sx8639 Semtech Corporation, sx8639 Datasheet - Page 9
sx8639
Manufacturer Part Number
sx8639
Description
Low Power, Capacitive Button And Wheel Touch Controller 8 Sensors With Enhanced Led Drivers And Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8639.pdf
(81 pages)
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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_8, September 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
(8 sensors) with Enhanced LED Drivers and Proximity Sensing
© 2010 Semtech Corp.
Figure 5
Low Power, Capacitive Button and Wheel Touch Controller
I2C Start and Stop timing
I2C Timing Specification
I2C Data timing
Conditions
9
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
SX8639
Unit
KHz
us
us
ns
ns
us
us
us
us
ns
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