Catalyst's new supervisors support MCU-based systems

Expanding its family of supervisors with embedded EEPROM memory, Catalyst Semiconductor Inc. announced the availability of its 32K and 64K devices. The new CAT1320/21 (32K) and CAT1640/41 (64K) supervisors support reliable operation for microcontroller-based systems during power-up, power-down and all transitional power events.

"Our [Catalyst] supervisors with memory provide an integrated solution for designers that demand robust and reliable system operation, while providing mid-density serial EEPROM to store critical information," said Barr Karagozlu, Product Marketing. "This integrated solution, in addition to Catalyst's supervisors with 2K and 16K memory, offers our customers a cost effective solution in a small package, with five different threshold voltage selections."

The two new product families feature a 64-byte page write operation for the serial EEPROM, and is cascadable for up to eight devices on the same I?C bus. Both devices provide a 200ms reset time-out during power up/down; and during this time, writing to the EEPROM is disabled which eliminates the possibility of data corruption. In addition, the RESET pin can operate either as a regular output, or as a manual input that is internally de-bounced.

Rated for operation between the -40°C to 125°C temperature range, the CAT1640/41 and CAT1320 feature five threshold voltage options (2.55-, 2.85-, 3-, 4.25- and 4.55V), valid reset assertion down to 1V and low power CMOS.

The two product families are available in 8-pin PDIP, SOIC, TSSOP and 8-pad TDFN packages; and are priced at $1.07 for CAT1640/41 and 99 cents for the CAT1320/21, both in 1,000-piece orders.

Both devices are available in environment friendly "green" packages that are halogen- and PB-free with full RoHS compliance. Samples and production quantities are already available.