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參數資料
| 型號： | SMS1242S |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| 中文描述： | 為2.5V，3V，3.3V的 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 82K |
| 代理商： | SMS1242S |
SUMMIT MICROELECTRONICS, Inc. 2000 300 Orchard City Drive, Suite 131 Campbell, CA 95008 Phone 408-378-6461 Fax 408-378-6586 www.summitmicro.com
1
Characteristics subject to change without notice
2038 2.0 6/8/00
SUMMIT
MICROELECTRONICS, Inc.
2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset
Microprocessor Supervisory Circuits
SMS1242
FEATURES
Supply voltage monitor
- Nominal V
RST
of 2.45V, 2.65V, 2.95V, 4.45V,
4.55V or 4.65V
- RESET# Outputs Guaranteed true at V
CC
= 1V
- 150ms Reset Delay Time
Second voltage monitor
- V
SENSE
Input
- 1.25V threshold ±1%
Manual Reset Input
Includes 16k-bits nonvolatile memory
- Industry standard 2-wire serial interface
OVERVIEW
The SMS1242 microprocessor supervisory circuit re-
duces the complexity and number of components required
to monitor the supply voltage in +5V, +3V and +2.5V
systems. The SMS1242 will significantly improve system
reliability and accuracy when compared to implementing
the same functions with discrete components.
The SMS1242 provides reset output during power-up,
power-down, and brown-out conditions. It has a 1.25V
threshold input detector for power-fail warning, low battery
detection, or monitoring a secondary power supply. The
part also integrates a separate active low manual reset
input.
It also has 16k-bits of nonvolatile memory accessible over
an industry standard 2-wire serial interface.
FUNCTIONAL BLOCK DIAGRAM
+
–
GND
VCC
8
4
RESET1#
2
VTRIP
RESET
GENERATOR
7
1.25V
SCL
6
SDA
5
2038 BD 2.0
NONVOLATILE
MEMORY
ARRAY
VSENSE
3
MR#
1
+
–
RESET2#
相關PDF資料 |
PDF描述 |
|---|---|
| SMS1242S-A | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-B | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-C | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-D | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-E | 2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SMS1242S-A | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-B | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-C | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-D | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
| SMS1242S-E | 制造商:SUMMIT 制造商全稱:SUMMIT 功能描述:2.5V, 3V, 3.3V & 5V Dual Voltage, Dual Reset Microprocessor Supervisory Circuits |
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