Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
Liquid Crystal Display (LCD40F4BV2) Block Description
MC9S12XHY-Family Reference Manual, Rev. 1.04
548
Freescale Semiconductor
17.2
External Signal Description
The LCD40F4BV2 module has a total of 45 external pins.
17.2.1
BP[3:0] — Analog Backplane Pins
This output signal vector represents the analog backplane waveforms of the LCD40F4BV2 module and is
connected directly to the corresponding pads.
connected directly to the corresponding pads.
17.2.2
FP[39:0] — Analog Frontplane Pins
This output signal vector represents the analog frontplane waveforms of the LCD40F4BV2 module and is
connected directly to the corresponding pads.
connected directly to the corresponding pads.
17.2.3
VLCD — LCD Supply Voltage Pin
Positive supply voltage for the LCD waveform generation.
17.3
Memory Map and Register Definition
This section provides a detailed description of all memory and registers.
17.3.1
Module Memory Map
The memory map for the LCD40F4BV2 module is given in
. The address listed for each register
is the address offset. The total address for each register is the sum of the base address for the
LCD40F4BV2 module and the address offset for each register.
LCD40F4BV2 module and the address offset for each register.
Table 17-2. Signal Properties
Name
Port
Function
Reset State
4 backplane waveforms
BP[3:0]
Backplane waveform signals
that connect directly to the pads
that connect directly to the pads
High impedance
40 frontplane waveforms
FP[39:0] Frontplane waveform signals
that connect directly to the pads
High impedance
LCD voltage
VLCD
LCD supply voltage
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