OVERVIEW
The S93WD462 and S93WD463 are precision power supervisory circuits providing both active high and active low reset output. Both devices also incorporate a watchdog timer with a nominal time-out value of 1.6 seconds.
Both devices have 1k-bits of E2PROM memory that is accessible via the industry standard microwire bus. The S93WD462 is configured with an internal ORG pin tied low providing a 8-bit byte organization and the S93WD463 is configured with an internal ORG pin tied high providing a 16-bit word organization. Both the S93WD462 and S93WD463 have page write capability. The devices are designed for a minimum 100,000 program/erase cycles and have data retention in excess of 100 years.

FEATURES
• Precision Monitor & RESET Controller
   — RESET and RESET Outputs
   — Guaranteed RESET Assertion to VCC = 1V
   — 150ms Reset Pulse Width
   — Internal 1.26V Reference with ±1% Accuracy
   — ZERO External Components Required
• Watchdog Timer
   — Nominal 1.6 Second Time-out Period
   — Reset by Any Transition of CS
• Memory
   — 1K-bit Microwire Memory
   — S93WD462
      – Internally Ties ORG Low
      – 100% Compatible With all 8-bit
         Implementations
      – Sixteen Byte Page Write Capability
   — S93WD463
      – Internally Ties ORG High
      – 100% Compatible With all 16-bit
         Implementations
      – Eight Word Page Write Capability