SSD1858 데이터 시트보기 (PDF) - Solomon Systech

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SSD1858

LCD Segment / Common Driver with Controller CMOS

Solomon Systech  

6

PIN DESCRIPTION

6.1 RES#

This pin is reset signal input. When the pin is low, initialization of the chip is executed.

6.2 PS0

This pin uses together with PS1 to determine the interface protocol between the driver and MCU.

Refer to PS1 pin descriptions for more details.

6.3 PS1

This pin uses together with PS0 to determine the interface protocol between the driver and MCU

according to the following table.

Table 3 - PS0 & PS1 Interface

PS0

PS1 Interface

L

L

3-wire SPI (write only)

L

H

4-wire SPI (write only)

H

L

8080 parallel interface (read and write allowed)

H

H

6800 parallel interface (read and write allowed)

6.4 CS#

This pin is chip select input. The chip is enabled for display data/command transfer only when CS# is

low.

6.5 D/C#

This input pin is to identify display data/command cycle. When the pin is high, the data written to the

driver will be written into display RAM. When the pin is low, the data will be interpreted as command.

6.6 R/W(WR#)

This pin is microprocessor interface signal. When interfacing to an 6800-series microprocessor, the

signal indicates read mode when high and write mode when low. When interfacing to an 8080-

microprocessor, a data write operation is initiated when R/W(WR#) is low and the chip is selected.

6.7 E(RD#)

This pin is microprocessor interface signal. When interfacing to an 6800-series microprocessor, a data

operation is initiated when E(RD#) is high and the chip is selected. When interfacing to an 8080-

microprocessor, a data read operation is initiated when E(RD#) is low and the chip is selected.

6.8 D0 -D7

These pins are 8-bit bi-directional data bus to be connected to the microprocessor’s data bus. When

serial mode is selected, D7 is the serial data input SDA and D6 is the serial clock input SCK.

6.9 VDD

Power supply pin.

9

SSD1858

Rev 1.1

09/2002

SOLOMON

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