參數(shù)資料
型號： μPD780973(A)
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8 Bit Single Chip Microcontrollers
中文描述： 8位單片機微控制器
文件頁數(shù)： 11/52頁
文件大?。?/td> 315K
代理商： ΜPD780973(A)
11
m
PD780973(A)
3.2 Non-Port Pins
Pin Name
I/O
Function
After Reset
Alternate
Function
INTP0 to INTP2
Input
External interrupt input by which the effective edge (rising edge,
edge, or both rising edge and falling edge) can be specified
Input
P00 to P02
SI
Input
Serial interface serial data input
Input
P52
SO
Output
Serial interface serial data output
Input
P51
SCK
I/O
Serial interface serial clock input/output
Input
P50
RxD
Input
Serial data input for asynchronous serial interface
Input
P53
TxD
Output
Serial data output for asynchronous serial interface
Input
P54
TI00
Input
Capture trigger signal input to capture register (CR00)
Input
P40
TI01
Capture trigger signal input to capture register (CR01)
P41
TI02
Capture trigger signal input to capture register (CR02)
P42
TIO2
I/O
8-bit timer (TM2) input/output
Input
P43
TIO3
8-bit timer (TM3) input/output
P44
PCL
Output
Clock output (for trimming of main system clock)
Input
SGOA/P60
SGOA
Output
Sound generator signal output
Input
PCL/P60
SGOF
SGO/P61
SGO
SGOF/P61
TPO
Output
16-bit timer (TM0) prescaler output
Input
P81/S19
S0 to S4
Output
LCD controller/driver segment signal output
Output
–
S5 to S12
Input
P97 to P90
S13 to S18
P87 to P82
S19
P81/TPO
COM0 to COM3
Output
LCD controller/driver common signal output
Output
–
V
LCD
–
LCD drive voltage
–
–
SM11 to SM14
Output
Meter control signal output
Hi-Z
P20 to P23
SM21 to SM24
P24 to P27
SM31 to SM34
P30 to P33
SM41 to SM44
P34 to P37
ANI0 to ANI4
Input
A/D converter analog input
Input
P10 to P14
AV
REF
Input
A/D converter reference voltage input (shared with analog
power supply)
–
–
AV
SS
–
A/D converter ground potential. Same potential as V
SS
.
–
–
RESET
Input
System reset input
–
–
X1
Input
Main system clock oscillation crystal connection
–
–
X2
–
–
–
SMV
DD
–
Power supply for meter controller/driver
–
–
SMV
SS
–
Ground potential for meter controller/driver
–
–
V
DD
–
Positive power supply
–
–
V
SS
–
Ground potential
–
–
IC
–
Internally connected. Connect directly to V
SS
.
–
–
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