IMX28CEC datasheet(45/70 Pages) FREESCALE

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i.MX28 Applications Processors Data Sheet for Consumer Products, Rev. 1

Freescale Semiconductor

3.5.8

LCD AC Output Electrical Specifications

Figure 24 depicts the AC output timing for the LCD module. Table 49 lists the LCD module timing

parameters.

Figure 24. LCD AC Output Timing Diagram

Table 49. LCD AC Output Timing Parameters

Parameter

Description

tSF

Data setup for falling edge

DOTCK = T/2 – 1.97ns + 0.15*Cck – 0.19*Cd

tHF

Data hold for falling edge

DOTCK = T/2 + 0.29ns + 0.09*Cd – 0.10*Cck

tSR

Data setup for rising edge

DOTCK = T/2 – 2.09ns + 0.18*Cck – 0.19*Cd

tHR

Data hold for rising edge

DOTCK = T/2 + 0.40ns + 0.09*Cd – 0.10*Cck

tDW

Data valid window

tDW = T – 1.45ns

PAD_LCD_DOTCK

Falling edge capture

Notes:

T = LCD interface clock period

I/O Drive Strength = 4mA

I/O Voltage = 3.3V

Cck = Capacitance load on DOTCK pad

Cd = Capacitance load on DATA/CTRL pad

PAD_LCD_D[17:0],

PAD_LCD_VSYNC, etc

DATA/CTRL

tDW

tSF

tHF

PAD_LCD_DOTCK

Rising edge capture

tSR

tHR

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