Homedatasheet25AA040-/SN

25AA040-/SN Datasheet

SPI->4K to 64K
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Description

Features, Applications

DESCRIPTION

Temp. Ranges I I,E The Microchip Technology Inc. a 4 Kbit serial Electrically Erasable PROM. The memory is accessed via a simple Serial Peripheral InterfaceTM (SPITM) 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. Also, write operations to the device can be disabled via the write protect pin (WP).

FEATURES

Low power CMOS technology - Write current: 3 mA typical - Read current: 500 �A typical - Standby current: 500 nA typical x 8-bit organization 16 byte page Write cycle time: 5 ms max. Self-timed ERASE and WRITE cycles Block write protection - Protect none, 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 cycles - Data retention: > 200 years - ESD protection: 4000V 8-pin PDIP, SOIC, and TSSOP packages Temperature ranges supported: - Industrial (I): +85�C - Automotive (E) to +125�C

*25XX040 is used in this document as a generic part number for the 25AA040/25LC040/25C040 devices. SPITM is a trademark of Motorola Inc.

VCC.............................................................................................................................................................................7.0V All inputs and outputs w.r.t. VSS.......................................................................................................... to VCC+1.0V Storage to 150�C Ambient temperature under to 125�C Soldering temperature of leads (10 seconds).......................................................................................................+300�C ESD protection on all pins......................................................................................................................................... 4 KV NOTICE: Stresses above those listed under `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

DC CHARACTERISTICS Industrial (I): TAMB to +85�C Automotive (E): TAMB to +125�C Min. 2.0 0.7 VCC -0.3 VCC -0.5 -10 Standby Current Max. 0.8 0.3 VCC Units

Characteristic High level input voltage Low level input voltage Low level output voltage High level output voltage Input leakage current Output leakage current Internal Capacitance (all inputs and outputs) Operating Current

VCC 2.7V (Note) VCC< 2.7V (Note) VCC 2.7V (Note) VCC < 2.7V (Note) IOL 2.1 mA IOL = 1.0 mA, VCC < 2.5V IOH CS = VCC, VIN = VSS TO VCC CS = VCC, VOUT = VSS TO VCC TAMB = 25�C, CLK = 1.0 MHz, VCC = 5.0V (Note) VCC = 5.5V; FCLK = 3.0 MHz; SO = Open VCC = 2.5V; FCLK = 2.0 MHz; SO = Open VCC = 5.5V VCC CS = VCC = 5.5V, Inputs tied to VCC or VSS CS = VCC = 2.5V, Inputs tied to VCC or VSS

VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V (Note 1) (Note 1) VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V (Note 1) VCC to 5.5V (Note 1) VCC to 4.5V (Note 1) VCC to 2.5V (Note 1) VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V VCC to 4.5V VCC to 2.5V VCC to 5.5V (Note 1) VCC to 4.5V (Note 1) VCC to 2.5V (Note 1) VCC to 5.5V VCC to 4.5V VCC to 2.5V

CLK Rise Time CLK Fall Time Clock High Time
Clock Delay Time Clock Enable Time Output Valid from Clock Low
Output Hold Time Output Disable Time

Note 1: This parameter is periodically sampled and not 100% tested. 2: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance Model which can be obtained on our website: www.microchip.com.


Features

Parameters

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Manufacturer information

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