DS2502
Key Features
- 1024 bits Electrically Programmable Read Only Memory (EPROM) municates with the economy of one signal plus ground
- Built-in multidrop controller ensures patibility with other MicroLANTM products
- EPROM partitioned into four 256-bit pages for ran- domly accessing packetized data records
- Each memory page can be permanently write-pro- tected 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 super- seding an old page in favor of a newly programmed page
- Reduces control, address, data, power, and program- ming signals to a single data pin
- Directly connects to a single port pin of a microproces- sor and municates at up to 16.3k bits per second
- 8-bit family code specifies DS2502 munications requirements to reader
- Presence detector acknowledges when reader first applies voltage
