24LC21A/SN
1Kbit 400kHz I2C SOIC-8 Memory RoHS
1K 2.5V Dual Mode I²C Serial EEPROM
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
9 in stock
#C1352010
Stock & price checked 22 h ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 1+ | ₹126.85 | ₹126.85 |
| 10+ | ₹123.81 | ₹1,238.10 |
| 30+ | ₹121.86 | ₹3,655.80 |
| 100+ | ₹119.90 | ₹11,990.00 |
1 × ₹126.85
₹126.85
excl. GST
₹149.68 incl. 18% GST
- Dispatch in 15-18 working days
- GST invoice with every order
- Standard pack: 100 per tube
24LC21A/SN
₹126.85 for 1 + GST
Specifications
- Operating Temperature
- -40℃~+85℃
- Features
- Hardware write protection function;Noise suppression function
- Memory Size
- 1Kbit
- Voltage - Supply
- 2.5V~5.5V;3mA
- Clock Frequency
- 400kHz
- Access Time
- 3500ns;900ns
- Data Retention - TDR (Year)
- 200 Years
- Write Cycle Time(tWC)
- 10ms
- Standby Supply Current
- 100uA
- Write Cycle Endurance
- 1,000,000 cycles
- Interface
- I2C
Packaging & compliance
- RoHS
- ROHS3 Compliant
- Lifecycle
- Active
- ECCN
- EAR99
- Packaging
- Tube-packed
- Standard pack
- 100 / Tube
- Sold per
- Piece
- Minimum order
- 1
- Unit weight
- 0.72 g
Overview
The 24LC21A is a 128x8 -bit dual-mode Electrically Erasable PROM. This device 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 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.
Key features
- Single Supply with Operation Down to 2.5V
- Completely Implements DDC1 TM/DDC2TM Interface for Monitor Identification, Including Recovery to DDC1
- Pin and Function Compatible with 24LC21
- Low-Power CMOS Technology - 1 mA typical active current 10 μA standby current typical at 5.5V
- 2-Wire Serial Interface Bus, I²C TM Compatible 100 kHz (2.5V) and 400 kHz (5V) 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
- ESD Protection >4000V
- 8-pin PDIP and SOIC Package
- Available for Extended Temperature Ranges - Industrial (I): -40℃ to +85℃
- Pb-Free and RoHS Compliant
Alternatives
Similar parts — check the datasheet before substituting.
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