MAX16047A Datasheet, PDF (42/61 Pages) Maxim Integrated Products – 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers

12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
Table 22. Watchdog Mode Selection
REGISTER/
EEPROM
ADDRESS
BIT RANGE
DESCRIPTION
Software Enable Bit
0
0 = Enabled. EN must also be high to begin sequencing.
1 = Disabled (factory default)
Margin Bit
1
1 = Margin functionality is enabled
0 = Margin disabled
4Dh
Early Warning Selection Bit
2
0 = Early warning thresholds are undervoltage thresholds
1 = Early warning thresholds are overvoltage thresholds
3
[7:4]
Watchdog Mode Selection Bit
0 = Watchdog timer is in dependent mode
1 = Watchdog timer is in independent mode
Not used
Table 23. Watchdog Enables and Configuration
REGISTER/EEPROM
ADDRESS
55h
BIT RANGE
[2:0]
[4:3]
[5]
Watchdog Timeout
000 = 1.5ms
001 = 6ms
010 = 18.75ms
011 = 75ms
100 = 300ms
101 = 1200ms
110 = 2400ms
111 = 4800ms
Watchdog Startup Delay
00 = 38.4s
01 = 16.8s
10 = 153.6s
11 = 192s
Watchdog Enable
1 = Watchdog enabled
0 = Watchdog disabled
DESCRIPTION
Watchdog Startup Delay Enable
[6]
1 = Watchdog startup delay enabled
0 = Watchdog startup delay disabled
Watchdog RESET Output Enable
[7]
1 = Watchdog timeout asserts RESET output
0 = Watchdog timeout does not assert RESET output
42 ______________________________________________________________________________________