Freescale Semiconductor Proximity Sensor Kit KITMPR121EVM KITMPR121EVM KITMPR121EVM Datenbogen
Produktcode
KITMPR121EVM
MPR121
Sensors
2
Freescale Semiconductor, Inc.
1
Pin Descriptions
Table 1. Pin Descriptions
Pin No.
Pin Name
Description
1
IRQ
Open Collector Interrupt Output Pin, active low
2
SCL
I
2
C Clock
3
SDA
I
2
C Data
4
ADDR
I
2
C Address Select Input Pin. Connect the ADDR pin to the VSS, VDD, SDA or SCL line
, the resulting I
2
C addresses
are 0x5A, 0x5B, 0x5C and 0x5D respectively
5
VREG
Internal Regulator Node – Connect a 0.1
μF bypass cap to VSS
6
VSS
Ground
7
REXT
External Resistor – Connect a 75 k
Ω 1% resistor to VSS to set internal reference current
8
ELE0
Electrode 0
9
ELE1
Electrode 1
10
ELE2
Electrode 2
11
ELE3
Electrode 3
12
ELE4
Electrode 4
13
ELE5
Electrode 5
14
ELE6
Electrode 6
15
ELE7
Electrode 7
16
ELE8
Electrode 8
17
ELE9
Electrode 9
18
ELE10
Electrode 10
19
ELE11
Electrode 11
20
VDD
Connect a 0.1
μF bypass cap to VSS