MAX16067 datasheet(26/47 Pages) MAXIM

Part #	MAX16067

Description	6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

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Manufacturer	MAXIM [Maxim Integrated Products]

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26 _____________________________________________________________________________________

6-Channel, Flash-Configurable System Manager

with Nonvolatile Fault Registers

Reset Output

The reset output, RESET, indicates the status of the

sequencer and the monitored inputs. It asserts during pow-

er-up/power-down and deasserts following the reset time-

out period once the power-up sequence is complete. The

power-up sequence is complete when any MON_ inputs

assigned to slot 6 exceed the undervoltage thresholds and

the slot 6 sequence delay expires. When no MON_ inputs

are assigned to slot 6, the power-up sequence is complete

after the slot sequence delay expires.

During normal monitoring, RESET can be configured to

assert when any combination of MON_ inputs violates

configurable combinations of undervoltage or overvoltage

thresholds. Select the combination of MON_ inputs using

r3Ch[5:0] and r3Dh[5:0]. Note that MON_ inputs con-

figured as critical faults always cause RESET to assert

regardless of these configuration bits.

RESET can be configured as push-pull or open drain

using r3Bh[3], and active high or active low using

r3Bh[2]. Select the reset timeout by loading a value from

Table 22 into r3Bh[7:4].

To generate a one-shot pulse on RESET, write a ‘1’ into

r3Bh[0]. The pulse width is the configured reset timeout.

Register bit r3Bh[0] clears automatically (see Table 22).

The current state of RESET can be checked by reading

r20h[0].

Table 22. Reset Output Configuration

REGISTER

ADDRESS

FLASH

ADDRESS

BIT RANGE

DESCRIPTION

3Bh

23Bh

[0]

RESET Soft Trigger

0 = Normal RESET behavior

1 = Force RESET to assert

[1]

Not used

[2]

0 = Active low

1 = Active high

[3]

0 = Open drain

1 = Push-pull

[7:4]

Reset Timeout Period

0000 = 25Fs

0001 = 1.5ms

0010 = 2.5ms

0011 = 4ms

0100 = 6ms

0101 = 10ms

0110 = 15ms

0111 = 25ms

1000 = 40ms

1001 = 60ms

1010 = 100ms

1011 = 150ms

1100 = 250ms

1101 = 400ms

1110 = 600ms

1111 = 1s

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