FE2H
SBI control register (SBIC)
BSYE
ACKD
ACKE
FE4H
Serial I/O shift register 0 (SIO0)
FE6H
Slave address register (SVA)
PM33
PM32
PM31
FE8H
Port mode register group A (PMGA)
PM63
PM62
PM61
FECH
PM2
Port mode register group B (PMGB)
PM7
PM5
PD75238 I/O Map (3/4)
Number of ma-
Bit manipu-
nipulatable bits
R/W
lation ad-
dressing
b0
1 bit 4 bits 8 bits
W
W
W
R/W
R
W
W
R/W
mem.bit
RELT
R/W
mem.bit
ACKT
R/W
W
PM30
W
PM60
W
PM4
PD75238
Remarks
ADM is write only
during 8-bit manipu-
lation.
CSIM0 is write only
during 8-bit manipu-
lation.
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