USB5916CTSLASHKD datasheet(52/66 Pages) MICROCHIP

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USB5916C

DS00003189C-page 50

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2022 Microchip Technology Inc. and its subsidiaries

Note 4: XTALI can optionally be driven from a 25 MHz singled-ended clock oscillator.

Note 5: Refer to the USB 3.2 Gen 1 Specification for USB DC electrical characteristics.

10.6 AC Specifications

This section details the various AC timing specifications of the device.

10.6.1

POWER SUPPLY AND RESET_N SEQUENCE TIMING

Figure 10-2 illustrates the recommended power supply sequencing and timing for the device.

VDD33 should rise after

or at the same rate as

VDD12. Similarly, RESET_N and/or VBUS_DET should rise after or at the same rate as VDD33.

VBUS_DET and RESET_N do not have any other timing dependencies.

O12 Type Output Buffer

Low Output Level

High Output Level

VOL

VOH

VDD33-0.4

0.4

IOL = 12 mA

IOH = -12 mA

OD12 Type Output Buffer

Low Output Level

VOL

0.4

IOL = 12 mA

ICLK Type Input Buffer

(XTALI Input)

Low Input Level

High Input Level

VIL

VIH

0.85

0.50

VDD33

Note 4

IO-U Type Buffer

(See Note 5)

Note 5

FIGURE 10-2:

POWER SUPPLY AND RESET_N SEQUENCE TIMING

TABLE 10-5: POWER SUPPLY AND RESET_N SEQUENCE TIMING

Symbol

Description

Min

Typ

Max

Units

tVDD33

VDD12 to VDD33 rise time

treset

VDD33 to RESET_N/VBUS_DET rise time

TABLE 10-4: I/O DC ELECTRICAL CHARACTERISTICS (CONTINUED)

Parameter

Symbol

Min

Typical

Max

Units

Notes

VDD12

tVDD33

VDD33

RESET_N/

VBUS_DET

treset

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