| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
8,782 pcs
|
8782 pcs | On Request | 1 | On Request | On Request | 99+ | On Request | On Request |
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| AEC Qualified | |
| Automotive Grade | |
| ESD Protection | |
| Industrial Grade | |
| Interface | |
| Lead Spacing | |
| Lead Style | |
| Medical Grade | |
| Memory Size | |
| Military Grade | |
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| Operating Temperature | |
| SVHC Present | |
| Storage Temperature | |
| Tape & Reel | |
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| Write Cycle Time |
The Microchip Technology 24LC21AT-I/SN is a 128 x 8-bit dual-mode Electrically Erasable PROM (EEPROM). This device is engineered for applications requiring the storage and serial transmission of configuration and control information.
It supports two modes of operation: Transmit-Only and Bidirectional. Upon power-up, it defaults to Transmit-Only mode, sending data clocked by VCLK. A valid transition on the SCL pin can switch the device to Bidirectional mode, enabling byte-selectable read/write capabilities via the I2C bus.
Key features include operation down to 2.5V, I2C compatibility with 100 kHz (2.5V) and 400 kHz (5V) operation, low-power CMOS technology with typical active current of 1 mA and standby current of 10 μA at 5.5V. The device ensures 1,000,000 erase/write cycles and data retention exceeding 200 years.
The 24LC21AT-I/SN is available in 8-pin PDIP and SOIC packages, suitable for industrial temperature ranges (-40°C to +85°C). It also implements the DDC1/DDC2 interface for monitor identification.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.28 | $1.28 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The 24LC21AT-I/SN operates with a single supply voltage from 2.5V to 5.5V.
The 24LC21AT-I/SN uses an I2C compatible 2-wire serial interface bus.
It supports 100 kHz at 2.5V and 400 kHz at 5V.
The typical active current is 1 mA, and the typical standby current is 10 μA at 5.5V.
The device is ensured for 1,000,000 erase/write cycles.
Data retention is guaranteed to be greater than 200 years.
It is available in 8-pin PDIP and SOIC packages.