參數(shù)資料
型號(hào)： UPD6P4B
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
中文描述： 4位單片機(jī)的紅外遙控傳輸
文件頁(yè)數(shù)： 14/32頁(yè)
文件大小： 187K
代理商： UPD6P4B
14
μ
PD6P4B
Data Sheet U13594EJ2V0DS00
3.3 Program Memory Reading Procedure
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Pull down the pins not used to GND via resistor. Keep the CLK pin low.
Supply 5 V to the V
DD
pin. Keep the V
PP
pin low.
Supply 5 V to the V
PP
pin after waiting for 10
μ
s.
Wait for 2 ms until oscillation of the ceramic resonator connected across the X
IN
and X
OUT
pins stabilizes.
Set the program memory address 0 clear mode by using the mode setting pins.
Supply 6 V to V
DD
and 12.5 V to V
PP
.
Set the program inhibit mode.
Set the verify mode. Data of each address is output sequentially each time the clock pulse is input to
the CLK pin four times.
Set the program inhibit mode.
(10) Set the program memory address 0 clear mode.
(11) Change the voltage on the V
DD
and V
PP
pins to 5 V.
(12) Turn off power.
(9)
The following figure illustrates steps (2) through (10) above.
Reset
Oscillation stabilization
wait time
Hi-Z
Hi-Z
V
PP
V
DD
GND
V
DD
+1
V
DD
GND
CLK
V
PP
V
DD
D
0
-D
7
MD
0
MD
1
MD
2
MD
3
Data output
Data output
"L"
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