SUMMIT
MICROELECTRONICS, Inc.
S93462/S93463
Precision Supply-Voltage Monitor and Reset Controller
FEATURES
• Precision Monitor & RESET Controller
— RESET and RESET Outputs
— Guaranteed RESET Assertion to V
CC
= 1V
— 150ms Reset Pulse Width
— Internal 1.26V Reference with ±1% Accuracy
— ZERO External Components Required
• Memory
— 1K-bit Microwire Memory
— S93462
– Internally Ties ORG Low
– 100% Compatible With all 8-bit
Implementations
– Sixteen Byte Page Write Capability
— S93463
– Internally Ties ORG High
– 100% Compatible With all 16-bit
Implementations
– Eight Word Page Write Capability
OVERVIEW
The S93462 and S93463 are precision power supervi-
sory circuits providing both active high and active low
reset outputs.
Both devices have 1k-bits of E
2
PROM memory that is
accessible via the industry standard microwire bus. The
S93462 is configured with an internal ORG pin tied low
providing a 8-bit byte organization and the S93463 is
configured with an internal ORG pin tied high providing
a 16-bit word organization. Both the S93462 and
S93463 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.
BLOCK DIAGRAM
VCC
8
5kHz
OSCILLATOR
RESET
PULSE
GENERATOR
6
RESET#
+
–
VTRIP
RESET
CONTROL
7
RESET
1.26V
CS
1
WATCHDOG
TIMER
SK
DI
2
3
MODE
DECODE
ADDRESS
DECODER
WRITE
CONTROL
DATA I/O
DO
4
5
GND
E2PROM
MEMORY
ARRAY
2021 T BD 2.0
©
SUMMIT MICROELECTRONICS, Inc. 2001 • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com
Characteristics subject to change without notice
2021 4.2 1/23/01
1
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
