25AA640-I/SN The Microchip Technology 25AA640-I/SN is a 64 Kbit Serial EEPROM accessed via an SPI compatible serial bus. It operates with a clock frequency of up to 1 MHz.
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25AA640-I/SN

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology 25AA640-I/SN is a 64 Kbit Serial EEPROM accessed via an SPI compatible serial bus. It operates with a clock frequency of up to 1 MHz.
✓ Total Stock: 19,125 pcs
$ Price Range: $1.24

25AA640-I/SN Available from 1 distributor

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19,125 pcs
19125 pcs On Request 1 On Request On Request 2020+ On Request On Request

25AA640-I/SN Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
ESD Protection
Lead Spacing
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Mounting Type
Operating Temperature
Supplier Device Package
Supplier Package
Technology
Voltage
Write Cycle Time

25AA640-I/SN Description

Short technical summary and product information.

The Microchip Technology 25AA640-I/SN is a 64 Kbit Serial Electrically Erasable PROM (EEPROM) utilizing Low-Power CMOS technology. It is accessed via a standard Serial Peripheral Interface (SPI) compatible serial bus, requiring SCK, SI, and SO lines, with control managed by a Chip Select (CS) input. The device supports sequential reads and features built-in write protection mechanisms, including a write-protect pin.

 

This EEPROM is organized as 8192 x 8 bits with a 32-byte page size and a maximum write cycle time of 5 ms. It operates within a voltage range of 1.8V to 5.5V and supports an industrial temperature range of -40°C to +85°C. Key electrical characteristics include a typical write current of 3 mA, a typical read current of 500 μA, and a very low typical standby current of 500 nA. Reliability is high, with data retention exceeding 200 years and ESD protection greater than 4000V.

 

The 25AA640-I/SN is available in an 8-pin SOIC package, suitable for surface mounting. Its features make it suitable for various applications requiring non-volatile memory storage.

25AA640-I/SN Quick Information

Product Type: EEPROM
Series: 25AA640/25LC640
Canonical Name: 25AA640-I/SN 64Kbit SPI EEPROM
Subcategory: Serial EEPROM

25AA640-I/SN Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

25AA640-I/SN Estimated Pricing

Qty Low High
1+ $1.24 $1.24

Estimated market price range - modelled values for guidance only, not live distributor offers.

25AA640-I/SN Features

  • 64 Kbit Serial EEPROM with SPI interface.
  • Low-power CMOS technology for efficiency.
  • Operates from 1.8V to 5.5V supply.
  • Industrial temperature range: -40°C to 85°C.
  • Available in an 8-pin SOIC package.

25AA640-I/SN Applications

  • Stores configuration parameters in embedded systems.
  • Ideal for parameter storage in industrial controls.
  • Used in low-power wireless sensor nodes.
  • Suitable for SPI-based data logging modules.

25AA640-I/SN FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the 25AA640-I/SN?

The operating voltage range is 1.8V to 5.5V.

What package is the 25AA640-I/SN available in?

It is available in an 8-SOIC (0.154", 3.90mm Width) surface-mount package.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C (TA).

How much memory does the 25AA640-I/SN have?

It has 64 Kbit (8K x 8) of memory.

What is the memory interface?

The memory interface is SPI.

What is the maximum clock frequency?

The maximum clock frequency is 1 MHz.

What is the write cycle time?

The write cycle time is 5 ms maximum.

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