MPR084EJ Freescale Semiconductor, MPR084EJ Datasheet - Page 26

• Manufacturer Part Number: MPR084EJ
• Description: IC CTLR TOUCH SENSR PROX 16TSSOP
• Manufacturer: Freescale Semiconductor
• Type: Capacitiver

Specifications of MPR084EJ

• Number Of Inputs/keys: 8 Key
• Data Interface: I²C, Serial
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Supply: 1.62mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Output Type: Voltage
• Interface: I²C
• Input Type: Logic
• Supply Voltage: 3.3 V
• Dimensions: 5 mm L x 4.4 mm W x 1.05 mm H
• For Use With: KITMPR084EVM - KIT EVAL 8-PAD TOUCH MPR084
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10
10.1
The Key Click Sound Generator allows the MPR084 to generate audible feedback, independent of the I
The sounder is used to drive a piezo buzzer. This output is configured by using the Sounder Register, shown in the following
section.
10.1.1 Sounder Configuration Register
The I
10.2
The Sensor Information register is a read only register that displays a descriptor which contains static information about the
MPR084 version.
10.2.1 Sensor Information Register
The I
MPR084
26
2
2
C slave address of the Sounder Configuration Register is 0x07 - 0x10
C slave address of the Sensor Information Register is 0x14.
Table 18. Sounder Configuration Register Field Descriptions
Table 19. Sensor Information Register Field Descriptions
Additional Features
Key Click Sound Generator
Sensor Information
SensorInfo
Reset:
Reset:
Field
FREQ
Field
SEN
7-0
CP
W
W
2
1
0
R
R
7
0
0
7
0
SensorInfo – The Sensor Information register describes the version information for
the part. Burst reads will display ASCII data in the following format:
VENDOR_LABEL",PN:"PRODUCT_LABEL",QUAL:"BUILD_TYPE_LABEL",VER:"
BUILD_VERSION_MAJOR"_"BUILD_VERSION_MINOR"_"BUILD_NUMBER"\0"
= Unimplemented
= Unimplemented
Click Period – The Click Period bit controls the length of the sounder click.
0 Sounder Click Period is 10ms
1 Sounder Click Period is 20ms
Frequency – The Frequency bit controls the frequency of the driven output.
0 Sounder frequency is 1kHz
1 Sounder frequency is 2kHz
Sounder Enable – The Sounder Enable bit enables or disables the sounder output.
0 Disable
1 Enable
6
0
0
6
1
Figure 29. Sounder Configuration Register
Figure 30. Sensor Information Register
5
0
0
5
0
4
0
0
4
0
SensorInfo
Description
Description
3
0
0
3
0
CP
2
0
2
1
FREQ
1
0
1
1
Freescale Semiconductor
2
C communication status.
SEN
0
1
0
0
Sensors