sx8639 Semtech Corporation, sx8639 Datasheet - Page 8

• 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

ADVANCED COMMUNICATIONS & SENSING
2.4 Electrical Specifications
All values are valid within the operating conditions unless otherwise specified.
Revision 7_8, September 10
Parameter
Current consumption
Active mode, average
Doze mode, average
Sleep
GPIO, set as Input, RESETB, SCL, SDA
Input logic high
Input logic low
Input leakage current
Pull up resistor
Pull down resistor
GPIO set as Output, INTB, SDA
Output logic high
Output logic low
Start-up
Power up time
RESETB
Pulse width
Recommended External components
Capacitor between VDIG, GND
Capacitor between VANA, GND
Capacitor between CP, CN
Capacitor between VDD, GND
Symbol
I
I
I
V
V
L
R
R
V
V
t
t
C
C
C
C
OP,active
OP,Doze
OP,sleep
por
res
I
IH
IL
PU
PD
OH
OL
vdig
vana
int
vdd
Table 5
(8 sensors) with Enhanced LED Drivers and Proximity Sensing
type 0402, tolerance +/-50%
type 0402, tolerance +/-50%
type 0402, COG, tolerance +/-5%
type 0402, tolerance +/-50%
© 2010 Semtech Corp.
Low Power, Capacitive Button and Wheel Touch Controller
Conditions
30ms scan period,
8 sensors enabled,
minimum sensitivity
195ms scan period,
8 sensors enabled,
minimum sensitivity
I2C and GPI listening,
sensors disabled
VSS applied to GND pins
CMOS input
when enabled
when enabled
I
I
I
time between rising edge
VDD and rising INTB
OH
OL,GPIO
OL,SDA,INTB
Electrical Specifications
<4mA
<12mA
<4mA
8
Min.
0.7*VDD
VSS - 0.3V
VDD-0.4
50
Typ.
175
80
8
660
660
100
100
1
100
DATASHEET
www.semtech.com
Max.
225
110
17
VDD + 0.3V V
0.8
±1
0.4
150
SX8639
Unit
uA
uA
uA
V
uA
kΩ
kΩ
V
V
ms
ns
nF
nF
nF
nF