25LC040A in 25LCxx / AT25 SPI EEPROM Family
The 25LC040A is a 4-Kbit serial Electrically Erasable PROM (EEPROM) manufactured by Microchip Technology, designed for low-power and high-reliability data storage applications. Organized as 512 bytes of 8 bits each, this memory family utilizes a standard Serial Peripheral Interface (SPI) bus for high-speed data transfer. These devices are frequently used for storing configuration constants, calibration data, and system state information in embedded systems where space is limited and power consumption is a primary design constraint.
Variants in This Sub-Family
| Part Number | Difference | Stock |
|---|---|---|
| 25LC040A-I/SN (Microchip Technology) | I/SN | 10,058 |
Variants within the 25LC040A sub-family primarily differ by operating temperature ratings and package types. Common suffixes include 'I' for industrial temperature (-40C to +85C) and 'E' for extended temperature ranges (-40C to +125C). Available packages range from the common 8-lead SOIC and MSOP to the ultra-thin DFN and SOT-23 options, allowing engineers to select the mechanical profile that fits their specific design constraints.
