ST7528 Sitronix, ST7528 Datasheet - Page 33

• Manufacturer Part Number: ST7528
• Description: 16 Gray Scale Dot Matrix LCD Controller
• Manufacturer: Sitronix

ST7528
LCD DISPLAY CIRCUITS
FRC (Frame Rate Control) and PWM (Pulse Width Modulation) Function Circuit
The ST7528 incorporates an FRC function and a PWM function circuit to display a 16-level gray scale. The FRC function
and PWM utilize liquid crystal characteristics whose transmittance is changed by an effective value of applied voltage. The
ST7528 provides palette-registers to assign the desired gray level. These registers are set by the instructions and the
RESETB.
ST7528-- 4FRC & 3FRC / 45PWM, 60PWM
4 FRC setting
1st FR (FR1)
1st FR (FR1)
2nd FR (FR2)
2nd FR (FR2)
3rd FR (FR3)
3rd FR (FR3)
4th FR (FR4)
4th FR (FR4)
3 FRC setting
1st FR (FR1)
1st FR (FR1)
2nd FR (FR2)
2nd FR (FR2)
3rd FR (FR3)
3rd FR (FR3)
4th FR (FR4)
4th FR (FR4)
Ver2.3
Gray Scale Table of 4 FRC (Frame Rate Control)
Gray Scale Table of 3 FRC (Frame Rate Control)
(DB7 to DB0)
Set 1
Set 1
Set 2
Set 2
Set 3
Set 3
Set 4
Set 4
(DB7 to DB0)
Set 1
Set 1
Set 2
Set 2
Set 3
Set 3
No used
No used
st
st
nd
nd
rd
rd
th
th
st
st
nd
nd
rd
rd
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
Frame Pulse Width Modulation Instruction
Frame Pulse Width Modulation Data
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