AT25FS040 데이터 시트보기 (PDF) - Atmel Corporation

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AT25FS040

High Speed Small Sectored SPI Flash Memory

Atmel Corporation 

The AT25FS040 is enabled through the Chip Select pin (CS) and accessed via a 3-wire inter-

face consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All

write cycles are completely self-timed.

BLOCK WRITE protection for upper 1/64, 1/32, 1/16, 1/8, 1/4, 1/2 or the entire memory array is

enabled by programming the status register. Separate write enable and write disable instruc-

tions are provided for additional data protection. Hardware data protection is provided via the

WP pin to protect against inadvertent write attempts to the status register. The HOLD pin may be

used to suspend any serial communication without resetting the serial sequence.

1. Absolute Maximum Ratings*

Operating Temperature....................................–40°C to +85°C

Storage Temperature .....................................–65°C to +150°C

Voltage on Any Pin

with Respect to Ground .................................... –1.0V to +5.0V

Maximum Operating Voltage ............................................ 4.2V

DC Output Current........................................................ 5.0 mA

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect

device reliability.

Figure 1-1. Block Diagram

524,288 x 8

2 AT25FS040

5107E–SFLSH–8/07

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