Microchip Technology 25AA640AT-E/ST
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.34 | $3.34 |
| 15+ | $0.76 | $11.40 |
| 25+ | $0.75 | $18.75 |
| 50+ | $0.71 | $35.50 |
| 100+ | $0.62 | $62.00 |
| N+ | $0.12 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| 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 |
| Access Time | - |
| Voltage - Supply | 1.8V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 8-TSSOP |
| ROHS |  |
Microchip Technology 25AA640AT-E/ST - 64Kbit SPI Serial EEPROM
The 25AA640AT-E/ST is a high-reliability 64Kbit SPI serial EEPROM from Microchip Technology, designed for industrial and embedded applications requiring non-volatile data storage. This surface-mount memory IC features an 8K x 8 bit organization and operates across a wide voltage range of 1.8V to 5.5V, making it ideal for battery-powered and mixed-voltage systems.
With an extended operating temperature range of -40°C to 125°C, this EEPROM delivers exceptional performance in harsh industrial environments. The SPI interface supports clock frequencies up to 10 MHz, enabling fast data transfer while maintaining low power consumption. The compact 8-TSSOP package (0.173", 4.40mm width) provides space-efficient integration for PCB designs.
Key Features & Benefits
- 64Kbit (8K x 8) memory capacity - Ample storage for configuration data, calibration parameters, and system logs
- SPI serial interface - Industry-standard communication protocol with minimal pin count
- Wide voltage operation (1.8V - 5.5V) - Compatible with 3.3V and 5V systems without level shifters
- Industrial temperature range (-40°C to 125°C) - Reliable operation in automotive, industrial control, and outdoor applications
- Low power consumption - Ideal for battery-operated and energy-efficient designs
- 5ms write cycle time - Fast programming for efficient data updates
- Surface mount 8-TSSOP package - Compact footprint for space-constrained designs
- RoHS compliant - Meets environmental standards for lead-free manufacturing
Applications
- Industrial automation and control systems
- Automotive electronics and ECU calibration
- Medical devices and instrumentation
- Smart meters and IoT edge devices
- Configuration storage for embedded systems
- Data logging and event recording
- Security and authentication systems
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25AA640AT-E/ST.pdf