MAX16065 Datasheet, PDF(28/61 Page) Maxim Integrated Products – 12-Channel/8-Channel, Flash-Configurable System Managers with Nonvolatile Fault Registers

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12-Channel/8-Channel, Flash-Configurable System

Managers with Nonvolatile Fault Registers

Table 16. Deglitch Configuration

ADDRESS

FLASH

ADDRESS

BIT RANGE

DESCRIPTION

Overcurrent Comparator Deglitch Time:

00 = No deglitch

73h

273h

[6:5]

01 = 4ms

10 = 15ms

11 = 60ms

Voltage Comparator Deglitch Configuration:

00 = 2 cycles

74h

274h

[6:5]

01 = 4 cycles

10 = 8 cycles

11 = 16 cycles

Critical Faults

During normal operation, a fault condition can be con-

figured to shut down all the EN_OUT_s and store fault

information in the flash memory by setting the appropri-

ate critical fault enable bits. During power-up and pow-

er-down, all sequenced MON_ inputs are considered

critical. Faults during power-up and power-down always

cause the EN_OUT_s to turn off and can store fault infor-

mation in the flash memory, depending on the contents

of r6Dh[1:0]. Set the appropriate critical fault enable bits

in registers r6Eh to r72h (see Table 18) for a fault condi-

tion to trigger a critical fault.

Logged fault information is stored in flash registers r200h

to r20Fh (see Table 19). After fault information is logged,

the flash is locked and must be unlocked to enable a

new fault log to be stored. Write a â0â to r8Ch[1] to unlock

the FAULT flash. Fault information can be configured to

store ADC conversion results and/or fault flags in regis-

ters. Select the critical fault configuration in r6Dh[1:0].

Set r6Dh[1:0] to â11â to turn off the fault logger. All stored

ADC results are 8 bits wide.

Power-Up/Power-Down Faults

All EN_OUT_s deassert when an overvoltage or under-

voltage fault is detected during power-up/power-down

and the MAX16065/MAX16066 return to the power-

off condition. Fault information can be stored to flash

depending on r6D[1:0], see Table 18. GPIO3 and

GPIO8 can be configured as power-up fault outputs

(ANY_FAULT).

Autoretry/Latch Mode

The MAX16065/MAX16066 can be configured for one

of two fault management methods: autoretry or latch-

on fault. Set r74h[4:3] to â00â to select the latch-on-fault

mode. In this configuration, EN_OUT_s deassert after

a critical fault event. The device does not reinitiate the

power-up sequence until EN is toggled or the Software

Enable bit is toggled. See the Enable section for more

information on setting the software enable bit.

Table 17. Fault Flags

ADDRESS

1Bh

BIT RANGE

[0]

[1]

[2]

[3]

[4]

[5]

[6]

[7]

MON1

MON2

MON3

MON4

MON5

MON6

MON7

MON8

DESCRIPTION

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