Rainbow-electronics AT25640 Uživatelský manuál stáhnout pdf

Features

• Serial Peripheral Interface (SPI) Compatible

• Supports SPI Modes 0 (0,0) and 3 (1,1)

• Medium-voltage and Standard-voltage Operation

– 5.0 (V

= 4.5V to 5.5V)

– 2.7 (V

= 2.7V to 5.5V)

• 3.0 MHz Clock Rate (5V)

• 32-byte Page Mode

• Block Write Protection

– Protect 1/4, 1/2, or Entire Array

• Write Protect (WP) Pin and Write Disable Instructions for

both Hardware and Software Data Protection

• Self-timed Write Cycle (5 ms Typical)

• High-reliability

– Endurance: One Million Write Cycles

– Data Retention: 100 Years

• 8-lead PDIP and 8-lead JEDEC SOIC Packages

Description

The AT25080/160/320/640 provides 8192/16384/32768/65536 bits of serial electri-

cally-erasable programmable read only memory (EEPROM) organized as

1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in many

automotive applications where low-power and low-voltage operation are essential.

The AT25080/160/320/640 is available in space saving 8-lead PDIP and 8-lead

JEDEC SOIC packages.

The AT25080/160/320/640 is enabled through the Chip Select pin (CS

) and accessed

via a 3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and

Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-

rate ERASE cycle is required before WRITE.

BLOCK WRITE protection is enabled by programming the status register with one of

four blocks of write protection. Separate program enable and program 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.

SPI Serial

Automotive

EEPROMs

8K (1024 x 8)

16K (2048 x 8)

32K (4096 x 8)

64K (8192 x 8)

AT25080

AT25160

AT25320

AT25640

3260D–SEEPR–9/03

Pin Configuration

Pin Name Function

Chip Select

SCK Serial Data Clock

SI Serial Data Input

SO Serial Data Output

GND Ground

VCC Power Supply

Write Protect

HOLD

Suspends Serial Input

NC No Connect

DC Don’t Connect

8-lead PDIP

GND

VCC

HOLD

SCK

8-lead SOIC

GND

VCC

HOLD

SCK

1 2 3 4 5 6 ... 18 19

Shrnutí obsahu

Strany 1 - Pin Configuration

1Features• Serial Peripheral Interface (SPI) Compatible• Supports SPI Modes 0 (0,0) and 3 (1,1)• Medium-voltage and Standard-voltage Operation– 5.0 (V

Strany 2

10AT25080/160/320/6403260D–SEEPR–9/03Timing DiagramsSynchronous Data Timing (for Mode 0) WREN Timing WRDI Timing SOVOHVOLHI-ZHI-ZtVVALID INSIVIHVIL

Strany 3

11AT25080/160/320/6403260D–SEEPR–9/03RDSR Timing WRSR Timing CSSCK01234567891011121314SIINSTRUCTIONSO76543210DATA OUTMSBHIGH IMPEDANCE15HIGH IMPEDAN

Strany 4

12AT25080/160/320/6403260D–SEEPR–9/03READ Timing WRITE Timing HOLD Timing CSSCKSISO000111222333...44556677891015 14 1311 20 21 22 23 24 25 26 27 28

Strany 5

13AT25080/160/320/6403260D–SEEPR–9/03 AT25080 Ordering InformationOrdering Code Package Operation RangeAT25080-10PA-5.0CAT25080N-10SA-5.0C8P38S1Automo

Strany 6

14AT25080/160/320/6403260D–SEEPR–9/03AT25160 Ordering InformationOrdering Code Package Operation RangeAT25160-10PA-5.0CAT25160N-10SA-5.0C8P38S1Automot

Strany 7

15AT25080/160/320/6403260D–SEEPR–9/03AT25320 Ordering InformationOrdering Code Package Operation RangeAT25320-10PA-5.0CAT25320N-10SA-5.0C8P38S1Automot

Strany 8

16AT25080/160/320/6403260D–SEEPR–9/03AT25640 Ordering InformationOrdering Code Package Operation RangeAT25640-10PA-5.0CAT25640N-10SA-5.0C8P38S1Automot

Strany 9

17AT25080/160/320/6403260D–SEEPR–9/03Packaging Information8P3 – PDIP 2325 Orchard ParkwaySan Jose, CA 95131TITLEDRAWING NO.RREV. 8P3, 8-lead, 0.300&

Strany 10 - AT25080/160/320/640

18AT25080/160/320/6403260D–SEEPR–9/038S1 – JEDEC SOIC 2325 Orchard Parkway San Jose, CA 95131TITLEDRAWING NO.RREV. Note:10/10/018S1, 8-lead (0.15

Strany 11

Printed on recycled paper.3260D–SEEPR–9/03 xMDisclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly

Strany 12

2AT25080/160/320/6403260D–SEEPR–9/03 Block Diagram Absolute Maximum Ratings*Operating Temperature... -55°C to +125°C*N

Strany 13

3AT25080/160/320/6403260D–SEEPR–9/03Pin Capacitance(1) Note: 1. This parameter is characterized and is not 100% tested.DC Characteristics(1) Note: 1

Strany 14

4AT25080/160/320/6403260D–SEEPR–9/03Note: 1. This parameter is characterized and is not 100% tested. AC Characteristics Applicable over recommended op

Strany 15

5AT25080/160/320/6403260D–SEEPR–9/03Serial Interface DescriptionMASTER: The device that generates the serial clock.SLAVE: Because the Serial Clock pin

Strany 16

6AT25080/160/320/6403260D–SEEPR–9/03SPI Serial Interface

Strany 17

7AT25080/160/320/6403260D–SEEPR–9/03Functional DescriptionThe AT25080/160/320/640 is designed to interface directly with the synchronous serial periph

Strany 18

8AT25080/160/320/6403260D–SEEPR–9/03WRITE STATUS REGISTER (WRSR): The WRSR instruction allows the user to select one offour levels of protection. The

Strany 19 - Regional Headquarters

9AT25080/160/320/6403260D–SEEPR–9/03READ SEQUENCE (READ): Reading the AT25080/160/320/640 via the SO (Serial Output)pin requires the following sequenc

Komentáře k této Příručce

Žádné komentáře

Rainbow-electronics AT25640 Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Úložný prostor Rainbow-electronics AT25640. Rainbow Electronics AT25640 User Manual Uživatelská příručka

Shrnutí obsahu

Komentáře k této Příručce

Související produkty a manuály pro Úložný prostor Rainbow-electronics AT25640