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Microchip 4 kB EEPROM 230 ns 8-Pin SOIC Serial-SPI Memory Chip 25LC040-I/SN
Specifications
| Country of Origin | India |
|---|---|
| Brand | Microchip |
| Length | 4.9mm |
| Model | 25LC040-I/SN |
| Width | 6mm |
| Mount Type | Through Hole |
| Maximum Operating Temperature | 85°C |
| Package Type | SOIC |
| Minimum Operating Temperature | -40°C |
| Memory size | 4kB |
| Interface Type | Serial-SPI |
| Pin Count | 8 |
| Maximum Supply Voltage | 5.5V |
| Minimum Supply Voltage | 2.5V |
| Supply Current | 5mA |
| Maximum Clock Frequency | 10MHz |
| Organisation | 512 x 8 bit |
| Number of Bits per Word | 8 |
| Maximum Random Access Time | 230ns |
| Number of Words | 512 |
| Built-In Write Protection | Power on/off data protection circuitry, Write enable latch, Write-protect pin |
| Temperature Ranges Supported | Industrial (I): -40°C to +85°C, Automotive (E) (25C040): -40°C to +125°C |
| Block Write Protection | Protect none, 1/4, 1/2 or all of array |
| Write cycle time | 5 ms max |
Key Features
- Memory size of 4 kB suitable for serial EEPROM storage.
- Supports serial SPI interface with maximum clock frequency of 10 MHz.
- Packaged in a Through Hole 8-pin SOIC for easy mounting.
- Operates within supply voltage range of 2.5 V to 5.5 V.
- Data retention guaranteed for 200 years with low power consumption.
- Operating temperature ranges from -40°C to 85°C (industrial grade) and optionally -40°C to 125°C (automotive grade).
- Maximum random access time of 230 ns for data retrieval.
- Integrated write protection features with power on/off protection, write enable latch, and write-protect pin.
Product Description
Microchip 25LC040-I/SN is a 4 kB serial Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for efficient digital data storage. It operates with a simple Serial Peripheral Interface (SPI) bus, utilizing clock (SCK), data input (SI), data output (SO), and chip select (CS) signals. The device also supports a hold function to pause communications when required.
This memory chip features a standardized 8-pin Small Outline Integrated Circuit (SOIC) package with through-hole mounting, allowing easy integration in industrial electronic systems requiring non-volatile memory components.
Key electrical parameters include a maximum clock frequency of 10 MHz and supply voltages ranging from 2.5 V minimum to 5.5 V maximum, making it compatible with various embedded platforms. It boasts a maximum random access time of 230 ns and a write cycle time up to 5 ms, optimized for fast data read and write cycles.
Reliability is enhanced through robust built-in protections such as power on/off data protection circuitry, write enable latch, and a dedicated write-protect pin to safeguard memory against accidental overwrites. The chip supports block write protection allowing safeguarding of none, one-quarter, half, or the entire memory array.
The 512 x 8-bit memory is organized for convenience in page writes of 16 bytes. Its low power CMOS technology ensures write current typically at 3 mA and standby current as low as 500 nA, enabling energy-efficient operation in portable and battery-powered devices.
Operating temperature range is industrial grade from -40°C to +85°C, with an automotive grade option extending operation to +125°C, supporting use in harsh environmental conditions.
Applications include industrial automation, data logging, consumer electronics, telecommunications equipment, and automotive systems requiring reliable and long-term data retention exceeding 200 years under nominal conditions.
Category buyers can browse other EEPROM solutions and semiconductor memory products at EnvMart for comprehensive industrial electronics sourcing.
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Frequently Asked Questions
The memory size of this model is 4 kB, organized as 512 x 8 bits.
It supports a maximum clock frequency of 10 MHz for the serial SPI interface.
This EEPROM operates within a supply voltage range of 2.5 V to 5.5 V.
The maximum random access time for this model is 230 ns.
It is packaged in a Through Hole 8-pin SOIC format for easy mounting.
It operates within an industrial grade temperature range of -40°C to 85°C, with an automotive grade option extending to -40°C to 125°C.
It includes power on/off data protection circuitry, a write enable latch, and a write-protect pin to prevent accidental overwrites.
The maximum write cycle time is 5 ms.
The memory contains 512 words, with each word being 8 bits.
The supply current is typically 5 mA during operation.
It supports block write protection allowing protection of none, one-quarter, half, or the entire memory array.
It is suitable for applications in industrial automation, data logging, consumer electronics, telecommunications equipment, and automotive systems.
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