MGC3130 datasheet(19/40 Pages) MICROCHIP

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 2012 Microchip Technology Inc.

Advance Information

DS41667A-page 19

MGC3130

Power-up Phases

• Reset or Deep Sleep: The system is kept in Reset

or is in Deep Sleep mode

• Power-up: Phase when the system starts up after

Reset/Deep Sleep has been released

• Processing operation: Processing mode is started

• Power-up Time-out

Signal References

• LSO: Low-Speed Oscillator clock

• HSO: High-Speed Oscillator clock

•VREF Enable: Voltage Reference enable signal

• HSO Enable: High-Speed Oscillator enable signal

• STEP-UP Enable: STEP-UP converter enable

signal

Figure 4-9 illustrates the power-down sequence

timings.

FIGURE 4-9:

POWER-DOWN SEQUENCE TIMINGS

TABLE 4-3:

POWER-UP TIME-OUT (tPWRT)

Signal

Symbol

Delay in LSO Cycles

After Reset

After Deep Sleep

(STEP-UP On)

After Deep Sleep

(STEP-UP Off)

VREF Enable

tVREF

HSO Enable

tHSO

STEP-UP

tSTEP-UP

SPU CLK

tSPUCLK

Power-Up

Time-Out

tPWRT

LSO

SPU CLK

STEP-UP enable

SPU halted

SPU running

HSO enable

VREF enable

Processing

operation

Power

down

Request

Deep Sleep

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