25AA1024

Features:

• Max. clock 20 MHz
• Flash and byte-level serial EEPROM operation
• Low-power CMOS technology
- Max. Write Current: 5 mA at 5.5V, 20 MHz
- Read Current: 10 mA at 5.5V, 20 MHz
- Standby Current: 1A at 5.5V (Deep powerdown)
• 131,072 x 8-bit organization
• Byte and Page (256 byte page) Write Operations(5 ms max.)
• Electronic Signature for device ID
• Self-timed ERASE and WRITE cycles
- Sector Erase (1 second/sector typical)
- Bulk Erase (2 seconds typical)
• 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: 100,000 erase/write cycles
• Temperature ranges supported;
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
• Standard and Pb-free packages available




Pinout






Specifications

Parameter Name	Value
Density	1024K bits (x8)
Max. Clock Freq.	20 MHz
Page Size (bytes)	256
Write Protect	Quarter, Half, Whole Array
Endurance	1,000,000
Op. Volt Range (V)	1.8 to 5.5
Temp Range (°C)	-40°C to +85°C

Absolute Maximum Ratings (†)
V_CC.......................................................................................6.5V
All inputs and outputs w.r.t. V_SS.................. -0.6V to V_CC +1.0V
Storage temperature .......................................-65°C to 150°C
Ambient temperature under bias......................-40°C to 125°C
ESD protection on all pins .....................................................4 kV

† NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an
extended period of time may affect device reliability.

Description

The Microchip Technology Inc. 25AA1024/25LC1024 (25XX1024*)  is a 1024 Kbit serial EEPROM memory with byte-level and page-level serial EEPROM functions. It also features Page, Sector and Chip erase functions typically associated with Flash-based products. These functions are not required for byte or page write operations.

The Microchip Technology Inc. 25AA1024/25LC1024 (25XX1024*) is a 1024 Kbit serial reprogrammable Flash memory with both Flash and byte-level serial EEPROM functions. The memory is accessed via a simple Serial Peripheral Interface™ (SPI™) compatibleserial 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 25AA1024/25LC1024 (25XX1024*) can be paused via the hold pin (HOLD). 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.

The 25AA1024/25LC1024 (25XX1024*)  is available in standard packages including 8-lead PDIP and SOIC, and advanced 8-lead DFN package. Pb-free (Pure Sn) finish is also available.