SA8807A Ver la hoja de datos (PDF) - South African Micro Electronic Systems

Número de pieza

componentes Descripción

Fabricante

SA8807A

96 SEGMENT LIQUID CRYSTAL DISPLAY DRIVER SERIAL (SPI) INTERFACE

South African Micro Electronic Systems 

SA8807A

3. LCD Display

The SA8807A LCD driver is capable of driving a 3 or 4 backplane, 12 digit (7

segment) display, plus decimal points.

In the case of a 4 back plane display, typically the most significant digit is addressed

by columns VS[22] and VS[23] and the least significant digit, by VS[0] and VS[1].

The display segments addressed via the column outputs are given in a typical

configuration below:

The data in memory is constantly being displayed on the liquid crystal display. New

data is displayed as soon as it is latched into memory.

A segment is switched on when the corresponding difference between backplane

VR[ ] and segment VS[ ] outputs is V , and switched off when switched to 1/3 V .

DD

DD

The voltage is alternated to avoid a DC voltage on the LCD (See Diagram 2).

The backplane multiplex rate is determined by the clock/oscillator frequency on the

CLK input.

sames

9/14

Share Link: