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KS2508

Features: • 256 ROM fonts (Each font consists of 12 x 18 dots.)• Full Screen Memory Architecture• Wide range PLL available (15 kHz ~ 120 kHz)• Programmable vertical height of character• Programmable vertical and horizontal positioning• Character color selection ...

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SeekIC No. : 004387486 Detail

KS2508: Features: • 256 ROM fonts (Each font consists of 12 x 18 dots.)• Full Screen Memory Architecture• Wide range PLL available (15 kHz ~ 120 kHz)• Programmable vertical height of...

KS2508 Data Sheet

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Part Number:
KS2508
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 256 ROM fonts (Each font consists of 12 x 18 dots.)
• Full Screen Memory Architecture
• Wide range PLL available (15 kHz ~ 120 kHz)
• Programmable vertical height of character
• Programmable vertical and horizontal positioning
• Character color selection up to 16 different colors
• Programmable background color (Up to 16 colors)
• Character blinking, bordering and shadowing
• Color blinking
• Character scrolling
• Fade-in and fade-out
• Box drawing
• Character sizing up to four times
• 96 MHz pixel frequency from on-chip PLL
• IIC Protocol Data Transmission (Slave Address : BAH)


Pinout

Connection Diagram


Specifications

Parameters
Symbol
Value
Unit
Min.
Typ.
Max.
Maximum Supply Voltage
VDD
-
-
7.0
V
Input Voltage
VI
-
-
7.0
V
Operating Temperature Range
TOPR
-20
-
70
Storage Temperature Range
TSTG
-40
125
Power Dissipation
PD
-
-
1200
mW

NOTE: PKG Thermal Resistance : 64.2/W


Description

The KS2508 is used to display some characters or symbols on a screen of monitor. Basically, the operation is to control the internal memory on chip and generate the R,G,B signals for some characters or symbols. The R,G,B signals are synchronized  with the horizontal sync. Then the R,G,B signals are mixed with the main video signal in the Video Amp IC.

The font data for characters or symbols of KS2508 are stored in the internal ROM. This stored data are accessed and controlled by the control data from a micro controller. The control data are transmitted through the I2C bus. All timing control signals including the system clock are synchronized with the horizontal sync.

Therefore there is a PLL circuitry on chip.




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