UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 8

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

8
1.1 PORT PINS (2/2)
Note The circuits enclosed in circles have a Schmitt-triggered input.
Pin name
P100
P101
P102
P103
P110
P111
P112
P113
P120
P121
P122
P123
P130
P131
P132
P133
P140
P141
P142
P143
P150
P151
P152
P153
PH0
PH1
PH2
PH3
P80
P81
P82
P83
P90
P91
P92
P93
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
I
I
S12/T13/P150
S13/T12/P151
S14/T11/P152
S15/T10/P153
S12/T13/PH0
S13/T12/PH1
S14/T11/PH2
S15/T10/PH3
Also
used as
S10/T15
S11/T14
SCK1
AN4
AN5
AN6
AN7
PPO
SO1
S16
S17
S18
S19
S20
S21
S22
S23
SI1
S0
S1
S2
S3
S4
S5
S6
S7
S8
S9
4-bit input port (port 8).
4-bit input port (port 9)
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
P142 and P143 can drive LED directly.
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
LED can be driven directly.
P-ch open-drain, 4-bit high-voltage output port.
Pull-down resistors can be provided (mask
option).
Function
8-bit I/O
Input
Input
V
(when pull-
down resistor
to V
provided), V
level (when pull-
down resistor to
V
vided), or high-
impedance
V
(when pull-
down resistor
to V
provided) or
high-
impedance
LOAD
SS
LOAD
When reset
is pro-
LOAD
LOAD
level
level
is
is
SS
I/O
circuit
type
Y - A
PD75238
I - F
I - C
A
F
E
B
Note