Atmel Electronic Components Datasheet

AT25640B Datasheet

SPI Automotive Temperature Serial EEPROMs

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AT25080B, AT25160B, AT25320B, and AT25640B

SPI Automotive Temperature Serial EEPROMs

8K (1,024 x 8), 16K (2,048 x 8), 32K (4,096 x 8), 64K (8,192 x 8)

Features

DATASHEET

 Serial Peripheral Interface (SPI) Compatible

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

̶ Datasheet Describes Mode 0 Operation

 Low-voltage, Medium-voltage and High-voltage Operation

̶ Grade 1, VCC = 2.5V to 5.5V

̶ Grade 2(1) and 3, VCC = 1.7V to 5.5V

 Extended Temperature Range (Grade 1, 2(1), and 3 as defined in AEC-Q100)

̶ Grade 1 Temperature Range: -40C to 125C

̶ Grade 2 Temperature Range(1): -40C to 105C

̶ Grade 3 Temperature Range: -40C to 85C

 5MHz Clock Rate

 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 (5ms max)

 High Reliability

̶ Endurance: 1,000,000 Write Cycles

̶ Data Retention: 100 Years

 8-lead JEDEC SOIC, 8-lead TSSOP, and 8-pad UDFN Packages

Note: 1. Contact Sales for Grade 2 Availability

Description

The Atmel® AT25080B/160B/320B/640B provides 8,192/16,384/32,768/65,536

bits of Serial Electrically-Erasable Programmable Read-Only Memory (EEPROM)

organized as 1,024/2,048/4,096/8,192 words of 8 bits each. The device is

optimized for use in many automotive applications where low-power and

low-voltage operation are essential. AT25080B/160B/320B/640B is available in

space-saving 8-lead JEDEC SOIC, 8-lead TSSOP, and 8-pad UDFN packages.

AT25080B/160B/320B/640B 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 separate 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

instructions 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.

Atmel-8803E-SEEPROM-AT25080B-160B-320B-640B-Auto-Datasheet_092016

Atmel Electronic Components Datasheet

AT25640B Datasheet

SPI Automotive Temperature Serial EEPROMs

No Preview Available !

Table of Contents

1. Pin Descriptions and Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Absolute Maximum Ratings* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4. Serial Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.1 Pin Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.2 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.3 AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7. Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.1 Power Recommendation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.1 Ordering Code Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.2 Ordering Code Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8.2.1

8.2.2

8.2.3

Automotive Grade 1, VCC = 2.5V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Automotive Grade 3, VCC = 1.7V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Legacy Ordering Code Information (Not Recommended for New Designs, NRND) . . . . . 19

8.3 Part Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9. Packaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.1 8S1 — 8-lead JEDEC SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.2 8X — 8-lead TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

9.3 8MA2 — 8-pad UDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

10. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2 AT25080B/160B/320B/640B Automotive [DATASHEET]

Atmel-8803E-SEEPROM-AT25080B-160B-320B-640B-Auto-Datasheet_092016

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AT25640B Datasheet

SPI Automotive Temperature Serial EEPROMs

AT25640B Datasheet

SPI Automotive Temperature Serial EEPROMs

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