ATSHA204A datasheet(4/93 Pages) MICROCHIP

4 / 93 page

8.1.

I/O Blocks................................................................................................................................... 42

8.2.

Sleep Sequence......................................................................................................................... 43

8.3.

Idle Sequence............................................................................................................................ 43

8.4.

Watchdog Failsafe......................................................................................................................43

8.5.

Command Sequence..................................................................................................................44

9. Compatibility............................................................................................................ 66

10. Mechanical.............................................................................................................. 67

10.1. Pinout......................................................................................................................................... 67

11. Package Marking Information..................................................................................68

12. Package Drawings...................................................................................................69

12.1. 8-pad UDFN............................................................................................................................... 69

12.2. 8-lead SOIC................................................................................................................................72

12.3. 8-lead TSSOP............................................................................................................................ 75

12.4. 3 Lead Contact........................................................................................................................... 77

12.5. 3-lead SOT23............................................................................................................................. 79

13. Reference and Application Notes............................................................................ 83

13.1. SHA-256.....................................................................................................................................83

13.2. HMAC/SHA-256......................................................................................................................... 83

13.3. Key Values................................................................................................................................. 84

14. Revision History.......................................................................................................88

The Microchip Web Site................................................................................................ 89

Customer Change Notification Service..........................................................................89

Customer Support......................................................................................................... 89

Product Identification System........................................................................................90

Microchip Devices Code Protection Feature................................................................. 91

Legal Notice...................................................................................................................91

Trademarks................................................................................................................... 91

Quality Management System Certified by DNV.............................................................92

Worldwide Sales and Service........................................................................................93

ATSHA204A

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