ZL40294 datasheet(33/46 Pages) MICROCHIP

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2023 Microchip Technology Inc.

DS20006768B-page 33

ZL40294

FIGURE 5-6:

SMBUS TIMING.

Input Leakage Current

ILEAK

—

±10

µA

—

Current Sinking at VOL(MAX)

IPULLUP

—

Pin Capacitive Load

—

Signal Noise Immunity from

10 MHz to 100 MHz

VNOISE

300

—

mVp-p

—

Noise Spike Suppression Time

TSPIKE

—

SMBus Operating Frequency

FSMB

—

400

kHz

—

Bus Free Time Between Stop

and Start Condition

TBUF

4.7

—

µs

—

Hold Time After (Repeated)

Start Condition

THD-STA

4.0

—

µs

After this period,

the first clock is

generated.

Repeated Start Condition

Setup Time

TSU-STA

4.7

—

µs

—

Stop Condition Setup Time

TSU-STO

4.0

—

µs

—

Data Hold Time

THD-DAT

300

—

Data Setup Time

TSU-DAT

250

—

Clock Low Period

TLOW

4.7

—

µs

——

Clock High Period

THIGH

4.0

—

µs

—

Clock/Data Fall Time

—

300

Clock/Data Rise Time

—

1000

TABLE 5-9:

SMBUS ELECTRICAL CHARACTERISTICS (CONTINUED)

Parameter

Symbol

Min.

Typ.

Max.

Units

Notes

Note 1: 3V to 5V ±10%.

2: Rise and fall time is defined as follows: TR = (VIL(MAX) – 0.15) to (VIH(MIN) + 0.15), TF = (VIH(MIN) + 0.15) to

(VIL(MAX) – 0.15).

3: Devices must provide a means to reject noise spikes of a duration up to the maximum specified value.

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