26HS01GTAM03 datasheet(88/166 Pages) INFINEON

88 / 166 page

Datasheet

88 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Features

4.17.2

Power down

During power down or voltage drops below VCC(cut-off), the voltage must drop below VCC(Low) for a period of tPD

for the part to initialize correctly on power up (see Figure 48). If during a voltage drop the VCC stays above

VCC(cut-off) the part will stay initialized and will work correctly when VCC is again above VCC(min). In the event

POR did not complete correctly after power up, the assertion of the RESET# signal will restart the POR process.

Figure 48

Power down and voltage drop

4.17.3

Power up and power down sequence

The following power sequence needs to be followed for the guaranteed reliable operation of HL-T/HS-T devices.

•Apply VCC before VCCQ during power up sequence. VCC and VCCQ can be applied simultaneously during power

up, as long as VCCQ does not exceed VCC.

• During the power down mode, reduce the VCCQ before VCC. VCC and VCCQcan be reduced simultaneously during

power down, as long as VCCQ does not exceed VCC.

• It is recommended to keep VCCQ  VCC.

Figure 49

Power up and power down sequence

VCC

VCCQ

Power Up

Power

Down

Normal Operation

tVR

tVF

VCC

VCCQ

Power Up

Power

Down

Normal Operation

tVR

tVF

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