7. Read Operations..................................................................................................... 27

7.1.

Current Address Read within the EEPROM...............................................................................27

7.2.

Random Read within the EEPROM........................................................................................... 28

7.3.

Sequential Read within the EEPROM........................................................................................ 28

7.4.

Read Operations in the Security Register.................................................................................. 29

7.5.

Manufacturer ID Read................................................................................................................ 30

8. ROM Zones............................................................................................................. 32

8.1.

ROM Zone Size and ROM Zone Registers................................................................................ 32

8.2.

Programming and Reading the ROM Zone Registers................................................................32

8.3.

Device Response to a Write Command Within an Enabled ROM Zone.................................... 34

9. Device Default Condition from Microchip................................................................ 36

10. Packaging Information.............................................................................................37

10.1. Package Marking Information.....................................................................................................37

11. Revision History.......................................................................................................42

The Microchip Web Site................................................................................................ 43

Customer Change Notification Service..........................................................................43

Customer Support......................................................................................................... 43

Product Identification System........................................................................................44

Microchip Devices Code Protection Feature................................................................. 45

Legal Notice...................................................................................................................45

Trademarks................................................................................................................... 45

Quality Management System Certified by DNV.............................................................46

Worldwide Sales and Service........................................................................................47

AT21CS01/AT21CS11

Datasheet

DS20005857A-page 5