S1D13700F01A100 Epson, S1D13700F01A100 Datasheet - Page 93

• 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

4: LOOK-UP TABLE (LUT)
4.1 Look-Up Table Registers
4.2 Look-Up Table Organization
Color Modes
2-8
REG[15h] Look-Up Table Address Registe
REG[17h] Look-Up Table Data Register
LUT Address
LUT Data
Bit 7
Bit 3
LUT Address
The LUT address register selects which of the 256 LUT entries will be accessed. After three
successive reads/writes to the data register this register is automatically incremented to point to the
next address.
LUT Data
This register is where the 4-bit red/green/blue data value is written/read. Immediately after setting
the LUT index with register [15h] this register accesses the red element of the Look-Up Table. With
each successive write/read the internal bank select is incremented. Thus the second access is from
the green element and the third is from the blue element.
After the third access the LUT Address is incremented by one, then next access to this register will
be the red element of the next Look-Up Table index.
1 bpp color
When the S1D13705 is configured for 1 bpp color mode, the LUT is limited to selecting colors from
the first two entries. The two LUT entries can be any two RGB values but are typically set to black-
and-white.
Each byte in the display buffer contains eight adjacent pixels. If a bit has a value of “0” then the
color in LUT 0 index is displayed. A bit value of “1” results in the color in LUT 1 index being
displayed.
The following table shows the recommended values for obtaining a black-and-white mode while in
1 bpp on a color panel.
LUT Address
LUT Data
Bit 6
Bit 2
Table 4-1 Recommended LUT Values for 1 Bpp Color Mode
LUT Address
LUT Data
Bit 5
Bit 1
Index
FF
00
01
02
...
LUT Address
LUT Data
unused entries
Bit 4
Bit 0
Red
F0
00
00
00
00
EPSON
LUT Address
Green
Bit 3
n/a
F0
00
00
00
00
LUT Address
Blue
F0
00
00
00
00
Bit 2
n/a
S1D13705F00A PROGRAMMING NOTES
AND EXAMPLES (X27A-G-002-01)
LUT Address
Bit 1
n/a
LUT Address
Read/Write
Read/Write
Bit 0
n/a