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參數(shù)資料
| 型號： | CAT825ZTDI-G |
| 英文描述： | System Supervisory Voltage Reset with Watchdog and Manual Reset |
| 中文描述： | 系統(tǒng)監(jiān)控電壓復(fù)位，帶有看門狗和手動復(fù)位 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 210K |
| 代理商： | CAT825ZTDI-G |
CAT823, CAT824, CAT825
Doc. No. MD-3027 Rev. A
10
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
APPLICATION NOTES
μP’s with Bidirectional Reset Pins
The ˉˉˉˉˉˉ output can be pulled low by processors
like the 68HC11 allowing for a system reset issued by
the processor. The maximum pullup current that can
be sourced by the CAT82_L/M is 1.5mA (and by the
CAT82_T/R/S/Z/Y is 800μA) allowing the processor to
pull the output low even when the CAT82x is pulling it
high.
Power Transients
Generally short duration negative-going transients of
less than 2μs on the power supply at V
RST
minimum
will not cause a reset condition. However the lower
the voltage of the transient the shorter the required
time to cause a reset output. These issues can
usually be remedied by the proper location of bypass
capacitance on the circuit board.
OUTPUT VALID CONDITIONS
The ˉˉˉˉˉˉ output uses a push-pull output which can
maintain a valid output down to a V
CC
of 1.0 volts. To
sink current below 0.8V a resistor can be connected
from ˉˉˉˉˉˉ to Ground (see Figure 8.) This
arrangement will maintain a valid value on the ˉˉˉˉˉˉ
output during both power up and down but will draw
current when the ˉˉˉˉˉˉ output is in the high state. A
resistor value of about 100k
should be adequate in
most situations to maintain a low condition valid
output down to V
CC
equal to 0V.
Figure 8. ˉ ˉ ˉ ˉ ˉ ˉ Valid to 0 Volts V
CC
100k
CAT823
V
CC
GND
WDI
MR
μC
RESET
RESET
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT825ZTDI-GT3 | 功能描述:監(jiān)控電路 act low act hi/MR RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT853CTBI-GT3 | 功能描述:監(jiān)控電路 Open Collect/DrainLo 320mW 1.2V-5.5V RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT853JTBI-T3 | 制造商:ON Semiconductor 功能描述:SUP OPEN DRAIN ACT LOW - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / SUP OPEN DRAIN ACT LOW |
| CAT853LTBI-T3 | 制造商:ON Semiconductor 功能描述:SUP OPEN DRAIN ACT LOW - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / SUP OPEN DRAIN ACT LOW |
| CAT853MTBI-GT3 | 功能描述:監(jiān)控電路 Open drain Act low RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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