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參數(shù)資料
| 型號： | SP693A |
| 英文描述： | Low Power Microprocessor Supervisory with Battery Switch-Over(低功耗，微處理器監(jiān)控電路（帶電池開關(guān)）) |
| 中文描述： | 低功耗微處理器監(jiān)控與電池開關(guān)過（低功耗，微處理器監(jiān)控電路（帶電池開關(guān)）） |
| 文件頁數(shù)： | 10/23頁 |
| 文件大?。?/td> | 223K |
| 代理商： | SP693A |
SP691A DS/04 SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over Copyright 2000 Sipex Corporation
10
FEATURES
The
SP691A/693A/800L/800M
devices are
microprocessor (
μ
P) supervisory circuits that
monitor the power supplied to digital circuits
such as microprocessors, microcontrollers, or
memory. The
SP691A/693A/800L/800M
series
is an ideal solution for portable, battery-
powered equipment that require power supply
monitoring. The
SP691A/693A/800L/800M
watchdog functions will continuously oversee
the operational status of a system. Implementing
the
SP691A/693A/800L/800M
series will
reduce the number of components and overall
complexity in a design that requires power
supply monitoring circuitry. The operational
features and benefits of this series
are described
in more detail below.
Figure 17. Typical Application Circuit of the SP691A/693A/800L/800M
RESET
NMI
I/O LINE
V
CC
RESET
PFO
WDI
GND
V
BATT
R
2
R
1
Unregulated DC
Regulated +5V
V
CC
PFI
μ
P
CMOS
RAM
1
to
RAM
n
CE
OUT
BATT ON
V
OUT
Address
Decode
BUS
CE
IN
Backup
Supply
V
CC
A0-A15
0.1
μ
F
alarm
system
status
indicator
WDO
LOWLINE
THEORY OF OPERATION
The
SP691A/693A/800L/800M
series is a
complete
μ
P supervisor IC and provides the
following main functions:
1)
μ
P reset
Reset output is asserted during
power fluxiations such as power-up,
power-down, and brown out conditions, and
is guaranteed to be in the correct state for
V
CC
down to 1V, even with no battery in
the circuit.
2)
μ
P reset
Reset output is pulsed if the
optional watchdog timer has not been
toggled within a specified time.
3) Power Fail Comparator
Provides for
power-fail warning and low-battery
detection, or monitors another power
supply.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP691A | Low Power Microprocessor Supervisory with Battery Switch-Over(低功耗，微處理器監(jiān)控電路（帶電池開關(guān)）) |
| SP703 | Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP703CN | Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP703CP | Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP703EN | Low Power Microprocessor Supervisory with Battery Switch-Over |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP693ACN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP693ACN/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP693ACP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP693ACP-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP693ACT | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
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