參數(shù)資料
型號: MAX6858UK29D2+T
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 電源管理
英文描述: Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝: LEAD FREE, MO-178AA, SOT-23, 5 PIN
文件頁數(shù): 17/17頁
文件大?。?/td> 489K
代理商: MAX6858UK29D2+T
MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869
Nanopower P Supervisory Circuits with
Manual Reset and Watchdog Timer
_______________________________________________________________________________________
9
MAX6867/MAX6868/MAX6869 Pin Description
PIN
MAX6867/
MAX6869
MAX6868
NAME
FUNCTION
11
WDI
Watchdog Input. If WDI remains high or low for longer than the watchdog timeout
period, the internal watchdog timer expires, and a reset is triggered for the reset
timeout period. The internal watchdog timer clears whenever reset is asserted,
the manual reset is asserted, or WDI sees a rising or falling edge.
22
GND
Ground
33
MR
Active-Low Manual Reset Input. Drive MR low to initiate a reset. The reset output
remains asserted while MR is held low and for the reset timeout period after MR
transitions high. Leave MR unconnected or connect to VCC if unused. MR is
internally pulled up to VCC through 10k
.
4—
RESET
Active-Low Open-Drain or Push-Pull Reset Output. RESET transitions from high to
low when VCC drops below the selected reset threshold, MR is pulled low, or the
watchdog timer expires. RESET remains low for the reset timeout period after
VCC exceeds the device reset threshold, MR deasserts, or after the watchdog
timer expires. Push-pull RESET outputs are referenced to VCC. Open-drain
RESET outputs require an external pullup resistor.
55
VCC
Supply Voltage. Input for VCC reset monitor. For noisy systems, bypass VCC with
a 0.1F capacitor to GND.
—4
RESET
Active-High Push-Pull Reset Output. RESET transitions from low to high when
VCC drops below the selected reset threshold, MR is pulled low, or the watchdog
timer expires. RESET remains high for the reset timeout period after VCC
exceeds the device reset threshold, MR deasserts, or after the watchdog timer
expires. RESET is referenced to VCC.
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