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25LC640AT-E/SN

Name: 25LC640AT-E/SN
Rating: 4.7 (12 reviews)

IC EEPROM 64KBIT SPI 10MHZ 8SOIC

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資料表 25LC640AT-E/SN DataSheet
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規格

Part Status	Active
Base Product Number	25LC640
DigiKey Programmable	Verified
Memory Type	Non-Volatile
Memory Format	EEPROM
Technology	EEPROM
Memory Size	64Kbit
Memory Organization	8K 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 ~ 125°C (TA)
Mounting Type	Surface Mount
Package	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Packaging	Cut Tape (CT), Tape & Reel (TR)

概述

Description

The 25LC640AT-E/SN is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Microchip Technology. It features a 64Kb (kilobit) memory capacity organized in 8K x 8 bits. This device communicates via a Serial Peripheral Interface (SPI), allowing for fast data transfer rates up to 20 MHz.
Key characteristics include a low operating voltage range of 2.5V to 5.5V, making it suitable for a variety of applications, including consumer electronics, automotive, and industrial systems. It has a page write capability, allowing for efficient data storage, and supports a wide temperature range from -40°C to +85°C.
The 25LC640AT-E/SN is commonly used for storing configuration data, calibration constants, and other non-volatile information in embedded systems. Its compact size and ease of integration make it a popular choice for designers seeking reliable non-volatile memory solutions.

Package

The 25LC640AT-E/SN is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) format. This type of package is surface-mounted and typically used for compact applications in electronics.

Pinout

The 25LC640AT-E/SN is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a pin count of 8.
### Pin Functions:
1. VSS (Pin 1): Ground connection.
2. CS (Chip Select, Pin 2): Activates the chip for communication.
3. SI (Serial Input, Pin 3): Data input pin for writing to the memory.
4. SO (Serial Output, Pin 4): Data output pin for reading from the memory.
5. SCK (Serial Clock, Pin 5): Clock input for synchronizing data transfer.
6. WP (Write Protect, Pin 6): Pin to enable or disable write protection.
7. VCC (Pin 7): Supply voltage (typically 2.5V to 5.5V).
8. NC (Pin 8): Not connected; unused pin.
This device is commonly used in applications requiring non-volatile memory storage, such as in microcontroller projects.

Manufacturer

The manufacturer of the 25LC640AT-E/SN is Microchip Technology Inc., a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, Microchip is known for its development of embedded control solutions and has a diverse product portfolio that includes microcontrollers, digital signal controllers, and memory products. The company serves a wide range of industries, including automotive, industrial, consumer, and communication sectors. Microchip is recognized for its commitment to innovation, quality, and customer support, making it a key player in the semiconductor industry.

Application

The 25LC640AT-E/SN is a 64Kb SPI serial EEPROM used in various applications, including consumer electronics, automotive systems, smart meters, industrial automation, and telecommunications. It is ideal for data storage, configuration settings, firmware updates, and non-volatile memory needs in devices like sensors, microcontrollers, and embedded systems. Its low power consumption and reliability make it suitable for battery-operated applications as well.

Equivalent

The 25LC640AT-E/SN chip, a 64Kb serial EEPROM by Microchip, has several equivalent products, including the 25LC640-I/P, 25LC640-I/SN, and 25LC640A-I/SN. Other comparable alternatives may come from different manufacturers but should match the same specifications, such as memory size, interface (SPI), and voltage range. Always verify compatibility for specific applications.