NJU6635 datasheet(5/33 Pages) NJRC

Part #	NJU6635

Description	16-CHARACTER 2-LINE DOT MATRIX LCD CONTROLLER DRIVER

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Manufacturer	NJRC [New Japan Radio]

Direct Link	http://www.jrc.co.jp/eng/index.html

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5 / 33 page

NJU6635

s TERMINAL DESCRIPTION

PAD No.

A mode

B mode

SYMBOL

I/O

F U N C T I O N

4 – 9

VDD, VSS

–

Power Source : VDD = +5V, GND : VSS = 0V

10 – 14

V2, V3, V5

–

LCD driving Power Source

2

OSC1

I

Oscillation Frequency Adjustment Terminals.

Normally Open.

(Oscillation C and R are Incorporated, Osc Freq.=540kHZ)

3

OSC2

O

Oscillation Frequency Adjustment Terminals.

Normally Open.

This terminal also operates as the clock frequency monitor.

16

RS

I

Resister selection signal Input

"0":Instruction Resister (Writing)

Busy Flag

(Reading)

"1":Data Register (Writing / Reading)

17

R/W

I

Read/Write selection signal Input

"0":Write "1":Read

18

E

I

Read/write activation Signal Input

26 – 23

DB7 – DB4

I/O

3-state Data Bus(Upper) to transfer the data between MPU and

NJU6635.

DB7 is also used for the Busy Flag reading.

19 – 22

DB3 – DB0

I/O

3-state Data Bus(Lower) to transfer the data between MPU and

NJU6635.

In serial and 4bit parallel mode, these terminals are not used

and should be open.

32 – 39,

126 – 133

133 – 126,

39 – 32

COM1 –

COM16

O

LCD Common driving signal Terminals

43 – 122

122 – 43

SEG1 –

SEG80

O

LCD segment driving signal Terminals

15

RESET

I

Reset Terminal.

When the “L” level Input over than 1.2ms to

this terminal, the system will be reset.(fOSC=540kHz)

1,

27 – 31,

40 – 42,

123 – 125,

134 – 137

1,

27 – 31,

40 – 42,

123 – 125,

134 – 137

DUMMY1

–

DUMMY15

O

Dummy Terminal

These terminals are electrically open.

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