SMS2916 Datasheet, PDF (1/16 Pages) List of Unclassifed Manufacturers – Precision Voltage Supervisory Circuit With Watchdog Timer and 16K I2C Memory

SUMMIT
MICROELECTRONICS, Inc.
Preliminary
Precision Voltage Supervisory Circuit
With Watchdog Timer and 16K I²C Memory
SMS2916
3 and 5 Volt Systems
FEATURES
• Precision Voltage Monitor
– Automatic V_CC Supply Monitor
- Complementary reset outputs for complex
microcontroller systems
- Integrated memory write lockout function
- No external components required
• Watchdog Timer
– Nominal 1.6 second Timeout
• Memory Internally Organized 2K X 8
– Two Wire Serial Interface (I²C™)
• High Reliability
– Endurance: 1,000,000 erase/write cycles
– Data retention: 100 years
• 8-Pin PDIP or SOIC Packages
OVERVIEW
The SMS2916 is a power supervisory circuit that monitors
V_CC (either in a 5V system or 3V system) and will generate
complementary reset outputs. The reset pins also act as
I/Os and may be used for signal conditioning. The
SMS2916 also has an on-board watchdog timer that has
a nominal time out period of 1.6 seconds.
The SMS2916 integrates a 16K-bit nonvolatile serial
memory. It features the industry standard I²C serial
interface allowing quick implementation in an end-users’
system.
BLOCK DIAGRAM
VCC 8
5KHz
Oscillator
RESET
PULSE
GENERATOR
GND ⁴
SCL 6
SDA ₅
+
-
1.26V
EEPROM
MEMORY
ARRAY
VTRIP
RESET
CONTROL
WATCHDOG
TIMER
2 RESET
VCC
7 RESET
WDI ₁
2028 ILL2.1
SUMMIT MICROELECTRONICS, Inc. • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 • Telephone [phone] • Fax [phone] • www.summitmicro.com
© SUMMIT MICROELECTRONICS, Inc. 1998
2028-02 4/24/98
Characteristics subject to change without notice
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