UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 43

• Manufacturer Part Number: UPD75238GJ
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

Bit of port mode register
group A
Output latch
Input buffer
PMmn
Fig. 4-3 Configuration of Ports 3n and 6n (n = 0 to 3)
Bit of port mode
register group B (m = 2)
Input buffer
Output
latch
PMm
Fig. 4-4 Configuration of Port 2
MPX
m = 3, 6
n = 0 to 3
PMmn = 0
PMmn = 1
MPX
Output buffer
Bit m of
POGA
PMm = 0
PMm = 1
Output
buffer
Bit m of
POGA
V
DD
Pull-up
resistor
P-ch
Pm0
Pm1
Pm2
Pm3
V
PD75238
DD
P-ch
Pull-up
resistor
Pmn
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