gp1237ai 320x32 pixel display area 144 x 14 mm gp1212 ai 256x64 pixel display area 115 x 29 mm...
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GP1237AI 320x32 pixel display area 144 x 14 mm
GP1212 AI 256x64 pixel display area 115 x 29 mm
GP1219AI 256x64 pixel display area 164 x 38 mm
• High brightness (700-1250 cd)
• Simple power supply design
• Digital dimming
New Graphic VFD with intelligent CIG controller
BP043GIN 125x85 pixel
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CIG-VFD
DRGraphic
DR
SystemCPU
Graphic ControllerImage composition function
Controller
SystemCPU
Reduce the CPU load to drive VFD ⇒ Reduce system cost
New Graphic Chip-in-Glass Controller
Graphic
CIG-VFD
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Simple Command Flow Chart
send onlyinitialize &BMP data
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Controller Driving Details
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Command Details 1:
Initialize Display(fixed data)
1) Software Reset
2) Clear Memory Map
3) Oscillation Setting (default)
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Command Details 2:
Initialize Display(fixed data)
4) Memory Mode Setting (default)
5) Display Area Setting (default)
6) Display Area Setting (default)
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Command Details 3:
Dimming
Command Format
2nd Dimming Data
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Command Details 4:
Memory MapDisplay Data Write
2nd: Memory Map X Start Position
3rd: Memory Map Y Start Position
Command Format
4th: Memory Map Display Height
5th~: BMP data
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Command Details 5:
Display Position
1st Digital Window Selection
2nd Digital Window X Start Position
Command Format
3rd Digital Window Y Start Position
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Command Details 6:
Display Mode Settings
Command Format
2nd Display Mode Commands
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VFD Power Supply Methods
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Power Supply Solution 1: Royer circuit
Advantage: low component cost & high input voltage possible
Disadvantage: custom designed transformer required
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Power Supply Solution 2: For small Displays
Advantage: only standard components required
Disadvantage: higher component cost & max. 5Vdc input
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Power Supply Solution 2: For small Displays (low voltage)
LM9022 Voltage Multiplier for Anode/Grid voltage
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Power Supply Solution 2:
For small Displays(high voltage)
LM9022
MC34063
Disadvantage:
higher component cost
& max. 5Vdc input
Advantage:
only standard
components required
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Power Supply Solution 3: For large Displays
Advantage: only standard components required
Anode/Grid Voltage Filament Voltage
Disadvantage: higher component cost & max. 5Vdc input
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Cut-off Bias Requirement (Ek)
Background: Electron Leakage