1

Characteristics subject to change without notice

2048 2.4. 3/1/01

SMS24

SUMMIT

MICROELECTRONICS, Inc.

©SUMMIT MICROELECTRONICS, Inc., 2001 • 300 Orchard City Dr., Suite 131 • Campbell, CA 95008 • Phone 408-378-6461 • FAX 408-378-6586 • www.summitmicro.com

l User Programmable Device Configuration

l Guaranteed Reset Valid to VCC = 1V

l Immune to Short Negative VCC Transients

l Six Unique Pin Configurations

l User Programmable Feature Options:

w Reset Threshold Voltages

w Reset Pulse Widths

w Programmable Watchdog Timeouts

w Programmable Over- or Under-Voltage Sens-

ing

l High Reliability

w Endurance: 100,000 erase/write cycles

w Data retention: 100 years

Highly Programmble Voltage Supervisory Circuit

FEATURES

DEVICE TYPES

INTRODUCTION

The SMS24 is a configurable and in-system program-

mable second generation 8 pin supervisory circuit. This

single device is adaptable to provide the optimum func-

tionality for a given system or sub-system. User program-

mable functions available — reset pulse width, watchdog

delays, and voltage monitor thresholds — eliminate exter-

nal components and allow standardization to enhance

system reliability. Additionally, 4K bits of general purpose

EEPROM is available on all configurations. The SMS24

is available in six pin configurations, and is compatible with

all Summit programmable devices and other I2C compo-

nents.

Programming of configuration, control and calibration

values by the user can be simplified with the interface

adapter and Windows GUI software obtainable from Sum-

mit Microelectronics.

2048 DTTable 2.1

NC

RESET#

NC

GND

RESET

SCL

SDA

Device

Code

001

NC

RESET#

NC

GND

WP

SCL

SDA

Device

Code

010

WDI

RESET#

NC

GND

RESET

SCL

SDA

Device

Code

011

RESET#2

RESET#1

GND

MR#

SCL

SDA

Device

Code

100

RESET#

GND

RESET

SCL

SDA

Device

Code

101

RESET#

GND

WDI

SCL

SDA

Device

Code

110

2046 DT 1.0

e

c

i

v

e

D

e

d

o

C

n

o

i

t

c

n

u

F

#

t

e

s

e

Rt

e

s

e

Rg

o

d

h

c

t

a

W

e

r

a

w

t

f

o

S

I

D

W

n

i

P

I

D

W

e

t

i

r

W

t

c

e

t

o

r

P

n

i

P

d

n

2

e

g

a

t

l

o

V

r

o

t

i

n

o

M

l

a

u

n

a

M

t

e

s

e

R

t

u

p

n

I

V

N

y

r

o

m

e

M

1

0

0

✔✔✔✔

✔

0

1

0

✔✔

✔✔

✔

1

1

0

✔✔✔

✔

✔

0

0

1

✔✔

✔

✔

✔

1

0

1

✔✔✔✔

✔

✔

0

1

1

✔✔✔✔✔