參數(shù)資料
型號(hào): μPD789022
廠商: NEC Corp.
元件分類(lèi): 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機(jī)微控制器
文件頁(yè)數(shù): 11/52頁(yè)
文件大?。?/td> 275K
代理商: ΜPD789022
11
μ
PD789022, 789024, 789025, 789026
3.2
Non-Port Pins
Pin name
I/O
Function
When reset
Also used as
INTP0
Input
Input
P30
INTP1
P31
INTP2
P32/CPT2
SI0
Input
Serial interface serial data input
Input
P22/RxD
SO0
Output
Serial interface serial data output
Input
P21/TxD
SCK0
I/O
Serial interface serial clock I/O
Input
P20/ASCK
RxD
Input
Asynchronous serial interface serial data input
Input
P22/SI0
TxD
Output
Asynchronous serial interface serial data output
Input
P21/SO0
ASCK
Input
Asynchronous serial interface serial clock input
Input
P20/
SCK0
TI0
Input
External count clock input to 8-bit timer (TM0)
Input
P50/TO0
TO0
Output
8-bit timer (TM0) output
Input
P50/TI0
TO2
Output
16-bit timer (TM2) output
Input
P51
CPT2
Input
Capture edge input pin
Input
P32/INTP2
KR0-KR7
Input
Key return signal detection pin
Input
P40-P47
RESET
Input
System reset input
Input
-
X1
Input
System clock oscillation crystal connection
-
-
X2
-
-
-
V
DD
-
Positive power supply
-
-
IC
-
This pin is internally connected. Connect this pin directly to the V
SS
pin.
-
-
NC
-
This pin is not internally connected. Connect this pin to the V
SS
pin
(or leave this pin open).
-
-
V
SS
-
Ground potential
-
-
External interrupt input by which the active edge (rising edge, falling
edge, or both rising and falling edges) can be specified
相關(guān)PDF資料
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