25AA1024T-I/MF

The 25AA1024 is a 1024-Kbit serial EEPROM memory with byte-level and page-level serial EEPROM functions. It also features Page, Sector and Chip erase instructions typically associated with Flash-based products. These instructions are not required for byte or page write operations. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled by a Chip Select (CS) input. Communication to the device can be paused via the hold pin (\(\overline{{\mathsf{H O L D}}}\)). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.

Key features

• Maximum Clock: 20 MHz
• Byte and Page-level Write Operations:
• 256 byte page
• 6 ms maximum write cycle time
• No page or sector erase required
• Low-Power CMOS Technology:
• Max. Write current: 7 mA at 5.5V
• Max. Read current: 10 mA at 5.5V, 20 MHz
• Standby current: 1 μA at 2.5V, \(85^{\circ}C\) (Deep Power-down)
• Electronic Signature for Device ID Self-Timed Erase and Write Cycles:
• Page Erase (6 ms maximum)
• Sector Erase (10 ms maximum)
• Chip Erase (10 ms maximum)
• Sector Write Protection (32K byte/sector):
• Protect none, 1/4, 1/2 or all of array
• Built-in Write Protection:
• Power-on/off data protection circuitry
• Write enable latch
• Write-protect pin
• High Reliability:
• Endurance: 1M erase/write cycles
• Data Retention: > 200 years
• ESD Protection: 4000V
• Temperature Ranges Supported:
• Industrial (I): \(-40^{\circ}C\) to \(+85^{\circ}C\)
• RoHS Compliant
• Automotive AEC-Q100 Qualified