DA9062 datasheet(49/101 Pages) RENESAS

49 / 101 page

DA9062

PMIC for Applications Requiring up to 8.5 A

Datasheet

Revision 3.8

15-Feb-2022

CFR0011-120-00

49 of 99

Current State

LS GPI

SYS_EN

PWR_EN

Freeze

Note 1

Next State

SYSTEM

POWERDOWN

SYSTEM

ACTIVE

SYSTEM

ACTIVE

POWERDOWN

ACTIVE

SYSTEM

ACTIVE

SYSTEM

ACTIVE

Note 1

In this table, Freeze represents the result of the comparison retry count = 0.

The following events will reset the retry counter and release the state machine from the freeze state:

● De-assertion of all blocked level-sensitive wakeup conditions

● Entry to the RESET mode (over-temperature error, nRESETREQ or long press of nONKEY)

● Entry to the RTC mode (system supply error)

The freeze operation is illustrated in Figure 22. Once the freeze state is cleared, DA9062 continues

operating normally. The freeze function can be enabled in the FREEZE_EN register and the number

of retries triggering the freeze can be configured in NFREEZE.

Power mode

ACTIVE

POWERDOWN

ACTIVE

TWD_ERROR

GPI

NFREEZE

The watchdog

expires

The level sensitive

wake-up condition

is blocked

The level sensitive

wake-up condition

is de-asserted

which resets the

retry count

The retry count is

decremented and

reaches zero

The system

operates normally

upon the next

wake-up event

Retry count

Figure 22: Freeze Function

8.8.5

Power-Up, Power-Down, and Shutdown Sequences

The power-up, power-down, and shutdown sequences, see Figure 21, are handled by the power

supply sequencer, see Section 8.9. All power-up sequences are identical, and the power-down

sequences mirror the power-up sequences.

The shutdown sequences are also identical to the power-down sequence, but after reaching

POWERDOWN mode, the state machine automatically proceeds to RESET mode. The shutdown

sequences caused by an internal error or nRESETREQ can be sped up from the INT_SD_MODE

and HOST_SD_MODE controls: see Section 8.8.3.

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