參數(shù)資料
型號(hào)： UPD17P207GF-001-3B9
元件分類： 微控制器/微處理器
英文描述： 4-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, PLASTIC, QFP-80
文件頁(yè)數(shù)： 9/34頁(yè)
文件大小： 311K
代理商： UPD17P207GF-001-3B9
PD17P207
15
2.3
PROGRAM MEMORY READ PROCEDURE
(1) Ground the unused pins through pull-down resistors. The CLK pin must be low.
(2) Supply 5 V to the VDD pin. The VPP pin must be low.
(3) After waiting for 10
s, supply 5 V to the VPP pin.
(4) Operate the MD0 to MD3 pins to set program memory address 0 clear mode.
(5) Supply 6 V to the VDD pin and 12.5 V to the VPP pin.
(6) Set program inhibit mode.
(7) Set verify mode. Data of each address is sequentially output each time a clock pulse is input to the CLK pin
four times.
(8) Set program inhibit mode.
(9) Set program memory address 0 clear mode.
(10) Change the voltages of VDD and VPP pins to 5 V.
(11) Turn off the power supply.
Steps (2) to (9) are illustrated below.
VPP
VDD
GND
VDD+1
VDD
GND
CLK
VPP
VDD
Data output
“L”
1 cycle
D -D
0
7
MD0
MD1
MD2
MD3
Reset
Hi-z
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參數(shù)描述
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UPD17P207GF-3B9 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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