WATCHDOG
TRANSITION
DETECTOR
WATCHDOG
TIMER
WDI
MR
WDO
V
CC
TIMEBASE FOR
RESET AND
WATCHDOG
250µA
RESET
GENERATOR
RESET/RESET*
V
CC
4.65V
(4.40V for the SP706 and SP813M)
PFI
PFO
SP705
SP706
SP813L
1.25V
GND
* For the SP813L only
Figure 2. Internal Block Diagram for the SP705/706/813L
V
CC
RESET
RESET
250µA
MR
RESET
GENERATOR
V
CC
4.65V
(4.40V for the SP708)
PFI
PFO
1.25V
SP707
SP708
GND
Figure 3. Internal Block Diagram for the SP707/708
June 2008 Rev C
SP705 Low Power Microprocessor Supervisory Circuits
© 2008 Exar Corporation
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