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74798M

Features: • Display format: 24 characters by 12 rows (Up to 288characters)• Character format: 12 (horizontal) ´ 18 (vertical) dots• Character sizes: Three sizes each in the horizontal andvertical directions• Characters in font: 128• Initial display positions: 64...

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SeekIC No. : 004248582 Detail

74798M: Features: • Display format: 24 characters by 12 rows (Up to 288characters)• Character format: 12 (horizontal) ´ 18 (vertical) dots• Character sizes: Three sizes each in the h...

74798M Data Sheet

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Part Number:
74798M
Supply Ability:
5000

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

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Upload time: 2024/5/15

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Product Details

Description



Features:

• Display format: 24 characters by 12 rows (Up to 288characters)
• Character format: 12 (horizontal) ´ 18 (vertical) dots
• Character sizes: Three sizes each in the horizontal and
vertical directions
• Characters in font: 128
• Initial display positions: 64 horizontal positions and 64 vertical positions
• Blinking: Specifiable in character units
• Blinking types: Two periods supported: 1.0 second and 0.5 second
• Blanking: Over the whole font (12 ´ 18 dots)
• Background color
- 8 colors (internal synchronization mode): 4fSC
- 6 colors (internal synchronization mode): 2fSC
- Blue background only: NTSC
• Line background color
- Three lines can be set up.
- 8 line background colors (in internal synchronizationmode): 4fSC
- 6 line background colors (in internal synchronizationmode): 2fSC
• External control input: 8-bit serial input format
• On-chip sync separator and AFC circuits
• On-chip PDC/VPS/UDT interface circuit
• Video outputs: PAL and NTSC format composite video outputs
• Package: DIP30SD (400 mil) MFP30S (375 mil)


Pinout

Connection Diagram


Specifications


Parameter
Rating
SYMBOL
 UNIT Conditions
Supply voltage
VSS 0.3 to VSS + 7.0
VDD
V
VDD1 and VDD2
Input voltage
VSS 0.3 to VDD + 0.3
VIN
V
All input pins
Output voltage
VSS 0.3 to VDD + 0.3
VOUT
V
DAV, DOUT, SEPOUT, and SYNCJDG
Allowable power dissipation
350
Pd max j
mW
Ta = 25°C
Operating temperature

30 to +70
Topr
°C
  
Storage temperature
40 to +125
Tstg
°C
-



Description

The LC74798 and LC74798M are on-screen display controller CMOS ICs that display characters and patterns on the TV screen under microprocessor control. These ICs nclude a built-in PDC/VPS/UDT interface circuit.




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