MC9S12HY64 Datasheet, PDF (664/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Liquid Crystal Display (LCD40F4BV1) Block Description
• 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
18.1.2 Modes of Operation
The LCD40F4BV1 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 LCD40F4BV1 module enters a power conservation state.
This is a high level description only, detailed descriptions of operating modes are contained in
Section 18.4.2, “Operation in Wait Mode”, and Section 18.4.3, “Operation in Stop Mode”.
18.1.3 Block Diagram
Figure 18-1 is a block diagram of the LCD40F4BV1 module.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
664
Freescale Semiconductor