Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 Manuale Utente
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DEMO9S12XHY256
Liquid Crystal Display (LCD40F4BV2) Block Description
MC9S12XHY-Family Reference Manual, Rev. 1.04
546
Freescale Semiconductor
17.1.1
Features
The LCD40F4BV2 includes these distinctive features:
•
Supports five LCD operation modes
•
40 frontplane drivers
•
4 backplane drivers
— Each frontplane has an enable bit respectively
•
Programmable frame clock generator
•
Programmable bias voltage level selector
•
On-chip generation of 4 different output voltage levels
17.1.2
Modes of Operation
The LCD40F4BV2 module supports five operation modes with different numbers of backplanes and
different biasing levels. During wait mode the LCD operation can be suspended under software control.
Depending on the state of internal bits, the LCD can operate normally or the LCD clock generation can be
turned off and the LCD40F4BV2 module enters a power conservation state.
different biasing levels. During wait mode the LCD operation can be suspended under software control.
Depending on the state of internal bits, the LCD can operate normally or the LCD clock generation can be
turned off and the LCD40F4BV2 module enters a power conservation state.
This is a high level description only, detailed descriptions of operating modes are contained in
, and
.
17.1.3
Block Diagram
is a block diagram of the LCD40F4BV2 module.