The CAT93CXXXX is a single chip solution to three popular functions of EEPROM memory, precision reset controller and watchdog timer. The serial EEPROM memory of the 93CXXXX can be configured either by 16- bits or by 8-bits. Each register can be written (or read) by using the DI (or DO pin). The reset function of the 93CXXXX protects the system during brown out and power up/down conditions. During system failure the watchdog timer feature protects the microcontroller with a reset signal. Catalyst's advanced CMOS technology substantially reduces device power requirements. The 93CXXXX is available in 8-pin DIP, 8- pin TSSOP or 8-pin SOIC packages. It is designed to endure 1,000,000 program/erase cycles and has a data retention of 100 years.
The CAT93CXXXX series is a single‑chip Microwire serial EEPROM offering 1 K to 16 K bits of non‑volatile memory with built‑in precision reset controller and watchdog timer. It is available in 8‑pin DIP, TSSOP and SOIC packages for commercial, industrial and automotive applications.
Key sections cover electrical characteristics, absolute maximum ratings, pinout diagrams, instruction set details, reset circuit behavior, and ordering information. The document also describes device operation, including read, write, page‑write, erase, and enable/disable procedures, as well as reliability data such as endurance and data‑retention specifications.
| Program/Erase Cycles | 1,000,000 cycles per byte |
|---|---|
| Data Retention | 100 years |
| Operating Voltage (Vcc) | 2.7 V to 6.0 V |
| Maximum Clock Frequency | 3 MHz |
| Power Supply Current (Write) | 3 mA |
| Power Supply Current (Read) | 1 mA |
| Temperature Range | -40 °C to +125 °C (commercial/industrial/automotive) |
The device is rated for up to 1,000,000 program/erase cycles per byte.
Data is retained for 100 years under specified conditions.
The device operates from 2.7 V to 6.0 V.