Datasheet

8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
Revision 1.32 (01-05-12) 16 SMSC CAP1188
DATASHEET
Note 2.5 The ALERT pin will not glitch high or low at power up if connected to VDD or another
voltage.
Note 2.6 The SMCLK and SMDATA pins will not glitch low at power up if connected to VDD or
another voltage.
BC-Link Timing
Clock Period t
CLK
250 ns
Data Hold Time t
HD:DAT
0 ns
Data Setup Time t
SU:DAT
30 ns Data must be valid before clock
Clock Duty Cycle Duty 40 50 60 %
SPI Timing
Clock Period t
P
250 ns
Clock Low Period t
LOW
0.4 x t
P
0.6 x t
P
ns
Clock High Period t
HIGH
0.4 x t
P
0.6 x t
P
ns
Clock Rise / Fall
time
t
RISE
/
t
FALL
0.1 x t
P
ns
Data Output Delay t
D:CLK
10 ns
Data Setup Time t
SU:DAT
20 ns
Data Hold Time t
HD:DAT
20 ns
SPI_CS# to
SPI_CLK setup time
t
SU:CS
0 ns
Wake Time t
WAKE
10 20 us SPI_CS# asserted to CLK assert
Table 2.2 Electrical Specifications (continued)
V
DD
= 3V to 3.6V, T
A
= 0°C to 85°C, all Typical values at T
A
= 27°C unless otherwise noted.
CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS