µPD75216A
3. PIN FUNCTIONS
3.1 PORT PINS
Input / Output
Dual-
8-Bit
I/O
Pin Name
I/O
Function
4-bit input port (PORT0).
After Reset
Input
Circuit Type
*
Function Pin
×
P00
P01
Input
Input/output
Input/output
Input
INT4
SCK
SO
B
F
P02
G
B
B
P03
SI
P10
INT0
INT1
INT2
TI0
Input
Input
Input
Noise elimination function available
Noise elimination function available
P11
P12
4-bit input port (PORT1).
P13
4-bit input/output port (PORT2).
P20
Input/
–––
×
E
output
P21
–––
P22
–––
P23
BUZ
–––
Input/
Programmable 4-bit input/ output port (PORT3).
Input/output specifiable in 1-bit units.
Input
Input
Input
Input
P30 to P33
E
E
E
V
output
●
×
Input/
P40 to P43
P50 to P53
P60 to P63
–––
–––
–––
4-bit input/output port (PORT4).
LED direct drive capability.
output
Input/
4-bit input/output port (PORT5).
LED direct drive capability.
output
Programmable 4-bit input/output port (PORT6).
Input/output specifiable in bit-wise.
Input/
output
On-chip pull-down resistor available (mask
option). Suitable for key input.
×
4-bit P-ch open-drain, high-voltage, high-current
output port (PORTH).
I
PH0
PH1
PH2
PH3
Output
T13/S12
T12/S13
T11/S14
T10/S15
Low level
(with an on-
chip pull-
down resistor)
or high
impedance.
LED direct drive capability. On-chip pull-down
resistor available (mask option).
*
Schmitt-triggered inputs are circled.
9
NEC [ NEC ]
