參數(shù)資料
型號: UPD754264
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 4位單晶片微控制器
文件頁數(shù): 8/68頁
文件大?。?/td> 318K
代理商: UPD754264
8
μ
PD754264
3.2 Non-port Pins
Pin Name
Input/Output
Alternate
Function
Function
After Reset
I/O Circuit
TYPE
Note 1
PTO0
Output
P30
Timer counter output pins
Input
E-B
PTO1
P31
PTO2
P32
INT0
Input
P61
Edge detection vectored
interrupt input pin
(detected edge can be
selected)
Noise elimination circuit
can be selected.
Noise elimination
circuit can be
selected.
Asynchronous
input
Input
F -A
KR4 to KR7
Input
P70 to P73
Falling edge detection testable input pins
Input
B -A
AN0
Input
P62
Analog signal input
Input
F -A
AN1
P63
KRREN
Input
Key return reset enable pin
The reset signal is generated at the falling edge
of KRn while KRREN is high in STOP mode.
Input
B
AV
REF
Input
P60
A/D converter reference voltage
Input
F -A
X1
Input
Crystal/ceramic resonator (for system clock
oscillation) connection pin
When inputting the external clock, input the
external clock to pin X1 and input the inverted
phase of the external clock to pin X2.
X2
RESET
Input
System reset input pin (low-level active)
Pull-up resistor can be incorporated (mask option).
B -A
IC
Internally Connected Connect directly to V
DD
.
V
DD
Positive supply pin
V
SS
Ground potential
Note
Circled characters indicate the Schmitt-trigger input.
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