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| 型号： | SP691ACT-L |
| 厂商： | Exar Corporation |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU LP 16WSOIC |
| 标准包装： | 41 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 4.65V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
| 其它名称： | SP691ACT-L-ND |
Unregulated DC
R 1
Regulated +5V
PFI
R 2
V CC
V CC
μ P
RESET
RESET
WDO
alarm
NMI
PFO
A0-A15
I/O LINE
WDI
LOWLINE
system
status
indicator
Backup
Supply
V BATT
BUS
CMOS
RAM 1
to
Address
Decode
V CC
BATT ON
CE IN
V OUT
RAM n
0.1 μ F
CE OUT
GND
Figure 17. Typical Application Circuit of the SP691A/693A/800L/800M
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.
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.
Date: 4/18/05
SP691A/693A/800L/800M Low Power Microprocessor Supervisor with Battery Switch-Over ? Copyright 2005 Sipex Corporation
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP691ACT-L/TR | 功能描述:监控电路 LW PWR MICRO 5.5V 25mA-250mA BAT SW/OV RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| SP691AEN | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP691AEN/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP691AEN-L | 功能描述:监控电路 LW PWR MICRO 5.5V 25mA-250mA BAT SW/OV RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| SP691AEN-L/TR | 功能描述:监控电路 LW PWR MICRO 5.5V 25mA-250mA BAT SW/OV RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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