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AT25640B-SSHL-B

Name: AT25640B-SSHL-B
Rating: 4.7 (12 reviews)

IC EEPROM 64KBIT SPI 20MHZ 8SOIC

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資料表 AT25640B-SSHL-B DataSheet
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規格

Part Status	Active
DigiKey Programmable	Verified
Memory Type	Non-Volatile
Memory Format	EEPROM
Technology	EEPROM
Memory Size	64Kbit
Memory Organization	8K x 8
Memory Interface	SPI
Write Cycle Time - Word, Page	5ms
Voltage - Supply	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Base Product Number	AT25640
Clock Frequency	20 MHz

概述

Description

The AT25640B-SSHL-B is a serial Flash memory device from Microchip Technology, designed for embedded applications. It features 32 megabits (4 megabytes) of memory capacity with a serial peripheral interface (SPI) for efficient data transfer. The device is known for its high-speed operation and low power consumption, making it suitable for battery-powered applications.
It supports various voltage levels, typically operating between 2.7V and 3.6V, and is available in different packages, including small form factors for space-constrained designs. The AT25640B-SSHL-B offers features such as sector protection, which enhances data security, and supports multiple read and write commands, facilitating flexibility in data management.
Due to its versatility, it is commonly used in consumer electronics, automotive systems, and industrial applications. Overall, the AT25640B-SSHL-B is a reliable choice for developers seeking efficient and compact memory solutions in their designs.

Features

The AT25640B-SSHL-B is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip designed for low-power applications. Key features include:
1. Memory Size: 32 Kbit (4 K x 8 bits).
2. Interface: I²C-compatible serial interface, allowing easy integration with microcontrollers.
3. Voltage Range: Operates at a supply voltage of 1.7V to 5.5V, making it suitable for various battery-powered devices.
4. Low Power Consumption: Offers low active and standby current, enhancing energy efficiency.
5. Data Retention: Retains data for over 100 years, with a write endurance of up to 1 million cycles.
6. Package Type: Available in a small, surface-mount SOIC-8 package, facilitating compact designs.
7. Page Write Capability: Supports page write operations, allowing efficient writing of multiple bytes.
This EEPROM is ideal for applications requiring non-volatile memory, such as consumer electronics, automotive, and industrial devices.

Package

The AT25640B-SSHL-B is packaged in a 28-lead SOIC (Small Outline Integrated Circuit) format. This package type is designed for surface mounting and is commonly used for memory devices like EEPROMs.

Pinout

The AT25640B-SSHL-B is a 256 Kbit EEPROM memory chip from Microchip Technology. It comes in a 8-pin SOIC (Small Outline Integrated Circuit) package.
### Pin Count and Functions:
1. Pin 1 (A0): Address input used for selecting the device in multi-device applications.
2. Pin 2 (A1): Address input for additional address selection.
3. Pin 3 (A2): Address input for further address selection.
4. Pin 4 (GND): Ground reference for the chip.
5. Pin 5 (SDA): Serial Data Line for data input and output.
6. Pin 6 (SCL): Serial Clock Line for synchronizing data transfer.
7. Pin 7 (WP): Write Protect; when low, allows write operations; when high, prevents them.
8. Pin 8 (VCC): Power supply, typically +2.5V to +5.5V.
This device is commonly used for non-volatile data storage applications.

Manufacturer

The AT25640B-SSHL-B is manufactured by Microchip Technology Inc. Microchip is a publicly traded American company specializing in semiconductor products, particularly microcontrollers, memory, and analog devices. Founded in 1989, it has established itself as a leader in embedded control solutions, providing a range of products for various applications in automotive, industrial, consumer, and communications markets. Microchip is known for its commitment to innovation and customer support, offering comprehensive development tools and resources for engineers.

Application

The AT25640B-SSHL-B is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) used in various application areas, including consumer electronics, automotive systems, industrial automation, medical devices, and smart appliances. It is ideal for data storage, configuration settings, firmware updates, and system calibration due to its low power consumption and reliable data retention.

Equivalent

The AT25640B-SSHL-B is a 512K EEPROM from Atmel (now part of Microchip Technology). Equivalent products include:
1. Microchip 25LC640 - Serial EEPROM
2. STMicroelectronics M95320 - Serial EEPROM
3. Winbond W25X640 - Serial Flash Memory
Always verify compatibility regarding voltage, interface, and memory organization before substitution.