AN2405 Freescale Semiconductor / Motorola, AN2405 Datasheet - Page 2

• Manufacturer Part Number: AN2405
• Description: Supplemental Information for LCD Interfacing for the MC9328MX1 Application Processor Application Note
• Manufacturer: Freescale Semiconductor / Motorola

LCDC Pins and Signals
2
The i.MX interface pins for the LCDC are 3.0V +/- 10% capable. Refer to the i.MX reference manual and your
panel’s specifications regarding electrical compatibility with the i.MX processor’s interface pins. The Figure 1
shows the i.MX processor’s LCD pins and signal name assignments.
2
Mono
chrome
CSTN
TFT
Note: * Using external memory, actual panel size depends on system bandwidth use. Also take into consideration erratums
7 and 11 since the usage of higher resolution panels augments the chance of incidence of these erratums
Note: ** Using internal memory, eSRAM
Note: *** BPP = Bits Per Pixel
Panel Type BPP
LCDC Pins and Signals
12
12
16
1
2
4
4
8
4
8
Interface
1,2,4,8
1,2,4,8
1,2,4,8
i.MX Supplemental Information for LCD Interfacing Application Note, Rev. 1.1
Panel
(bits)
12
12
12
16
8
8
8
2 level black and white
4 gray scale levels
16 gray scale levels
16 color levels
256 color levels
4096 color levels
16 color levels
256 color levels
4096 color levels
65,536 color levels
Number of Levels
Table 1. i.MX Processor Panel Support
640 x 480*
640 x 480**
640 x 480*
640 x 480**
640 x 480*
320 x 240 or
240 x 320**
320 x 240 or
240 x 320**
320 x 240 or
240 x 320**
320 x 240 or
240 x 320**
640 x 480*
320 x 240 or
240 x 320**
640 x 480*
320 x 240 or
240 x 320**
640 x 480*
240 x 160 or
160 x 240**
640 x 480*
240 x 160 or
160 x 240**
Max. Panel
(pixels)
Size
1. Palette RAM is not used.
1. Palette RAM is not used.
2. Black is one shade, white is one shade, two
1. Palette RAM is used.
2. 16 four-bit values are programmed into the first 16
1. Palette RAM is used.
2. 16 colors can be selected out of a palette of 4096
3. 16 twelve-bit values are programmed into first 16
1. Palette RAM is used.
2. 256 colors can be selected out of a palette of
3. 256 twelve-bit values are programmed into the
1. Palette RAM is not used.
1. Palette RAM is used.
2. 16 colors can be selected out of a palette of 4096
3. 16 twelve-bit values are programmed into first 16
1. Palette RAM is used.
2. 256 colors can be selected out of a palette of
3. 256 twelve-bit values are programmed into the
1. Palette RAM is not used.
1. Palette RAM is not used.
remaining shades are programmable in LGPMR
LCD Gray Palette Mapping Register.
entries of the palette RAM.
different colors.
entries of the palette RAM.
4096 different colors.
palette RAM.
different colors.
entries of the palette RAM.
4096 different colors.
palette RAM.
Palette Ram Usage
Freescale Semiconductor