Rainbow Electronics MAX6869 - Manual (Page 10)

MAX6854–MAX6869
Nanopower µP Supervisory Circuits with
Optional Manual Reset, Watchdog Timer
10 ______________________________________________________________________________________
MAX6854–
MAX6869
V
CC
V
CC
WDI
(MAX6864–MAX6869)
RESET
(MAX6854/MAX6856–MAX6861/
MAX6863/MAX6864/MAX6866/
MAX6867/MAX6869)
MR
(MAX6854/MAX6855/MAX6856,
MAX6861–MAX6869)
RESET
TIMEOUT
GENERATOR
RESET
(MAX6855/MAX6862/MAX6865/
MAX6868)
CT
(MAX6861/MAX6862/MAX6863)
1.25V
10kΩ
WATCHDOG
TIMER
GND
WATCHDOG
TRANSITION
DETECTOR
Figure 1. Functional Diagram
V CC
RESET*
*RESET IS THE INVERSE OF RESET.
MR
V
TH
t RP
t MRD
t RP
t RD
t MPW
Figure 2. RESET Timing Relationship