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Manufacturer Part #

24LC21/SN

24LC21 Series 1 Kb I2C 2 Wire (128 x 8) 2.5V Serial EEPROM SMT - SOIC-8

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Product Variant Information section
Date Code:
Product Specification Section
Technical Attributes
Attributes Table
Memory Density: 1kb
Memory Organization: 128 x 8
Supply Voltage-Nom: 2.5V to 5.5V
Clock Frequency-Max: 400kHz
Write Cycle Time-Max (tWC): 10ms
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The 24LC21 series of 128 x 8 bit Electrically Erasable PROM is designed for use in applications requiring storage and serial transmission of configuration and control information.

Two modes of operation have been implemented: Transmit-only mode and Bidirectional mode. Upon power-up, the device will be in the Transmit-only mode, sending a serial bit stream of the entire memory array contents, clocked by the VCLK pin. A valid high-to-low transition on the SCL pin will cause the device to enter the Bidirectional mode, with byte selectable read/write capability of the memory array. The 24LC21 is available in a standard 8-pin PDIP and SOIC package, in both commercial and industrial temperature ranges.

Features:

  • Single supply with operation down to 2.5 V
  • Completely implements DDC1™/DDC2™ interface for monitor identification
  • Low-power CMOS technology:
    • 1 mA active current typical
    • 10 μA standby current typical at 5.5 V
  • 2-wire serial interface bus, I2C™ compatible
  • Self-timed write cycle (including auto-erase)
  • Page-write buffer for up to 8 bytes
  • 100 kHz (2.5 V) and 400 kHz (5 V) compatibility
  • Factory programming (QTP) available
  • 1,000,000 erase/write cycles ensured
  • Data retention > 200 years
  • 8-pin PDIP and SOIC package
  • Available for extended temperature ranges:
    • Commercial (C): 0° C to +70° C
    • Industrial (I): -40° C to +85° C
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
52 Weeks
Minimum Order:
1000
Multiple Of:
100
Total
$480.00
USD
Quantity
Web Price
100
$0.58
300
$0.50
1,000
$0.48
2,000
$0.475
4,000+
$0.465
Product Variant Information section