KP125 EVAL BOARD Infineon Technologies, KP125 EVAL BOARD Datasheet - Page 34

• Manufacturer Part Number: KP125 EVAL BOARD
• Description: BOARD EVALUATION KP125
• Manufacturer: Infineon Technologies
• Type: Pressure Sensorr

Specifications of KP125 EVAL BOARD

• Contents: Fully Assembled Evaluation Board
• For Use With/related Products: KP125
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: KP125EVALBOARDIN

7.4
Test mode must be activated by writing “2CEh” to the status register (Addr. 08h). Any other sequence written to
the status register disables the test mode and brings the chip back to normal operation. The cyclic EEPROM
refresh and the FEC ERR / ACT flag calculation is deactivated in test mode, therefore refresh and calc FEC has
to be triggered manually.
Available test modes are encoded in four bits in the test mode selection register (see
1 test is selectable at a time. The Iddq test mode and the scan test mode can only be deactivated by a power on
reset. Available test modes are shown in
Figure 47
Diag 1
In this mode, the sensing elements are disconnected from the complete signal path. The sensor gets an input the
correlates to a mid input pressure. By this the whole signal path can be checked without the pressure cells.
Diag 2
In this mode, malfunction of the sensor cell can be detected (e.g. broken membrane). The User’s Manual provides
the optimal concept by realizing two separate pressure cells. In the normal mode the two sensing and reference
cells are connected in a Wheatstone bridge. In Diag2 mode the cells are switched in a way that sensing and
reference cells are parallel within the Wheatstone bridge (refer to
User’s Manual
TSTMD(3:0)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Test Modes
Available Test Modes
description
no test (default)
diag1
diag2
reserved
analog measurement
reserved
reserved
clock test, internal 3MHz clock switched to data_out
sd-stream test, SD data stream switched to data_out
reset test
contact test, VDD can be measured on V
DAC test
reserved
reserved
reserved
reserved
Figure
44.
34
Figure
Digital Interface for EEPROM access
45).
Evalkit for Pressure Sensors
out
Figure
Rev. 1.1, 2007-11-23
29). Therefore only
KP12x Kit