KP100 Infineon Technologies, KP100 Datasheet - Page 10

• Manufacturer Part Number: KP100
• Description: Surface Mount Capacitive Silicon Absolute Pressure Sensor
• Manufacturer: Infineon Technologies

Data Book
The sensor array is subdivided into two independent areas. In diagnosis 2 mode the
difference signal of the two areas is measured. A drift of the diagnosis 2 value indicates
a mechanical damage of one or more cells. For an efficient use of this mode it is
recommended to store the initial diagnosis 2 value on the application board (e.g. in the
µC flash) already at the production line.
Diagnosis mode 3:
This mode applies a general reset to the chip and initiates a special self-test sequence,
where the complete digital filter part is checked. After programming the diagnosis 3
mode and activating it by a high-pulse at CS, the following 10 read write cycles must
deliver the output values listed below:
Number
Output value
(hex)
Note that between these 10 read-write cycles no further CS pulse must be applyed, in
order not to end or to restart the diagnosis 3 mode. Also note that no DTA_RDY must be
skipped in this mode, since each value will be overwritten by the subsequent value.
Any error in these codes indicates an error in the digital circuitry of the chip.
Additionally, this diagnosis mode also resets the fuse-check latch. However, a remaining
error conditiotion in the fuses will immediately reestablish this latch, so that the output is
set to FFFFH.
1
0000 0000 0000 0000 0900 25E6 4E8D 741B 9135 A664
2
3
4
10
5
6
7
8
9
KP100
2003-05
10