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) DATASHEET Features 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, V = 2.5V to 5.5V CC (1) Grade 2 and 3, V = 1.7V to 5.5V CC (1) Extended Temperature Range (Grade 1, 2 , and 3 as defined in AEC-Q100) Grade 1 Temperature Range: -40C to 125C (1) Grade 2 Temperature Range : -40 C to 105C Grade 3 Temperature Range: -40C to 85C 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 092016Table 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 Automotive Grade 1, V = 2.5V to 5.5V . 17 CC 8.2.2 Automotive Grade 3, V = 1.7V to 5.5V . 18 CC 8.2.3 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