MPR084EJ Freescale Semiconductor, MPR084EJ Datasheet - Page 21

• 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

Sensors
Freescale Semiconductor
6.4.1 Fault Register
The Fault Register is a read only register that shows the fault number under the current sensor conditions. Any write to the Fault
Register will clear the register, when in Stop mode. The Fault register cannot be cleared when the part is in a Run mode. The I
slave address of the Fault Register is 0x01.
Table 15. Fault Register Field Descriptions
Reset:
FAULT
MNKE
Field
1:0
W
4
R
7
0
0
= Unimplemented
Maximum Number of Keys Exceeded – The Maximum Number of Keys Exceeded
status bit indicates whether or not more keys than allowed are currently being
touched.
1 TPC Exceeded
0 TPC Not Exceeded
Fault – The Fault code represents the currently asserted fault condition.
00 Encoding 0 – No fault detected
01 Encoding 1 – Short to VSS detected
10 Encoding 2 – Short to VDD detected
6
0
0
Figure 24. Fault Register
5
0
0
4
0
0
Description
3
0
0
MNKE
2
0
1
0
FAULT
0
0
MPR084
21
2
C