Freescale Semiconductor Evaluation Board MPR031/2 for 2- or 3-pad touch sensor controllers DEMOMPR031 DEMOMPR031 データシート
製品コード
DEMOMPR031
MPR03X
Sensors
26
Freescale Semiconductor
A.6
I
2
C AC Characteristics
This section includes information about I
2
C AC Characteristics.
Table 22. I
2
C AC Characteristics
(Typical Operating Circuit,
V
DD
= 1.71 V to 2.75 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical current values are at
V
DD
= 1.8 V, T
A
= +25°C.)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Serial Clock Frequency
f
SCL
400
kHz
1
Bus Free Time Between a STOP and a START
Condition
Condition
t
BUF
1.3
µs
2
Hold Time, (Repeated) START Condition
t
HD, STA
0.6
µs
2
Repeated START Condition Setup Time
t
SU, STA
0.6
µs
2
STOP Condition Setup Time
t
SU, STO
0.6
µs
2
Data Hold Time
t
HD, DAT
0.9
µs
2
Data Setup Time
t
SU, DAT
100
ns
2
SCL Clock Low Period
t
LOW
1.3
µs
2
SCL Clock High Period
t
HIGH
0.7
µs
2
Rise Time of Both SDA and SCL Signals,
Receiving
Receiving
t
R
20+0.1
C
b
300
ns
2
Fall Time of Both SDA and SCL Signals,
Receiving
Receiving
t
F
20+0.1
C
b
300
ns
2
Fall Time of SDA Transmitting
t
F.TX
20+0.1
C
b
250
ns
2
Pulse Width of Spike Suppressed
t
SP
25
ns
2
Capacitive Load for Each Bus Line
C
b
400
pF
2