MAX16154DECT datasheet(15/20 Pages) MAXIM

tên linh kiện	MAX16154DECT

Giải thích chi tiết về linh kiện	nanoPower Supervisor and Watchdog Timer

PDF	20 Pages

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nhà sản xuất	MAXIM [Maxim Integrated Products]

Trang chủ	https://www.maximintegrated.com/en.html

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15 / 20 page

VCC

WD_EN

RST

VCC (MIN)

VTH

tRP

tSTART-UP

A B

C WATCHDOG DOES NOT START AFTER START-UP PERIOD SINCE WD_EN IS HELD LOW.

D TRANSITION ON WDI IGNORED WHEN WD_EN IS HELD LOW.

E WATCHDOG TIMER STARTS AFTER RISING EDGE ON WD_EN.

F WATCHDOG TIMES OUT, WDO ASSERTS AND THE NEXT WATCHDOG TIMER STARTS AT THE FALLING EDGE OF WDO.

G TRANSITION ON WDI IGNORED AFTER WDO ASSERTS.

tWD

D E

tWD

WDO

WDI

TRANSITIONS ON WDI INGORED DURING tRP and tSTARTUP DELAY.

H WATCHDOG TIMES OUT, WDO ASSERTS.

tWDO

Figure 3. Watchdog Timing Characteristics with WD_EN Active After Startup Time

Watchdog Input Signal

Watchdog timing is measured from the last WDI falling edge associated with a pulse of at least 1µs (min) in width.

WDI transitions are ignored when WDO and/or RST are asserted, and during the startup delay period. Watchdog input

transitions are also ignored for a setup period (tSETUP) of up to 300μs after WD_EN is asserted.

MAX16152/MAX16153/

MAX16154/MAX16155

nanoPower Supervisor and Watchdog Timer

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