1/2/4-Kbit SPI Serial EEPROM, Industrial Grade

1 Package Types (not to scale)

2 Pin Description

2.1 Chip Select (CS)

2.2 Serial Data Output (SO)

2.3 Write-Protect (WP)

2.4 Ground (GND)

2.5 Serial Data Input (SI)

2.6 Serial Data Clock (SCK)

2.7 Suspend Serial Input (HOLD)

2.8 Device Power Supply (V_CC)

3.1 SPI Bus Host Connections to Serial EEPROMs

3.2 Block Diagram

4 Electrical Characteristics

4.1 Absolute Maximum Ratings

4.2 DC and AC Operating Range

4.3 DC Characteristics

4.4 AC Characteristics

4.5 SPI Synchronous Data Timing

4.6 Electrical Specifications

5 Device Operation

5.1 Interfacing the AT25010B/AT25020B/AT25040B on the SPI Bus

5.2 Device Opcodes

5.3 Hold Function

5.4 Write Protection

6 Device Commands and Addressing

6.1 STATUS Register Bit Definition and Function

6.2 Read STATUS Register (RDSR)

6.3 Write Enable (WREN) and Write Disable (WRDI)

6.4 Write STATUS Register (WRSR)

7 Read Sequence

8 Write Sequence

8.3 Polling Routine

9 Packaging Information

9.1 Package Marking Information

10 Revision History

11 Product Identification System

Microchip Information

Microchip Devices Code Protection Feature

DS20006251C

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