BQ40Z50-R2 datasheet(19/55 Pages) TI2

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7.33 Timing Requirements: SMBus (continued)

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

MIN

NOM

MAX

UNIT

tHD(START)

Hold time after (repeated)

start

4.0

µs

tSU(START)

Repeated start setup time

4.7

µs

tSU(STOP)

Stop setup time

4.0

µs

tHD(DATA)

Data hold time

300

tSU(DATA)

Data setup time

250

tTIMEOUT

Error signal detect time

tLOW

Clock low period

4.7

µs

tHIGH

Clock high period

4.0

µs

Clock rise time

10% to 90%

1000

Clock fall time

90% to 10%

300

tLOW(SEXT)

Cumulative clock low slave

extend time

tLOW(MEXT)

Cumulative clock low

master extend time

7.34 Timing Requirements: SMBus XL

Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = –40°C to 85°C and VCC =

2.2 V to 26 V (unless otherwise noted)

MIN

NOM

MAX UNIT

fSMBXL

SMBus XL operating

frequency

SLAVE mode

400

kHz

tBUF

Bus free time between start

and stop

4.7

µs

tHD(START)

Hold time after (repeated) start

4.0

µs

tSU(START)

Repeated start setup time

4.7

µs

tSU(STOP)

Stop setup time

4.0

µs

tTIMEOUT

Error signal detect time

tLOW

Clock low period

µs

tHIGH

Clock high period

µs

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BQ40Z50-R2

SLUSCS4C – JUNE 2017 – REVISED APRIL 2021

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