KMA199,115 NXP Semiconductors, KMA199,115 Datasheet - Page 21

• Manufacturer Part Number: KMA199,115
• Description: IC SENSOR PROG ANGLE SOT880
• Manufacturer: NXP Semiconductors

Specifications of KMA199,115

• Operational Type: Programmable Angle Sensor
• Operating Supply Voltage: 5 V
• Supply Current: 5 mA to 10 mA
• Package / Case: SOT-880
• Mounting Style: Through Hole
• Supply Voltage (min): 4.5 V
• Supply Voltage (max): 5.5 V
• Maximum Output Current: 20 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
KMA199_1
Product data sheet
13.3.3 Entering the command mode
13.4 Cyclic redundancy check
After a power-on reset, the sensor provides a time slot t
mode. A specific command sequence has to be send (see
is not entered, the sensor starts in the normal operating mode. However the signature can
be written by the master, if the sensor switches to diagnostic mode.
During the command mode sequence, the analog output is enabled. The external
programming hardware has to overdrive the output with the current I
is activated, the analog output is disabled and pin OUT/DATA operates as a digital
interface.
As already mentioned in
To calculate this value, the CRC needs to be generated with the MSB of the EEPROM
data word at first over all corresponding addresses in increasing order.
All addresses from 0h to Fh have to be read out for calculating the checksum. The Least
Significant Byte (LSB) of address Fh which contains the previous checksum must be
overwritten with 0h before the calculation can be started.
Finally, the internal charge pump has to be enabled for programming by setting the bits
EEP_CP_CLOCK_EN and EEP_WRITE_EN (see
The generator polynomial for the calculation of the checksum is:
With a start value of FFh and the data bits are XOR at the x
G x ( )
Fig 17. OWI command mode procedure
=
x
8
+
x
2
OWI
V
+ +
DD
All information provided in this document is subject to legal disclaimers.
x
1
Rev. 01 — 26 April 2010
Section
START
7, there is an 8-bit checksum for the EEPROM data.
command
94h
t
cmd(ent)
9Bh
signature
Table
A4h
cmd(ent)
16) and waiting for t
Figure
Programmable angle sensor
8
point.
STOP
for entering the command
17). If command mode
od
001aag819
. If command mode
© NXP B.V. 2010. All rights reserved.
KMA199
cp
.
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