參數(shù)資料
型號(hào)： UPD75P108BDW
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 8/46頁(yè)
文件大?。?/td> 381K
代理商： UPD75P108BDW
8
μ
PD75P108B
1.2
OTHER PINS
Dual-
Function Pin
—
—
P20
P21
P01
P02
P03
P00
P10
P11
P12
P13
P22
—
—
P30 to P33
—
—
—
I/O Circuit
Type
*1
N
B
E
F
E
B
B
B
B
E
B
E
*
1.
2.
indicates Schmitt-triggered input.
The device will not operate correctly unless V
PP
is connected to V
DD
in normal use.
Pin Name
PTH00 to PTH03
TI0
TI1
PTO0
PTO1
SCK
SO
SI
INT4
INT0
INT1
INT2
INT3
PCL
X1, X2
RESET
MD0 to MD3
V
DD
V
SS
V
PP
*2
Input/Output
Input
Input
Input/output
Input/output
Input/output
Input
Input
Input
Input
Input/output
Input
Input/output
Function
Variable threshold voltage 4-bit analog input port.
External event pulse input to timer/event counter.
Or edge detection vectored interrupt input pin, or 1-bit input
is also possible.
Timer/event counter output pin.
Serial clock input/output pin.
Serial data output pin.
Serial data input pin.
Edge detection vector interrupt input pin (detection of both
rising and falling edges).
Edge detection vector interrupt input pin (detection edge
selectable).
Edge detection testable input pin (rising edge detection)
Clock output pin
System clock oscillation crystal/ceramic connection pin.
When an external clock is used, the clock is input to X1 and
the inverted clock is input to X2.
System reset input pin (low-level active).
Mode selection pin for program memory (PROM) write/
verify.
Positive power supply pin. Applies +6 V for write/verify.
GND potential pin.
Program voltage impression pin for program memory (PROM)
write/verify.
Connected to V
DD
in normal operation.
Applies +12.5 V for PROM write/verify.
After Reset
Input
Input
Input
Input
Input
Input
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PDF描述
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