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Summit S93WD462 User Manual

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© SUMMIT MICROELECTRONICS, Inc. 2001 • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com
1
S93WD462/S93WD463
Characteristics subject to change without notice
Precision Supply-Voltage Monitor and Reset Controller
With a Watchdog Timer and 1k-bit Microwire Memory
SUMMIT
MICROELECTRONICS, Inc.
2029 2.2 1/23/01
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
• 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
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 E
2
PROM 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 capabil-
ity. The devices are designed for a minimum 100,000
program/erase cycles and have data retention in ex-
cess of 100 years.
BLOCK DIAGRAM
+
–
GND
V
CC
8
5
RESET#
6
V
TRIP
RESET
PULSE
GENERATOR
5kHz
OSCILLATOR
RESET
CONTROL
MODE
DECODE
ADDRESS
DECODER
WRITE
CONTROL
DATA I/O
E
2
PROM
MEMORY
ARRAY
RESET
7
1.26V
SK
2
DI
3
WATCHDOG
TIMER
CS
1
2029 T BD 2.0
DO
4
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Summary of Contents

Page 1 - S93WD462/S93WD463

© SUMMIT MICROELECTRONICS, Inc. 2001 • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone 408-378-6461 • Fax 408-37

Page 2

10S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc. 8 Pin SOIC 8 Pin PDIP.05 (1.27) TYP.18 Pin SOIC0.150 - 0.157(3.80 - 4.00)0.189

Page 3

11S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.Frequently the reset controller will be deployed on a PC board that provides a peri

Page 4

12S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.Ready/Busy StatusDuring the internal write operation the S93WD462/WD463 memory arra

Page 5

13S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.ORDERING INFORMATIONBlank = TubeT = Tape & ReelA = 4.5V to 5.5V VTRIP min. @ 4.

Page 6

14S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.NOTICESUMMIT Microelectronics, Inc. reserves the right to make changes to the produ

Page 7

2S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.PIN FUNCTIONSPin Name Function CS Chip Select SK Clock Input DI

Page 8

3S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.Instructions, addresses, and write data are clocked intothe DI pin on the rising edg

Page 9 - 2029 T fig08 2.0

4S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.EraseUpon receiving an ERASE command and address, theCS (Chip Select) pin must be de

Page 10 - Ref. JEDEC MS-012

5S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.SK2029 ILL 5.0CSDIDOtCSSTANDBYHIGH-ZHIGH-Z101ANAN-1A0DND0BUSYREADYSTATUSVERIFYtSVtHZ

Page 11 - 2029 T fig09 2.0

6S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.Figure 7. WRAL Instruction TimingINSTRUCTION SETInstruction Start Opcode Address Dat

Page 12 - SUMMIT MICROELECTRONICS, Inc

7S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.ABSOLUTE MAXIMUM RATINGS*Temperature Under Bias ...

Page 13 - 2029 Tree 2.0

8S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc. Limits VC

Page 14

9S93WD462/S93WD4632029 2.2 1/23/01SUMMIT MICROELECTRONICS, Inc.Figure 8. RESET Timing DiagramRESET CIRCUIT AC and DC ELECTRICAL CHARACTERISTICS

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