ST7528 Sitronix, ST7528 Datasheet - Page 45

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

ST7528
RESET CIRCUIT
Setting RESETB to “L” or Reset instruction can initialize internal function.
When RESETB becomes “L”, following procedure is occurred.
Page address: 0
Column address: 0
Read-modify-write: OFF
Display ON / OFF: OFF
Initial display line: 0 (first)
Initial COM0 register: 0 (COM0)
Partial display ratio: 1/128
Reverse display ON / OFF: OFF (normal)
N-line inversion register: 0 (disable)
Entire Display ON/OFF: OFF
ICON Control register ON/OFF: OFF (ICON disable)
Power control register (VC, VR, VF) = (0, 0, 0)
DC-DC converter circuit = (0, 0)
Booster Efficiency BE = (1)
Regulator resistor select register: (R2, R1, R0) = (0, 0, 0)
Contrast Level: 32
LCD bias ratio: 1/12
COM Scan Direction: 0
ADC Select: 0
Oscillator: OFF
Power Save Mode: Release
Display Data Length register: 0 (for SPI mode)
All Gray Level Set : OFF
In Level0, 2, 4, 6, 8, 10, 12, 14 , the Gray Level palette register (GA5, GA4, GA3, GA2, GA1, GA0) = (0,0,0,0,0)
All Gray Level Set : OFF
In Level1, 3, 5, 7, 9, 11, 13, 15, the Gray Level palette register (GA5, GA4, GA3, GA2, GA1, GA0) = (1,1,1,1,1)
FRC, PWM mode: 4FRC, 45PWM
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When RESET instruction is issued, following procedure is occurred.
Page address: 0
Column address: 0
Read-modify-write: OFF
Initial display line: 0 (First)
Regulator resistor select register: (R2, R1, R0) = (0, 0, 0)
Contrast Level: 32
Display Data Length register: 0 (for SPI mode)
All Gray Level Set : OFF
In Level0, 2, 4, 6, 8, 10, 12, 14 , the Gray Level palette register (GA5, GA4, GA3, GA2, GA1, GA0) = (0,0,0,0,0)
All Gray Level Set : OFF
In Level1, 3, 5, 7, 9, 11, 13, 15, the Gray Level palette register (GA5, GA4, GA3, GA2, GA1, GA0) = (1,1,1,1,1)
FRC, PWM mode: 4FRC, 45PWM
While RESETB is “L” or reset instruction is executed, no instruction except read status can be accepted. Reset status
appears at DB4. After DB4 becomes ”L”, any instruction can be accepted. RESETB must be connected to the reset pin of
the MPU, and initialize the MPU and this LSI at the same time. The initialization by RESETB is essential before used.
Ver2.3
45/97
2007/1/3
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