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AT21CS11

Single-Wire 1-Kbit (128 x 8) Serial EEPROM with Factory-Programmed 64-Bit Serial Number

Status: In Production

Features:

  • 128 x 8 (1 Kbit)
  • I²C Protocol Structure
  • Communication through a single I/O pin
  • High Speed (125 kbps) Mode
  • Self-Timed Erase and Write Cycles (5 ms max.)
  • Read current 0.08 mA (Typ), 0.3 mA (Max)
  • Write current 0.2 mA (Typ), 0.5 mA (Max)
  • Standby current 0.7 uA (Typ), 2.5 uA (Max)
  • Four independent 256-bit zones
  • More than 1 million erase/write cycles
  • Data retention > 100 years
  • ESD protection > 8000V (HBM)
  • Factory Programming Available
  • Available in 8-pin SOIC (150 mil), 3-pin SOT23, 2-pad XSFN, and 4-ball Thin CSP packages.
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Overview
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Development Environment
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Device Overview

Summary

The Microchip AT21CS11 is a 1 Kb Serial EEPROM utilizing the Single-Wire bus. Only two pins are needed to access the device: SI/O and GND. The SI/O signal is a combination data and power line, providing power to the device with a parasitic power scheme. The device is organized as one block of 128 x 8 and is optimized for use in consumer and industrial applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

The AT21CS11 features a 256-bit Security register which includes a 64-bit serial number. The device also features manufacturer ID support in which the device responds with a unique value for density and revision information.

Additional Features
    • 128 x 8 (1 Kbit)
    • Single-Wire Compatible
      • I²C Protocol Structure
      • Communication through a single I/O pin
    • High Speed (125 kbps) Mode
    • Self-Timed Erase and Write Cycles (5 ms max.)
    • Low Power Consumption
      • Read current 0.08 mA (Typ), 0.3 mA (Max)
      • Write current 0.2 mA (Typ), 0.5 mA (Max)
      • Standby current 0.7 uA (Typ), 2.5 uA (Max)
    • Software Write Protection
      • Four independent 256-bit zones
    • More than 1 million erase/write cycles
    • Data retention > 100 years
    • ESD protection > 8000V (HBM)
    • Factory Programming Available
    • Available in 8-pin SOIC (150 mil), 3-pin SOT23, 2-pad XSFN, and 4-ball Thin CSP packages.
Parametrics
Name
Value
Density
1K bits (x8)
Op. Volt Range (V)
2.7 to 4.5
Max. Clock Freq.
125 kbps
Page Size (bytes)
8
Write Protect
Software Configurable
Temp Range (°C)
-40°C to +85°C
Endurance
1,000,000

Documents

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Data Sheets

Development Environment

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
AT21CS11-SSH10-B
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
AT21CS11-SSH10-T
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
AT21CS11-MSH10-T
0.020300
0.110000
2
XSFN
5x3.5x0.4mm
NiPdAu
e4
AT21CS11-MSH10-B
0.020300
0.502857
2
XSFN
5x3.5x0.4mm
NiPdAu
e4
AT21CS11-STU10-T
0.008300
0.039000
3
SOT-23
1.3mm
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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