DS2501 Overview
The DS2501 512-bit add-only memory identifies and stores relevant information about the product to which it is associated. This lot- or product-specific information can be accessed with minimal interfacefor example, a single port pin of a microcontroller. The DS2501 consists of a factory-lasered registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit family code (11h) plus 512...
DS2501 Key Features
- 512 bits Electrically Programmable Read Only Memory (EPROM) municates with the economy of one signal plus ground
- Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48bit serial number + 8-bit CRC teste
- Built-in multidrop controller ensures patibility with other MicroLAN products
- EPROM partitioned into two 256-bit pages for randomly accessing packetized data
- Each memory page can be permanently write-protected to prevent tampering
- Device is an “add-only” memory where additional data can be programmed into EPROM without disturbing existing data
- Architecture allows software to patch data by superseding an old page in favor of a newly programmed page
- Reduces control, address, data, power, and programming signals to a single data pin
- Directly connects to a single port pin of a microprocessor and municates at up to 16.3 kbps
- 8-bit family code specifies DS2501 munications requirements to reader
