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Product Detailed Parameters
- Description：IC EEPROM 4KBIT SPI 10MHZ 8SOIC
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Memory Type：Non-Volatile
- Memory Format：EEPROM
- Technology：EEPROM
- Memory Size：4Kbit
- Memory Organization：512 x 8
- Memory Interface：SPI
- Clock Frequency：10 MHz
- Write Cycle Time - Word, Page：5ms
- Voltage - Supply：2.5V ~ 5.5V
- Operating Temperature：-40°C ~ 150°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Access Time：-
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 25LC040A-H/SN is a 4 Kbit (512 x 8) Serial Electrically Erasable PROM utilizing SPI-compatible communication. It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 5 MHz. The device features self-timed erase and write cycles with a maximum duration of 6 ms. It is housed in an 8-lead SOIC package and is designed for extended temperature operation from -40°C to +150°C.
Feature Summary
- Supports byte-level and page-level write operations with up to 16 bytes per page.
- Includes built-in hardware write protection via the WP pin and software block protection.
- Features power-on/off data protection circuitry and a write enable latch.
- Allows serial communication suspension via the HOLD input without resetting the sequence.
Applications
- Microcontroller systems requiring non-volatile data storage
- Industrial applications operating at elevated temperatures
- Embedded devices needing secure parameter retention
Procurement Notes
Verify that the specific ordering suffix matches the required temperature grade and package type. Confirm the voltage range compatibility with the target system supply. Ensure the design accounts for the extended high-temperature rating specified by the 'H' suffix. Cross-reference the datasheet revision to confirm current electrical characteristics.
Selection Notes
Select this component when an SPI EEPROM requires operation beyond standard industrial limits. The extended temperature range accommodates environments exceeding typical automotive or industrial specifications. Verify that the 5 MHz speed meets the system bus requirements. Ensure the 8-pin SOIC footprint aligns with the PCB layout constraints.
Part Context
This part belongs to the 25LCXXXA family of low-density serial EEPROMs. The 'H' suffix denotes the extended temperature grade, distinguishing it from commercial or standard industrial variants. The 'SN' suffix indicates the 8-lead Small Outline Integrated Circuit package format used for surface mount assembly.
Replacement Considerations
Substitutes must match the 4 Kbit density, SPI interface, and 2.5V to 5.5V voltage range. Verify that any replacement component supports the same 8-lead SOIC package dimensions and pinout configuration to ensure mechanical compatibility.
