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參數(shù)資料
| 型號： | MIC6315 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Open-Drain UP Reset Circuit |
| 中文描述： | 對外開放復(fù)位電路排水 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 66K |
| 代理商： | MIC6315 |
July, 2004
5
M9999-071504
MIC6315
Applications Information
Microprocessor Reset
The /RESET pin is asserted whenever V
CC
falls below the
reset threshold voltage or if /MR (manual reset) is forced low.
The /RESET pin remains asserted for the duration of the reset
timeout period after V
CC
has risen above the reset threshold
or /MR has returned high. The reset function ensures the
microprocessor is properly reset and powers up in a known
condition after a power failure. /RESET will remain valid with
V
CC
as low as 1.4V.
The /RESET output is a simple open-drain N-channel MOS-
FET structure. A pull-up resistor must be used to pull this
output up to some voltage. For most applications, this voltage
will be the same power supply that supplies V
CC
to the
MIC6315. It is possible however to tie this resistor to some
other voltage. This will allow the MIC6315 to monitor one
voltage while level-shifting the /RESET output to some other
voltage. The pull-up voltage must be limited to 6.0V or less
(absolute maximum) to avoid damage to the MIC6315. The
resistor must be small enough to supply current to the inputs
and leakage paths that are driven by the /RESET output.
/RESET Valid at Low Voltage
As V
CC
drops to 0V, the MIC6315 will no longer be able to pull
the /RESET output low. At this point, the pull-up resistor will
pull the output high. The value of the pull-up resistor and the
voltage it is connected to will affect the point at which this
happens.
Micrel
Wire OR'ing The /RESET Output
Because the RESET output is open-drain, several reset
sources can be wire-ORed in parallel to allow resets from
multiple sources.
V
CC
Transients
The MIC6315 is relatively immune to negative-going V
CC
glitches below the reset threshold. Typically, a negative-
going transient 125mV below the reset threshold with a
duration of 25
μ
s or less will not cause an unwanted reset. If
additional transient immunity is needed, a bypass capacitor
can be placed a close as possible to the MIC6315.
VCC
RESET
5V SYSTEM
RESET
VCC
MIC6315
+5.0V
MR
10k
+3.3V
MIC6315 Used in a Multiple Supply System
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC6315_05 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Open-Drain レP Reset Circuit |
| MIC6315_08 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Open-Drain μP Reset Circuit |
| MIC6315-25D4U TR | 功能描述:IC RESET GEN 2.50V VTH SOT143-4 RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開路漏極或開路集電極 復(fù)位:低有效 復(fù)位超時:標(biāo)準(zhǔn)傳輸延遲為 60 µs 電壓 - 閥值:3V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:Digi-Reel® 其它名稱:LM8364BALMF30DKR |
| MIC6315-25D4UY TR | 功能描述:監(jiān)控電路 Reset Generator, Active Low, 2.63V VTH, Manual Reset, SOT-143 (Lead Free) 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 |
| MIC6315-26D2U | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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