Datasheet

MAX16997A
ENABLE
RESET
5V
BACKUP CIRCUITRY,
PERIPHERAL
BACKUP
CIRCUITRY FLAGS
SEPARATE
WATCHDOG
EN
SWT
GND
IN
V
BATT
V
CC
R1
R2
WATCHDOG
LDO
5V
REGULATOR
I/O
GND
µC
I/O
WDI
Figure 12. MAX16997A Application Diagram
MAX16997/MAX16998
High-Voltage Watchdog Timers with
Adjustable Timeout Delay
14 ______________________________________________________________________________________
MAX16998A/B/D
ENABLE
EN
RESET
SRT
BACKUP CIRCUITRY,
PERIPHERAL
5V
REGULATOR
RESETIN
SWT
GND
IN
V
BATT
V
CC
V
CC
R1
R2
RESET
I/O
GND
µC
WDI
Figure 11. MAX16998A/B/D Switch Over to Backup Circuitry