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參數資料
| 型號： | MAX6322 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5-Pin レP Supervisory Circuits with Watchdog and Manual Reset |
| 中文描述： | 5引腳、微處理器監(jiān)控電路，帶有看門狗及手動復位 |
| 文件頁數： | 6/16頁 |
| 文件大?。?/td> | 134K |
| 代理商： | MAX6322 |
M
5-Pin μP S upervisory Circ uits with
Watc hdog and Manual Reset
6
_______________________________________________________________________________________
_______________Detailed Desc ription
A microprocessor’s (μP) reset input starts or restarts the
μP in a known state. The reset output of the MAX6316–
MAX6322 μP supervisory circuits interfaces with the
reset input of the μP, preventing code-execution errors
during power-up, power-down, and brownout condi-
tions (see the Typical Operating Circuit. The MAX6316/
MAX6317/MAX6318/MAX6320/MAX6321 are also capa-
ble of asserting a reset should the μP become stuck in
an infinite loop.
Reset Output
The MAX6316L/MAX6318LH/MAX6319LH feature an
active-low reset output, while the MAX6317H/
MAX6318_H/MAX6319_H/MAX6321HP/MAX6322HP
feature an active-high reset output.
RESET
is guaran-
teed to be a logic low and RESET is guaranteed to be a
logic high for V
CC
down to 1V.
The MAX6316–MAX6322 assert reset when V
CC
is below
the reset threshold (V
RST
), when
MR
is pulled low
(MAX6316_/MAX6317H/MAX6319_H/MAX6320P/
MAX6322HP only), or if the WDI pin is not serviced within
the watchdog timeout period (t
WD
). Reset remains assert-
ed for the specified reset active timeout period (t
RP
) after
V
CC
rises above the reset threshold, after
MR
transitions
low to high, or after the watchdog timer asserts the reset
(MAX6316_/MAX6317H/MAX6318_H/MAX6320P/
MAX6321HP). After the reset active timeout period (t
RP
)
expires, the reset output deasserts, and the watchdog
timer restarts from zero (Figure 2).
MAX6316–MAX6322
V
CC
V
CC
WDI
(ALL EXCEPT
MAX6319/MAX6322)
1.23V
52k
52k
GND
RESET
(ALL EXCEPT
MAX6316/MAX6320P)
RESET
(ALL EXCEPT MAX6317)
MR
(ALL EXCEPT
MAX6318/MAX6321)
RESET
GENERATOR
WATCHDOG
TIMER
WATCHDOG
TRANSITION
DETECTOR
Figure 1. Functional Diagram
V
CC
1V
1V
t
RD
V
RST
V
RST
t
RD
RESET
GND
RESET
t
RP
t
RP
GND
Figure 2. Reset Timing Diagram
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX6322HPUK25A | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6322HPUK25A+T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)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 |
| MAX6322HPUK25A-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)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 |
| MAX6322HPUK25B | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6322HPUK25B+T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)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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