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SED1278

Features: • Low-power CMOS technology• 40 segment output• 16 common output• Duty: 1/8 or 1/16 (set by command)• 4/8-bit CPU data interface, TTL compatible• Two frame AC drive wave form• CGROM: .................................... 240 characters• CGRA...

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SeekIC No. : 004487443 Detail

SED1278: Features: • Low-power CMOS technology• 40 segment output• 16 common output• Duty: 1/8 or 1/16 (set by command)• 4/8-bit CPU data interface, TTL compatible• Two fr...

SED1278 Data Sheet

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Part Number:
SED1278
Supply Ability:
5000

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

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Product Details

Description



Features:

• Low-power CMOS technology
• 40 segment output
• 16 common output
• Duty: 1/8 or 1/16 (set by command)
• 4/8-bit CPU data interface, TTL compatible
• Two frame AC drive wave form
• CGROM: .................................... 240 characters
• CGRAM: ........................................ 8 characters
• Display data RAM: ... 80 ×8 bits (80 characters)
• Recommended expansion segment driver:
   SED1181FLA (64 output)
   SED1681F (80 output)
• Built-in power on power-on reset
• Built-in RC oscillator
• Built-in LCD driver voltage-divider network
• TTL compatible CPU interface
• Supply voltage ................... Logic: 4.5V to 5.5V
                                                 LCD: 3.5V to 5.5V
• Package:
      QFP5-80 pins (F0A, F0B, F0C, F0D, F0G, F0H)
              Al pad (D0A, D0B, D0C, D0D, D0G, D0H)


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Ratings
Unit
Supply voltage (1)
VDD
-0.3to7.0
V
Supply voltage (2)
V1toV5
0.3 to VDD+0.3
V
Input voltage
VI
0.3 to VDD+0.3
V
Output voltage
VO
0.3 to VDD+0.3
V
power dissipation
PD
300
mW
Operating temperature
Topr
20 to +75
Storage temperature
Tstg
65 to +150
Soldering temperature and time
Tsol
260°C, 10 s (at lead)
-
Note: The following condition must always hold true: VDD V1 V2 V3 V4 V5


Description

The SED1278 is a character LCD controller-driver, capable of driving displays as large as 2 lines of 8 characters (5 × 8 pixels), with minimum external components.

The SED1278 has an internal CGROM consisting of 240 characters (5×7) plus the underline cursor, JIS,ASCII, and eight user-programmable characters in RAM.

The SED1278 has 40 segment output and 16 common output built-in. Thus, one chip is capable of displaying up to 16 characters. The SED1278 can display one line of 48 characters using an SED1681F (80-bit output) as an expansion segment driver.

The SED1278 is fabricated using a silicon gate CMOS technology process and features very low power dissipation. This makes the device suitable for handheld and portable applications.




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