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  2. Semiconductors
  3. Memory ICs
  4. RAM (Random Access Memory)
  5. EEPROM
  6. I2C Interface Protocol
  7. 24LC21A/SN

Microchip | 24LC21A/SN

Manufacturer Part #

24LC21A/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
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Product Specification Section
Microchip 24LC21A/SN - 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 24LC21A series of 128 x 8-bit dual-mode 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 memory array from 00h to 7Fh, clocked by the VCLK pin.

A valid high-to-low transition on the SCL pin will cause the device to enter the transition mode, and look for a valid control byte on the I2C™Compatible bus. If it detects a valid control byte from the master, it will switch into Bidirectional mode, with byte selectable read/write capability of the memory array using SCL. If no control byte is received, the device will revert to the Transmit-Only mode after it receives 128 consecutive VCLK pulses while the SCL pin is idle. The 24LC21A is available in a standard 8-pin PDIP and SOIC package in industrial temperature range.

Features:

  • Single Supply with Operation Down to 2.5 V
  • Completely Implements DDC1™/DDC2™ Interface for Monitor Identification, Including Recovery to DDC1
  • Pin and Function Compatible with 24LC21
  • Low-Power CMOS Technology
  • 2-Wire Serial Interface Bus, I2C™ Compatible
  • 100 kHz (2.5 V) and 400 kHz (5 V) Compatibility
  • Self-Timed Write Cycle (including auto-erase)
  • Page Write Buffer for up to Eight Bytes
  • 1,000,000 Erase/Write Cycles Ensured
  • Data Retention > 200 years
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
6 Weeks
Minimum Order:
700
Multiple Of:
100
Total
$325.50
USD
Quantity
Unit Price
700
$0.465
1,400+
$0.455
Product Variant Information section
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