Non-Port Pin Functions - NEC PD750004 User Manual

Also
Input/
Pin used
output
as
TI0 Input P13
PTO0 I/O P20
PTO1 P21
PCL I/O P22
BUZ I/O P23
SCK I/O P01
SO/SB0 I/O P02
SI/SB1 I/O P03
INT4 Input P00
INT0 Input P10
INT1 P11
INT2 Input P12
KR0-KR3 I/O P60-P63
KR4-KR7 I/O P70-P73
X1, X2 Input —
XT1 Input —
XT2 —
RESET Input —
Note 2
IC — —
V — —
DD
V — —
SS
Note 2
V — P10/INT0 Program voltage application for program memory
PP
MD0- I/O P30-P33
Note 3
MD3
NC — —
Notes 1. The circuits enclosed in circles have a Schmitt-triggered input.
2. Used as the V
3. Provided only in the µPD75P0016.
Table 2-2. Non-Port Pin Functions
Inputs external event pulse to the timer/event counter
Timer/event counter output
Timer counter output
Clock output
Fixed frequency output
(for buzzer or system clock trimming)
Serial clock I/O
Serial data output or serial data bus I/O
Serial data input or serial data bus I/O
Edge detection vectored interrupt input
(Either a rising or falling edge is detected.)
The INT0/P10 pin has a noise eliminating function.
Edge detection vectored interrupt input
(The edge to be detected is selectable.)
Rising edge detection testable input
Parallel falling edge detection testable input
Parallel falling edge detection testable input
Connection pin to a crystal/ceramic resonator for main
system clock generation.
When external clock is used, it is input to X1,
and its inverted signal is input to X2.
Connection pin to a crystal for subsystem clock
generation.
When external clock is used, it is input to XT1, and
XT2 is left open.
System reset input
Internally connected.
Connect to V , keeping the wiring as short as possible.
DD
Positive power supply
GND potential
(PROM) write/verify operation.
+12.5 V is applied for PROM write/verify operation.
Connect to V , keeping the wiring as short as
DD
possible.
Mode selection for program memory (PROM)
write/verify operation.
No connection
pin for the µPD75P0016.
PP
CHAPTER 2 PIN FUNCTIONS
Function
Synchronous
Asynchronous
Asynchronous
I/O
Upon
circuit
reset
Note 1
type
— B -C
Input E-B
Input E-B
Input E-B
Input F -A
Input F -B
Input M -C
— B
— B -C
— B -C
Input F -A
Input F -A
— —
— —
— B
— —
— —
— —
— —
Input E-B
— —
1 1
*