Product Overview
The Microchip AT25512-TH-B is a 512Kb SPI Serial EEPROM organized as 64K x 8, housed in an 8-pin TSSOP package. Operating from 1.8V to 5.5V with a 20MHz maximum clock frequency, it supports SPI modes 0 and 3. The device features block write protection (1/4, 1/2, or entire array), hardware write protect pin, self-timed write cycles (5ms max), 1 million erase/write cycle endurance, and 100-year data retention over the industrial temperature range of -40°C to +85°C.
Key Specifications
| Density | 512 Kbit (64K x 8) |
| Interface | SPI (modes 0 and 3) |
| Max Clock Frequency | 20 MHz |
| Operating Voltage | 1.8V to 5.5V |
| Page Size | 128 bytes |
| Write Cycle Time | 5 ms max (self-timed) |
| Endurance | 1,000,000 write cycles |
| Data Retention | 100 years |
| Operating Temperature | -40°C to +85°C |
| Package | 8-TSSOP (3.1 x 4.5 mm) |
Features
- 512Kb SPI serial EEPROM with 64K x 8 organization
- Supports SPI modes 0 and 3
- Up to 20MHz clock frequency
- Block write protection: 1/4, 1/2, or entire array
- Hardware write protect pin for status register protection
- Self-timed erase and write cycles (5ms max)
- More than 1 million erase/write cycles
- 100-year data retention
- Low standby current: 3uA max at 1.8V
- Factory programming available
Applications
- Consumer electronics parameter storage
- Industrial control system configuration
- Medical device calibration data
- Automotive electronics (qualified versions available)
- Embedded system boot and configuration storage
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