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NJU3555 Datasheet(PDF) 3 Page - New Japan Radio

Part No. NJU3555
Description  4-BIT SINGLE CHIP OTP MICRO CONTROLLER
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Maker  NJRC [New Japan Radio]
Homepage  http://www.njr.co.jp/index_e.htm
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NJU3555 Datasheet(HTML) 3 Page - New Japan Radio

 
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NJU3555
- 3 -
s TERMINAL DESCRIPTION IN OTP PROGRAMMING MODE
No.
NJU
3555F
NJU
3555L
SYMBOL
INPUT /
OUTPUT
F U N C T I O N
7
10
RESET
INPUT
RESET terminal.
When the low-level input-signal, the system is initialized.
25, 26,
28-31,
34, 35
28, 29,
31-34,
37, 38
D0 - D7
INPUT/OUTPUT Data bus
1
40,
CNT1
INPUT
2
41
CNT2
INPUT
OTP control input terminal
10
13
REQ
OUTPUT
Request output terminal
9
12
CLK
INPUT
Clock input terminal
8
11
PROM
INPUT
OTP programming enable terminal
18, 33
21, 36
VDD
-
Power Source (5V)
11, 12
14, 15
VSS
-
Power Source (0V)
Note 1)
Use at VDD=5V in OTP programming mode.
2)
Non connect anything to the other terminals.


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