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NJU3551

PRELIMINARY

4-BIT SINGLE CHIP OTP MICRO CONTROLLER

s

GENERAL DESCRIPTION

The

NJU3551

is the C-MOS 4-bit Single Chip OTP type

Micro Controller with programmable Flash Memory.

It is completely compatible with the

NJU3501

in function

and the pin configuration. Therefore, the

NJU3551

is

suitable for the final evaluation before

NJU3501

mask

generation, the small quantity production and short lead-

time.

*

In this data sheet, only OTP programming and the

difference between

NJU3551

and

NJU3501

are

mentioned mainly.

Therefore the detail function and specification should

be referred on the

NJU3501

data sheet.

NJU3551D

NJU3551G

s

PACKAGE OUTLINE

s

FEATURES

q

q

q

q

q

Internal One Time Programmable ROM 512 X 8bits

Internal Data RAM

64 X 4bits

Wide operating voltage range

2.7V ~ 5.5V

Package outline

DIP20 / SOP20

ROM programmer 鈥淪UPERPRO/L鈥?by XELTEK co,.

s

PIN CONFIGURATION IN OTP PROGRAMMING MODE

Open

D0

D1

D2

D3

Open

PROM

CLK

REQ

V

SS

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

V

DD

Open

CNT2

CNT1

D7

D6

D5

D4

Open

RESET

Note) The pin configuration in Normal operating mode is the same as

NJU3501.

-1-

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