Datasheet
SLES105B − FEBRUARY 2004 − REVISED NOVEMBER 2006
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25
TIMING DIAGRAM
S
DA
S
CL
t
(BUF)
t
(D-SU)
t
(D-HD)
Start
t
(LOW)
t
(S-HD)
t
(SCL-F)
t
(SCL-R)
t
(HI)
Repeated Start
t
(RS-SU)
t
(RS-HD)
t
(SDA-F)
t
(SDA-R)
t
(P-SU)
Stop
t
(SP)
TIMING CHARACTERISTICS
PARAMETER CONDITIONS MIN MAX UNIT
f
(SCL)
SCL clock frequency
Standard 100
kHz
f
(SCL)
SCL clock frequency
Fast 400
kHz
t
(BUF)
Bus free time between stop and start conditions
Standard 4.7
µs
t
(BUF)
Bus free time between stop and start conditions
Fast 1.3
µ
s
t
(LOW)
Low period of the SCL clock
Standard 4.7
µs
t
(LOW)
Low period of the SCL clock
Fast 1.3
µ
s
t
(HI)
High period of the SCL clock
Standard 4 µs
t
(HI)
High period of the SCL clock
Fast 600 ns
t
(RS-SU)
Setup time for (repeated) start condition
Standard 4.7 µs
t
(RS-SU
)
Setup time for (repeated) start condition
Fast 600 ns
t
(S-HD)
Hold time for (repeated) start condition
Standard 4 µs
t
(RS-HD)
Hold time for (repeated) start condition
Fast 600 ns
t
(D-SU)
Data setup time
Standard 250
ns
t
(D-SU)
Data setup time
Fast 100
ns
t
(D-HD)
Data hold time
Standard 0 900
ns
t
(D-HD)
Data hold time
Fast 0 900
ns
t
(SCL-R)
Rise time of SCL signal
Standard 20 + 0.1 C
B
1000
ns
t
(SCL-R)
Rise time of SCL signal
Fast 20 + 0.1 C
B
300
ns
t
(SCL-R1)
Rise time of SCL signal after a repeated start condition and after an
Standard 20 + 0.1 C
B
1000
ns
t
(SCL-R1
)
Rise time of SCL signal after a repeated start condition and after an
acknowledge bit
Fast 20 + 0.1 C
B
300
ns
t
(SCL-F)
Fall time of SCL signal
Standard 20 + 0.1 C
B
1000
ns
t
(SCL-F)
Fall time of SCL signal
Fast 20 + 0.1 C
B
300
ns
t
(SDA-R)
Rise time of SDA signal
Standard 20 + 0.1 C
B
1000
ns
t
(SDA-R
)
Rise time of SDA signal
Fast 20 + 0.1 C
B
300
ns
t
(SDA-F)
Fall time of SDA signal
Standard 20 + 0.1 C
B
1000
ns
t
(SDA-F)
Fall time of SDA signal
Fast 20 + 0.1 C
B
300
ns
t
(P-SU)
Setup time for stop condition
Standard 4 µs
t
(P-SU)
Setup time for stop condition
Fast 600 ns
C
(B)
Capacitive load for SDA and SCL lines 400 pF
t
(SP)
Pulse duration of suppressed spike Fast 50 ns
V
NH
Noise margin at high level for each connected device (including hysteresis)
Standard
V
NH
Noise margin at high level for each connected device (including hysteresis)
Fast 0.2 V
DD
V