ST7586S datasheet(13/63 Pages) SITRONIX

13 / 63 page

ST7586S

Ver-1.1a

13/63

2009/11/30

LCD Driver Outputs

Name

Type

Description

SEG0

SEG383

Output

LCD SEG-driver outputs.

The display data and the polar-signal (M) control the output voltage of SEG-driver.

Segment Driver Output Voltage

Display Data

Normal Display

Reverse Display

VSS

Display OFF, Sleep-In mode

VSS

COM0

COM159

Output

LCD COM-driver outputs.

The internal scanning data and the polar-signal (M) control the output voltage of COM-driver.

Scan data

Common Driver Output Voltage

XV0

Display OFF, Sleep-In mode

VSS

Microprocessor Interface

Name

Type

Description

RSTB

Input

Reset input pin. When RSTB is “L”, internal initialization procedure is executed.

IF[3:1]

Input

These pins select interface operation mode.

IF3

IF2

IF1

MPU interface type

80 series 8-bit parallel

68 series 8-bit parallel

8-bit serial (4-Line)

9-bit serial (3-Line)

Note: Refer to “Interface Selection” for detailed information.

CSB

Input

Chip select input pin.

CSB=“L”: This chip is selected and the MPU interface is active.

CSB=“H”: This chip is not selected and the MPU interface is disabled (D[7:0] are high impedance).

Input

The function of this pin is different in parallel and serial interface.

In parallel interface: A0 is register selection input.

A0 = "H": inputs on data bus are display data;

A0 = "L": inputs on data bus are command.

In serial interface: this pad will be used as SCL (serial-clock) input

RWR

Input

Read / Write execution control pin. (This pin is only used in parallel interface)

MPU Type

RWR

Description

6800-series

R/W

Read / Write control input pin

R/W = “H” : read

R/W = “L” : write

8080-series

/WR

Write enable clock input pin.

The data are latched at the rising edge of the /WR signal.

This pin is not used in serial interfaces and should be connected to VDD1.

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