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參數資料
| 型號： | CAT825STDI-G |
| 英文描述： | System Supervisory Voltage Reset with Watchdog and Manual Reset |
| 中文描述： | 系統監控電壓復位，帶有看門狗和手動復位 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 210K |
| 代理商： | CAT825STDI-G |
CAT823, CAT824, CAT825
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-3027, Rev. A
System Supervisory Voltage Reset with
Watchdog and Manual Reset
FEATURES
Automatically restarts microprocessor after
Power failure
Monitors pushbutton for external override
Accurate under voltage system monitoring
Brownout detection system reset for use with
3.0, 3.3, and 5.0 volt systems
Pin and function compatible with the
MAX823/24/25 products
Operating Range from -40°C to +85°C
Available in TSOT-23 5-lead and SC-70 packages
For Ordering Information details, see page 13.
APPLICATIONS
Microprocessor and Microcontroller based
systems
Intelligent Instruments
Control Systems
Critical μP Monitors
Portable Equipment
DESCRIPTION
The CAT823, CAT824, and CAT825 provide basic
reset and monitoring functions for the electronic
systems. Each device monitors the system voltage
and maintains a reset output until that voltage reaches
the device’s specified trip value and then maintains
the reset output active condition until the device’s
internal timer, after a minimum timer of 140ms; to
allow the systems power supply to stabilize.
The CAT823 and CAT824 also have a watchdog input
which can be used to monitor a system signal and
cause a reset to be issued if the signal fails to change
state prior to a timeout condition.
The CAT823 and CAT825 also provide a manual
reset input which can be used to initiate reset if pulled
low. This input can be directly attached to a push-
button or a processor signal.
PIN CONFIGURATION
TSOT-23 5-Lead
SC-70 5-Lead
PIN FUNCTIONS
Pin Name Function
RESET
CMOS Push-Pull Active Low Reset
Output
Ground
Manual Reset input – Pulled high
Internally by a 52k
resistor designed
to be driven low by a mechanical
pushbutton, open drain output or CMOS
output.
CMOS Push-Pull Active High Reset
Output
Watchdog Timer Input – Designed to be
driven by a processor output or can be
disabled by tri-stating or leaving open.
Power Supply
GND
MR
RESET
WDI
V
CC
VCC
CAT823
MR
2
3
1
WDI
5
4
RESET
GND
RESET
MR
VCC
CAT824
RESET
2
3
1
WDI
5
4
RESET
GND
VCC
CAT825
RESET
2
3
1
5
4
GND
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| CAT825TSDI-G | System Supervisory Voltage Reset with Watchdog and Manual Reset |
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| CAT825YSDI-G | System Supervisory Voltage Reset with Watchdog and Manual Reset |
| CAT825YTDI-G | System Supervisory Voltage Reset with Watchdog and Manual Reset |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CAT825STDI-GT3 | 功能描述:監控電路 act low act hi/MR RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT825TSDI-G | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:System Supervisory Voltage Reset with Watchdog and Manual Reset |
| CAT825TSDI-GT3 | 功能描述:監控電路 SUP ACT LOW ACT HI MR RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT825TTDI-G | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:System Supervisory Voltage Reset with Watchdog and Manual Reset |
| CAT825TTDI-GT3 | 功能描述:監控電路 act low act hi/MR RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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