sx8645 Semtech Corporation, sx8645 Datasheet - Page 9

• Manufacturer Part Number: sx8645
• Description: Ultra Low Power, Capacitive Button And Wheel Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
Notes:
(i) All timing specifications, Figure 4 and Figure 5, refer to voltage levels (V
The interface complies with slave F/S mode as described by NXP: “I2C-bus specification, Rev. 03 - 19 June 2007”
Revision 7_5, February 10
Parameter
I2C Timing Specifications
SCL clock frequency
SCL low period
SCL high period
Data setup time
Data hold time
Repeated start setup time
Start condition hold time
Stop condition setup time
Bus free time between stop and start
Input glitch suppression
(i)
Figure 4
Symbol
f
t
t
t
t
t
t
t
t
t
Table 6
SCL
LOW
HIGH
SU;DAT
HD;DAT
SU;STA
HD;STA
SU;STO
BUF
SP
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2010 Semtech Corp.
Figure 5
I2C Start and Stop timing
I2C Timing Specification
I2C Data timing
Conditions
9
Ultra Low Power, Capacitive Button and Wheel
Min.
1.3
0.6
100
0
0.6
0.6
0.6
500
IL
, V
IH
, V
OL
Typ.
) defined in Table 5.
DATASHEET
www.semtech.com
Max.
400
50
SX8645
Unit
KHz
us
us
ns
ns
us
us
us
us
ns