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NJU3555

4-BIT SINGLE CHIP OTP MICRO CONTROLLER

Japan Radio Corporation  

NJU3555

s TERMINAL DESCRIPTION IN OTP PROGRAMMING MODE

No.

NJU NJU

3555F 3555L

7

10

25, 26,

28-31,

34, 35

1

2

10

9

8

18, 33

11, 12

28, 29,

31-34,

37, 38

40,

41

13

12

11

21, 36

14, 15

SYMBOL

RESET

D0 - D7

CNT1

CNT2

REQ

CLK

PROM

VDD

VSS

INPUT /

OUTPUT

INPUT

FUNCTION

RESET terminal.

When the low-level input-signal, the system is initialized.

INPUT/OUTPUT Data bus

INPUT

INPUT

OUTPUT

INPUT

INPUT

-

-

OTP control input terminal

Request output terminal

Clock input terminal

OTP programming enable terminal

Power Source (5V)

Power Source (0V)

Note 1) Use at VDD=5V in OTP programming mode.

2) Non connect anything to the other terminals.

-3-

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