25AA320

Features:

• Low-power CMOS technology:
   - Write current: 3 mA maximum
   - Read current: 500 A typical
   - Standby current: 500 nA typical
• 4096 x 8 bit organization
• 32 byte page
• Write cycle time: 5 ms maximum
• Self-timed erase and write cycles
• Block write protection:
   - 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
• Sequential read
• High reliability:
   - Endurance: 1M E/W cycles
   - Data retention: > 200 years
   - ESD protection: > 4000V
• 8-pin PDIP, SOIC and TSSOP packages
• 14-lead TSSOP package
• Temperature ranges supported:
   - Industrial (I):                  -40 to +85
   - Automotive (E):            -40  to +125


Pinout




Specifications

VCC............................................................................................................................................................................7.0V
All inputs and outputs w.r.t. VSS ..................................................................................................... -0.6V to VCC + 1.0V
Storage temperature ................................................................................................................................-65 to 150
Ambient temperature under bias............................................................................................................... -40to 125
ESD protection on all pins.........................................................................................................................................4 kV


Description

The Microchip Technology Inc. 25AA320/25LC320/ 25C320 (25XX320*) are 32 Kbit serial Electrically Erasable PROMs. 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 through a Chip Select (CS) input.

Communication to 25AA320/25LC320/ 25C320 (25XX320*) 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.