SMS24 Datasheet, PDF (1/18 Pages) Summit Microelectronics, Inc. – Highly Programmble Voltage Supervisory Circuit

SUMMIT
MICROELECTRONICS, Inc.
Highly Programmble Voltage Supervisory Circuit
SMS24
FEATURES
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
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.
Device
Code
Reset#
001
✔
010
✔
011
✔
100
✔
101
✔
110
✔
Reset
✔
✔
✔
Function
Watchdog
Software
WDI
WDI Pin
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
✔
Write
Protect
Pin
✔
2nd
Voltage
Monitor
✔
✔
Manual
Reset
Input
NV
Memory
✔
✔
✔
✔
✔
✔
✔
2048 DTTable 2.1
NC
RESET#
NC
GND
Device
Code
001
V_CC
RESET
SCL
SDA
NC
RESET#
NC
GND
Device
Code
010
V_CC
WP
SCL
SDA
WDI
RESET#
NC
GND
Device
Code
011
V_CC
RESET
SCL
SDA
RESET#2
RESET#1
V_SENSE
GND
Device
Code
100
V_CC
MR#
SCL
SDA
V_LOW#
RESET#
V_SENSE
GND
Device
Code
101
V_CC
RESET
SCL
SDA
V_LOW#
RESET#
V_SENSE
GND
Device
Code
110
V_CC
WDI
SCL
SDA
2046 DT 1.0
©SUMMIT MICROELECTRONICS, Inc., 2001 • 300 Orchard City Dr., Suite 131 • Campbell, CA 95008 • Phone [phone] • FAX [phone] • www.summitmicro.com
Characteristics subject to change without notice
2048 2.4. 3/1/01
1