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25C040

MicrochipTechnology
Part Number 25C040
Manufacturer MicrochipTechnology
Description 4K SPI Bus Serial EEPROM
Published Mar 23, 2005
Detailed Description Not recommended for new designs – Please use 25AA040A or 25LC040A. 25AA040/25LC040/25C040 4K SPI Bus Serial EEPROM De...
Datasheet PDF File 25C040 PDF File

25C040
25C040

Overview
Not recommended for new designs – Please use 25AA040A or 25LC040A.
25AA040/25LC040/25C040 4K SPI Bus Serial EEPROM Device Selection Table Part Number VCC Range Max.
Clock Frequency 25AA040 25LC040 25C040 1.
8-5.
5V 2.
5-5.
5V 4.
5-5.
5V 1 MHz 2 MHz 3 MHz Temp.
Ranges I I I,E Features: • Low-power CMOS technology: - Write current: 3 mA, typical - Read current: 500 μA, typical - Standby current: 500 nA, typical • 512 x 8-bit organization • 16 byte page • Write cycle time: 5 ms max.
• Self-timed Erase and Write cycles • Block write protection: - Protect none, 1/4, 1/2 or all of array • Built-in write protection: - Power on/off data protection circuitry - Write enable latch - Write-protect pin • Sequential read • High reliability: - Endurance: 1M cycles - Data retention: > 200 years - ESD protection: > 4000V • 8-pin PDIP, SOIC and TSSOP packages • Temperature ranges supported: - Industrial (I): -40°C to +85°C - Automotive (E) (25C040): -40°C to +125°C Description: The Microchip Technology Inc.
25AA040/25LC040/ 25C040 (25XX040*) is a 4 Kbit serial Electrically Erasable PROM.
The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus.
The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines.
Access to the device is controlled through a Chip Select (CS) input.
*25XX040 is used in this document as a generic part number for the 25AA040/25LC040/25C040 devices.
Communication to the device can be paused via the hold pin (HOLD).
While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.
Also, write operations to the device can be disabled via the write-protect pin (WP).
Package Types PDIP CS 1 8 VCC 25XX040 SO 2 WP 3 7 HOLD 6 SCK VSS 4 5 SI SOIC CS 1 SO 2 WP 3 VSS 4 TSSOP HOLD VCC CS SO 1 2 3 4 25XX040 25XX040 8 VCC 7 HOLD 6 SCK 5 SI 8 SCK 7 SI 6 VSS 5 WP B...


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