upd17p401 ETC-unknow, upd17p401 Datasheet - Page 21

• Manufacturer Part Number: upd17p401
• Description: One-time Prom Version 4-bit Single Chip Microcontroller With Dedicated On-chip Camera Hardware
• Manufacturer: ETC-unknow

3.3
(1) Unused pins are connected to GND with a pull-down resistor. The CLK pin is driven low.
(2) 5 V is supplied to the V
(3) 5 V is supplied to the V
(4) The mode setting pin is set to the program memory address zero-clear mode.
(5) 6 V is supplied to V
(6) Program inhibit mode.
(7) Verify mode. When clock pulses are input to the CLK pin, data is output sequentially, one address
(8) Program inhibit mode.
(9) Program memory address zero-clear mode.
(10) V
(11) Power OFF.
V
V
DD
PP
Steps (2) to (9) of this procedure are shown in the following Figure.
per 4-input cycle.
V
D0-D7
PROGRAM MEMORY READ PROCEDURE
DD
DD
MD0
MD1
MD2
MD3
GND
GND
CLK
V
V
V
+ 1
/V
DD
DD
PP
PP
pin voltage is changed to 5 V.
“L”
DD
, 12.5 V to V
DD
PP
pin after a 10 s wait.
pin. The V
PP
.
Data Output
PP
pin is driven low.
Data Output
PD17P401
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