MAX8834Y/MAX8834Z
Adaptive Step-Up Converters
with 1.5A Flash Driver
Table 9. TMR_DUR
This register contains watchdog timer and flash safety time-control values.
REGISTER NAME
Address
Reset Value
Type
Special Features
TMR_DUR
0x0A
0x00
Read/write
BIT
NAME
DESCRIPTION
DEFAULT VALUE
Enable/Disable Of Watchdog Timer Function
B7 (MSB)
WDT_EN
0 = WDT is disabled
0
1 = WDT is enabled
B6
Watchdog Timer Duration
00 = 4s
B5
WDT_DUR[1:0]
01 = 8s
10 = 12s
00
11 = 16s
Safety Timer Control
0 = One-shot mode—generates a flash with a duration of TMR_DUR
regardless of LED:EN and I 2 C setting; pulling V DD low in this
B4
TMR_MODE
condition terminates flash operating and puts the IC into power-down
0
mode
1 = Maximum timer mode—ensures that flash duration does not exceed
the timer defined in TMR:DUR
Safety Timer Duration Control
B3
B2
0000 = 50ms
0001 = 100ms
0010 = 150ms
0011 = 200ms
0100 = 250ms
0101 = 300ms
0110 = 350ms
32
B1
B0 (LSB)
TMR_DUR [3:0]
0111 = 400ms
1000 = 450ms
1001 = 500ms
1010 = 550ms
1011 = 600ms
1100 = 650ms
1101 = 700ms
1110 = 750ms
1111 = 800ms
0000
Maxim Integrated
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