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參數資料
| 型號： | SMS46GR04 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Quad Programmable Precision Supervisory Controller With Independent Resets and 4k-Bit Nonvolatile Memory |
| 中文描述： | 四可編程精密監控控制器，獨立重置和4K位的非易失性內存 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 918K |
| 代理商： | SMS46GR04 |
1
Characteristics subject to change without notice
2083 1.1 06/04/04
SMS46
SUMMIT
MICROELECTRONICS, Inc.
SUMMIT MICROELECTRONICS, Inc., 2004 1717 Fox Dr. San Jose, CA 95131 Phone 408-436-9890 FAX 408-436-9897
www.summitmicro.com
PRELIMINARY INFORMATION
1
(SEE LAST PAGE)
z
Operational from any of four Voltage Monitoring
Inputs
z
Four Independent Programmable Reset Outputs
z
Programmability allows monitoring any voltage
between 0.6V and 5.6V with no external
components
z
Programmable 5mV steps in the low range
z
Programmable Watchdog Timer
z
Programmable Reset Pulse Width
z
Fault Status Register
z
4k-Bit Nonvolatile General Purpose Memory
APPLICATIONS
z
Desktop/Notebook/Tablet Computers
z
Multi-voltage Systems
z
Telecom/Network Servers
z
Portable Battery-powered Equipment
z
Set-top Boxes
z
Data-storage Equipment
Quad Programmable Precision Supervisory Controller With Independent
Resets
and 4k-Bit Nonvolatile Memory
FEATURES
INTRODUCTION
The SMS46 is a highly programmable voltage supply
controller and supervisory circuit designed specifically for
advanced systems that need to monitor multiple voltages.
The SMS46 can monitor four separate voltages without the
need of any external voltage divider circuitry. This allevi-
ates the need for factory-trimmed threshold voltages and
the use of external components to accommodate different
supply voltages and tolerances.
The SMS46 has four programmable independant reset
outputs to control different devices for varying reset condi-
tions such as UV, OV, watchdog and user pushbutton
applications.
The SMS46 watchdog timer has a user programmable
time-out period and it can be placed in an idle mode for
system initialization or system debug. All of the functions
are user accessible through an industry standard I
2
C serial
interface.
Programming of configuration, control and calibration val-
ues by the user is simplified with the SMX3200 interface
adapter and Windows GUI software obtainable from Sum-
mit Microelectronics.
SIMPLIFIED APPLICATION DRAWING
Figure 1 - Precision Quad Power Supply Monitor can monitor any voltage over the range of 0.6V to 5.6V.
One of the four supplies must be above 2.7V to power the SMS46.
V0
V1
V2
V3
RESET#0
RESET#3
VDD_CAP
RESET#1
RESET#2
I
2
C
3.3V
2.5V
1.8V
1.2V
SMS46
A2
A1 SDA SCL
7
6
9
10
1
16
2
3
14
MR#
Monitored
Supplies
15
WLDI
GND
8
13
12
11
5
4
0.1μF
Vpullup (0 to +12V)
uP/DSP
ASIC/FPGA
Logic
LCD
From uP
RESET#
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