MMPF0100NPEP datasheet(31/137 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

PF0100

Functional Block Requirements and Behaviors

Power Generation

6.4.2

State Machine Flow Summary

Table 24 provides a summary matrix of the PF0100 flow diagram to show the conditions needed to transition from one state to

another.

6.4.2.1

Turn On Events

From OFF and Sleep modes, the PMIC is powered on by a turn-on event. The type of Turn-on event depends on the configuration

of PWRON. PWRON may be configured as an active high when PWRON_CFG = 0, or as the input of a mechanical switch when

PWRON_CFG = 1. VIN must be greater than UVDET for the PMIC to turn-on. When PWRON is configured as an active high and

PWRON is high (pulled up to VSNVS) before VIN is valid, a VIN transition from 0.0 V to a voltage greater than UVDET is also a

Turn-on event. See the State diagram, Figure 8, and the Table 24 for more details. Any regulator enabled in the Sleep mode will

remain enabled when transitioning from Sleep to ON, i.e., the regulator will not be turned off and then on again to match the start-

up sequence. The following is a more detailed description of the PWRON configurations:

• If PWRON_CFG = 0, the PWRON signal is high and VIN > UVDET, the PMIC will turn on; the interrupt and sense bits,

PWRONI and PWRONS respectively, will be set.

• If PWRON_CFG = 1, VIN > UVDET and PWRON transitions from high to low, the PMIC will turn on; the interrupt and sense

bits, PWRONI and PWRONS respectively, will be set.

Table 24. State Machine Flow Summary

STATE

Next State

OFF

Coin cell

Sleep

Standby

OFF

XVIN < UVDET

PWRON_CFG = 0

PWRON = 1 & VIN > UVDET

PWRON_CFG = 1

PWRON = 0 < 4.0 s

& VIN > UNDET

Coin cell

VIN > UVDET

Sleep

Thermal Shutdown

VIN < UVDET

PWRON_CFG = 0

PWRON = 1 & VIN > UVDET

PWRON_CFG = 1

PWRON = 0 < 4.0 s &

VIN > UNDET

PWRON_CFG = 1

PWRON = 0 ≥ 4.0 s

Any SWxOMODE = 1 &

PWRONRSTEN = 1

Standby

Thermal Shutdown

VIN < UVDET

PWRON_CFG = 0

PWRON = 0

Any SWxOMODE = 1

PWRON_CFG = 1

PWRON = 0 ≥ 4.0 s

Any SWxOMODE = 1 &

PWRONRSTEN = 1

Standby de-asserted

PWRON_CFG = 0

PWRON = 0

All SWxOMODE = 0

PWRON_CFG = 1

PWRON = 0 ≥ 4.0 s

All SWxOMODE = 0 &

PWRONRSTEN = 1

Thermal Shutdown

VIN < UVDET

PWRON_CFG = 0

PWRON = 0

Any SWxOMODE = 1

PWRON_CFG = 1

PWRON = 0 ≥ 4.0 s

Any SWxOMODE = 1 &

PWRONRSTEN = 1

Standby

asserted

PWRON_CFG = 0

PWRON = 0

All SWxOMODE = 0

PWRON_CFG = 1

PWRON = 0 ≥ 4.0 s

All SWxOMODE = 0 &

PWRONRSTEN = 1

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