Datasheet

ST7735
V1.7 37 2009-12-04
9.7 Data Color Coding
9.7.1 8-bit Parallel Interface (IM2, IM1, IM0= “100”)
Different display data formats are available for three Colors depth supported by listed below.
- 4k colors, RGB 4,4,4-bit input.
- 65k colors, RGB 5,6,5-bit input.
- 262k colors, RGB 6,6,6-bit input.
9.7.2 8-bit data bus for 12-bit/pixel (RGB 4-4-4-bit input), 4K-Colors, 3AH= “03h”
R1, Bit 3 B1, Bit 3 G2, Bit 3 R3, Bit 30
R1, Bit 2 B1, Bit 2 G2, Bit 2 R3, Bit 20
R1, Bit 1 B1, Bit 1 G2, Bit 1 R3, Bit 11
R1, Bit 0 B1, Bit 0 G2, Bit 0 R3, Bit 00
G1, Bit 3 R2, Bit 3 B2, Bit 3 G3, Bit 31
G1, Bit 2 R2, Bit 2 B2, Bit 2 G3, Bit 21
G1, Bit 1 R2, Bit 1 B2, Bit 1 G3, Bit 10
G1, Bit 0 R2, Bit 0 B2, Bit 0 G3, Bit 00
8080-series control pins
RESX
IM[2:0]
CSX
D/CX
“1 ”
“1 ”“1 ”
“1 ”
“
““
“100”
””
”
WRX
RDX
“
““
“1”
””
”
D7
D6
D5
D4
D3
D2
D1
D0
Pixel n Pixel n+1
Look-up table for 4096 color data mapping (12 bits to 18 bits)
12 bits 12 bits
R1 G1 B1 R2 G2 B2 R3 G3 B3
18 bits
Frame memory
Note 1: The data order is as follows, MSB=D7, LSB=D0 and picture data is MSB=Bit 3, LSB=Bit 0 for Red, Green and Blue data.
Note 2: 3-time transfer is used to transmit 1 pixel data with the 12-bit color depth information.
Note 3: ‘-‘ = Don't care - Can be set to '0' or '1'