3 EEPROM Memory
The EEPROM memory is divided into data zone with slots and a configuration zone made up of several subzones. Each data slots or configuration subzones can be locked independently.
Terms discussed within this document will have the following meanings:
| Term | Meaning |
|---|---|
| Block | A single 256-bit (32-byte) area of a slot in the Data zone. Data slots will have between 1 and 10 blocks. The industry SHA-256 documentation also uses the term “block” to indicate a 512-bit section of the message input. Within this document, this convention is used only when describing hash input messages. |
| Configuration Subzone | A portion of the Configuration zone that stores device identification or configuration information. Each subzone can be individually locked. |
| Data Zone Slot | A separate portion of the Data zone that stores customer-specific data. Each slot can be individually locked. |
| KeyID | KeyID is equivalent to the slot number for those slots designated to hold key values. |
| mode[b] | Indicates bit b of the parameter mode. |
| SRAM | Contains input and output buffers. |
| LSB/MSB | Least Significant Byte/Most Significant Byte. |
| LSb/MSb | Least Significant bit/Most Significant bit. |