ST7070 데이터 시트보기 (PDF) - Sitronix Technology Co., Ltd.

부품명

상세내역

제조사

ST7070

Dot Matrix LCD Controller/Driver

Sitronix Technology Co., Ltd. 

ST7070

Pin Function

Name

RS

R/W

E

XRESET

PSB

DB4 to DB7

DB0 to DB3

CL1

CL2

M

D

COM1 to

COM16

SEG1 to

SEG80

V0 to V4

Number

1

1

1

1

1

4

4

1

1

1

1

16

80

5

I/O

Interfaced

with

Function

Select registers.

0: Write Instruction or “Read Busy Flag and Address”

I

MPU

1: Data write/read

It is not used in 3-Line SPI interface, fix RS at low, not floating.

Select read or write.

I

MPU

0: Write 1: Read

When serial interface select ,R/W pull low, not floating.

I

MPU

Starts data read/write.

When serial interface select ,E pull height , not floating.

I

MPU

Hardware reset pin, Low active

I

MPU

Parallel /Serial selection. PSB: ”1” Parallel , “0” Serial.

Four high order bi-directional tristate data bus pins. Used for

data transfer and receive between the MPU and the ST7070.

DB7 can be used as a busy flag.

Serial:

I/O

MPU

DB7:data input pin for serial mode(SI)

DB6:serial clock input for serial mode(SCL)

DB5:chip select pin for serial mode(/CS)

When serial interface select ,D4 pull height , not floating.

4bits mode : These pins are used during 4-bit operation.

Four low order bi-directional tristate data bus

pins. Used for data transfer and receive

I/O

MPU

between the MPU and the ST7070.

These pins are not used during 4-bit operation and serial

interface , must pull height , not floating.

Clock to latch serial data D sent to the

O Extension driver Extension driver

O Extension driver Clock to shift serial data D

Switch signal for converting the liquid crystal

O Extension driver drive waveform to AC

Character pattern data corresponding to each

O Extension driver segment signal

Common signals that are not used are changed

to non-selection waveform. COM9 to COM16

O

LCD

are non-selection waveforms at 1/8 duty factor

and COM12 to COM16 are non-selection

waveforms at 1/11 duty factor.

Segment signals

O

LCD

Power supply for LCD drive

-

Power supply V0 － Vss = 10 V (Max)

VCC , GND

2

-

Power supply VCC : 2.7V to 5.5V, GND: 0V

OSC1, OSC2

2

Oscillation

resistor clock

When crystal oscillation is performed, a resistor

must be connected externally. When the pin

input is an external clock, it must be input to OSC1.

Note:

1. V0 >= V1 >= V2 >= V3 >= V4 >= Vss must be maintained

2. Two clock options:

R=91KΩ(Vcc=5V)

R=75KΩ(Vcc=3V)

OSC1

OSC2

OSC1

OSC2

R

Clock input

V1.4

7/51

2009/04/29

Share Link: