UPD75P336 Datasheet, PDF (6/56 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

µPD75P336
1. PIN FUNCTIONS
1.1 PORT PINS (1/2)
Pin Name
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30 *2
P31 *2
P32 *2
P33 *2
Input/Output
Input
Input/output
Input/output
Input/output
Input
Input/output
Input/output
Dual-
Function Pin
Function
8-bit I/O
INT4
SCK
4-bit input port (PORT0)
SO/SB0
Internal pull-up resistor specification by
software is possible for P01 to P03 as a 3-bit
×
unit.
SI/SB1
INT0
With noise elimination circuit
INT1
4-bit input port (PORT1)
×
INT2
Internal pull-up resistor specification by
software is possible as a 4-bit unit.
TI0
PTO0
PTO1
4-bit input/output port (PORT2)
Internal pull-up resistor specification by
×
PCL
software is possible as a 4-bit unit.
BUZ
LCDCL MD0
Programmable 4-bit input/output port (PORT3)
SYNC MD1 Input/output settable bit-wise.
Internal pull-up resistor specification by
×
MD2
software is possible as a 4-bit unit.
MD3
P40 to P43 *2 Input/output
N-ch open-drain 4-bit input/output port (PORT
—
4).
Data input/output pins for program memory
(PROM) write/verify (low-order 4 bits).
After Reset
Input
Input
Input
Input
Input
P50 to P53 *2 Input/output
N-ch open-drain 4-bit input/output port (PORT
5)
—
Data input/output pins for program memory
(PROM) write/verify (high-order 4 bits).
Input
P60
KR0
Programmable 4-bit input/output port (PORT6).
P61
KR1
Input/output settable bit-wise.
Input/output
Internal pull-up resistor specification by
P62
KR2
software is possible as a 4-bit unit.
P63
KR3
P70
KR4
4-bit input/output port (PORT7).
P71
KR5
Internal pull-up resistor specification by
Input/output
software is possible as a 4-bit unit.
P72
KR6
P73
KR7
Input
Input
* 1.
: Indicates a Schmitt-triggered input.
2. Direct LED drive capability.
I/O Circuit
Type *1
B
F -A
F -B
M-C
B -C
E-B
E-B
M-B
M-B
F -A
F -A
6