Datasheet

29
bq2040
Symbol Parameter Min Max Units Notes
F
SMB
SMBus operating frequency 10 100 KHz
T
BUF
Bus free time between stop and
start condition
4.7
µ
s
T
HD:STA
Hold time after (repeated) start
condition
4.0
µ
s
T
SU:STA
Repeated start condition setup time 4.7
µs
T
SU:STO
Stop condition setup time 4.0
µ
s
T
HD:DAT
Data hold time 300 ns
T
SU:DAT
Data setup time 250 ns
T
LOW
Clock low period 4.7
µ
s
T
HIGH
Clock high period 4.0
µ
s
T
F
Clock/data fall time 300 ns
T
R
Clock/data rise time 1000 ns
T
LOW:SEXT
Cumulative clock low extend time
(slave)
25 ms
T
TIMEOUT
25 35 ms
AC Specifications
TD294501.eps
t
SU:STA
SMBC
SMBD
t
SU:STO
t
BUF
t
HD:STA
t
LOW
t
SU:DAT
t
R
t
F
t
HIGH
t
HD:DAT
Bus Timing Data