MPR121 FREESCALE [Freescale Semiconductor, Inc], MPR121 Datasheet - Page 9

• Manufacturer Part Number: MPR121
• Description: Proximity Capacitive Touch Sensor Controller
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Table 6. I
(Typical Operating Circuit,
Sensors
Freescale Semiconductor
I
Serial Clock Frequency
Bus Free Time Between a STOP and a START Condition
Hold Time, (Repeated) START Condition
Repeated START Condition Setup Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of Both SDA and SCL Signals, Receiving
Fall Time of Both SDA and SCL Signals, Receiving
Fall Time of SDA Transmitting
Pulse Width of Spike Suppressed
Capacitive Load for Each Bus Line
2
C AC CHARACTERISTICS
2
C AC Characteristics
Parameter
V
DD
and V
REG
= 1.8 V, T
A
= 25°C, unless otherwise noted.)
Symbol
t
t
t
t
t
HD, STA
SU, STO
HD, DAT
SU, DAT
SU, STA
t
t
t
f
t
HIGH
LOW
F.TX
t
SCL
BUF
C
t
t
SP
R
F
b
Conditions
Min
100
1.3
0.6
0.6
0.6
1.3
0.7
20+0.1C
20+0.1C
20+0.1C
Typ
25
b
b
b
Max
400
300
300
250
400
0.9
MPR121
Units
kHz
pF
μs
μs
μs
μs
μs
ns
μs
μs
ns
ns
ns
ns
9