SPFD54124B Drise, SPFD54124B Datasheet - Page 206

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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7.16. Oscillator
The chip has on-chip oscillator that does not require external components. This oscillator output signal is used for system clock generation
for internal display operation.
7.17. System Colck Generator
The timing generator produces the various signals to dirver the internal circuitty. Internal chip operation is not affected by operations on the
data bus.
7.18. Instruction Decoder and Register
The instruction decoder indentifies command words arriving at the interface and routes the following data bytes to their destination. The
command set can be found in “ Command” section.
7.19. Source Driver
The source driver block includes 132x3 source outputs (S1 to S396), which should be connected directly to the TFT-LCD. The source
output signals are generated in the data processing block after the data is read out of the RAM and latched, which represent the
simulatance selected rows.
7.20. Gate Driver
The gate dirver block include 160 chanel gate output (G1 to G162) which should be connected directly to the TFT-LCD.
7.20.1. Gate Driver
7.21. γ-CORRECTION FUNCTION
The SPFD54124B adopts true 6-bit OP-AMP with adjustable γ -correction function to display in 262,144 colors. The adjustable γ
-correction can be set by 14 groups of registers to determine eight reference grayscale levels, which are gradient adjustment, amplitude
adjustment and fine-adjustment registers. Each register group can be set independently to other register groups.
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S1-S396
G10
G11
G12
G1
G2
G3
G4
G5
G6
G7
G8
G9
1
2
3
Fig. 7.20.1 Gate Driver Output Option 1
4
5
6
206
7
8
VGH
9
VGL
10
11
SPFD54124B
Preliminary
12
Preliminary Version: 0.6
APR. 26, 2007