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AT24C256C

256Kb I2C compatible 2-wire Serial EEPROM

Status: In Production

Features:

  • 32K x 8 (256 Kbit)
  • 400 kHz and 1 MHz clock compatibility
  • Self-Timed Erase and Write Cycles (5 ms max.)
  • Read current 1 mA (Typ), 2 mA (Max)
  • Write current 2 mA (Typ), 3 mA (Max)
  • Standby current 6 uA (Max)
  • Hardware Write-Protect Pin
  • More than 1 million erase/write cycles
  • Data retention > 100 years
  • Grade 1 Temperature Range: -40°C to 125°C
  • Grade 2 Temperature Range: -40°C to 105°C
  • Grade 3 Temperature Range: -40°C to 85°C
  • Qualified for Automotive Applications
  • Factory Programming Available
  • Available in 8-lead SOIC, 8-lead TSSOP, 8-pad UDFN, and 8-ball VFBGA packages
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The Microchip AT24C256C is a 256Kb Serial EEPROM utilizing an I2C (2-wire) serial interface. The device is organized as one block of 32K x 8 and is optimized for use in consumer, industrial, and automotive applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

Additional Features
    • 32K x 8 (256 Kbit)
    • 2-Wire Serial Interface, I2C Compatible
      • 400 kHz and 1 MHz clock compatibility
    • Self-Timed Erase and Write Cycles (5 ms max.)
    • Low Power Consumption
      • Read current 1 mA (Typ), 2 mA (Max)
      • Write current 2 mA (Typ), 3 mA (Max)
      • Standby current 6 uA (Max)
    • Hardware Write-Protect Pin
    • More than 1 million erase/write cycles
    • Data retention > 100 years
    • Extended Temperature Ranges Available (Grade 1, 2, and 3 as defined in AEC-Q100)
      • Grade 1 Temperature Range: -40°C to 125°C
      • Grade 2 Temperature Range: -40°C to 105°C
      • Grade 3 Temperature Range: -40°C to 85°C
    • Qualified for Automotive Applications
    • Factory Programming Available
    • Available in 8-lead SOIC, 8-lead TSSOP, 8-pad UDFN, and 8-ball VFBGA packages
Parametrics
Name
Value
Density
256K bits
Op. Volt Range (V)
1.7 to 5.5
Max. Clock Freq.
1 MHz
Page Size (bytes)
64
Write Protect
Whole Array
Temp Range (°C)
-40°C to +125°C
Endurance
1,000,000

Documents

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Development Environment

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Programmers
MPLAB PM3 Universal Device Programmer
MPLAB PM3 Universal Device Programmer ( DV007004 )

The MPLAB® PM3 Universal Device Programmer is easy to use and operates with a PC or as a stand-alone unit, and programs Microchip's entire line of PIC® devices as well as the latest dsPIC® DSC devices. When used standalone, data can be loaded and saved with the SD/MMC card (not included).

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
AT24C256C-XHL-T
0.035800
0.199200
8
TSSOP
4.4mm
NiPdAu
e4
AT24C256C-MAHL-E
0.009600
0.084000
8
UDFN
2x3x0.6mm
NiPdAu
e4
AT24C256C-MAHL-T
0.009600
0.084000
8
UDFN
2x3x0.6mm
NiPdAu
e4
AT24C256C-SSPD-T
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
AT24C256C-SSHL-B-899
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
AT24C256C-SSHL-T-899
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
AT24C256C-XPD-T
0.035800
0.199200
8
TSSOP
4.4mm
NiPdAu
e4
AT24C256C-XHL-B
0.035800
0.190000
8
TSSOP
4.4mm
NiPdAu
e4
AT24C256C-MAPD-E
0.009600
0.084000
8
UDFN
2x3x0.6mm
NiPdAu
e4
AT24C256C-MAPD-T
0.009600
0.084000
8
UDFN
2x3x0.6mm
NiPdAu
e4
AT24C256C-SSHL-T
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
AT24C256C-SSHL-T-537
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
AT24C256C-SSHL-T-989
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
AT24C256C-SSHL-B
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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