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 the device 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.
●Features:
●• Low-power CMOS technology:
●\- Write current: 3 mA maximum
●\- Read current: 500µA 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°Cto +85°C
●\- Automotive (E): -40°C to +125°C
