S1D13700F01A100 Epson, S1D13700F01A100 Datasheet - Page 91

• Manufacturer Part Number: S1D13700F01A100
• Description: Display Drivers LCD CONTROLLER
• Manufacturer: Epson

Specifications of S1D13700F01A100

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: TQFP
• Pin Count: 80
• Mounting: Surface Mount
• Operating Supply Voltage (min): 2.7V
• Lead Free Status / Rohs Status: Supplier Unconfirmed

3: MEMORY MODELS
3.3 4 Bit-Per-Pixel (16 Colors/Gray Shades)
3.4 Eight Bit-Per-Pixel (256 Colors)
2-6
Red bit 2
Pixel 0
Bit 7
Bit 3
Bit 7
Four bit pixels support 16 color/gray shades. In this memory format each byte of display buffer
contains two adjacent pixels. Setting or resetting any pixel requires reading the entire byte, masking
out the upper or lower nibble (4 bits) and setting the appropriate bits to “1”.
Color panels can display up to sixteen colors simultaneously. These sixteen colors are derived by
indexing into the first sixteen elements of the Look-Up Table. Each of these colors may be selected
from the 4096 possible available colors.
components of the LUT. Each of these sixteen possible gray shades can be adjusted to any of the
sixteen possible gray shades. For instance, one could program the first eight green LUT entries to be
0 and the second green LUT entries to be FFh. This would result in nibble values of 0 through 7
displaying as black and nibble values 8 through 0Fh displaying as white.
In eight bit-per-pixel mode one byte of display buffer represents one pixel on the display. At this
color depth the read-modify-write cycles, required by the lessor pixel depths, are eliminated.
When using a color panel, each byte of display memory acts as and index to one element of the LUT.
The displayed color is arrived at by taking the display memory value as an index into the LUT.
Eight bit per pixel is not supported for monochrome display modes. The reason is that each element
of the LUT supports a 4-bit (sixteen value) level for red, green and blue. In monochrome display
modes on the green value is used to set the gray intensity. Thus we have sixteen possible grey values
but, because of the color.
On a monochrome panel the gray shades are generated by indexing into the first sixteen green
Figure 3-3 Pixel Storage for 4 Bpp (16 Colors/Gray Shades) in One Byte of Display Buffer
Red bit 1
Pixel 0
Bit 6
Bit 2
Bit 6
Figure 3-4 Pixel Storage for 8 Bpp (256 Colors) in One Byte of Display Buffer
Red bit 0
Pixel 0
Bit 5
Bit 1
Bit 5
Green bit 2
Pixel 0
Bit 4
Bit 0
Bit 4
EPSON
Green bit 1
Pixel 1
Bit 3
Bit 3
Bit 3
Green bit 0
Pixel 1
Bit 2
Bit 2
Bit 2
S1D13705F00A PROGRAMMING NOTES
AND EXAMPLES (X27A-G-002-01)
Blue bit 1
Pixel 1
Bit 1
Bit 1
Bit 1
Blue bit 0
Pixel 1
Bit 0
Bit 0
Bit 0