Epson S1C33L03 用户手册

In grayscale mode, the LCD controller uses only the green look-up table. For display in grayscale mode,

select the data to be written to the look-up table from the 16 gray levels represented by 4 bits. The data 0x0,

0x1, 0x8, and 0xF represent black, 93.75% gray, 50% gray, and white, respectively. The differences in

configuration between display modes are shown below.

Use the first two entries of the green look-up table. Select two pieces of data from the 16 gray levels, and

write them to the respective entries. The data in entry 0 is output for pixel data "0", and the data in entry 1 is

output for pixel data "1". For monochrome display, write 0x0 to entry 0 and 0xF to entry 1 before using the

LCD panel.

1-bit pixel data

"0"
"1"

4-bit display data

Green look-up table

Index

Unused

0

1

2

:

15

4-bit grayscale data for pixel data "0"

4-bit grayscale data for pixel data "1"

Figure 2.9  Look-up Table in 1-bpp (2-Gray-Level) Mode

Table 2.6 shows an example of the basic data setting.

Table 2.6  Example of Look-up-Table Settings in 1-bpp (2-Gray-Level) Mode

0

0

0

0

1

0

0xF

0

2–15

0

0

0

Use the first four entries of the green look-up table. Select four pieces of data from the 16 gray levels, and

write them to the respective entries. The data in entry 0 is output for pixel data "00", and the data in entry 3 is

output for pixel data "11".

4-bit grayscale data for pixel data "00"

4-bit grayscale data for pixel data "01"

4-bit grayscale data for pixel data "10"

4-bit grayscale data for pixel data "11"

2-bit pixel data

"00"
"01"
"10"
"11"

4-bit display data

Green look-up table

Index

Unused

0

1

2

3

4

:

15

Figure 2.10  Look-up Table in 2-bpp (4-Gray-Level) Mode

Table 2.7 shows an example of the basic data setting.

Table 2.7  Example of Look-up-Table Settings in 2-bpp (4-Gray-Level) Mode

0

0

0

0

1

0

5

0

2

0

0xA

0

3

0

0xF

0

4–15

0

0

0