KMA200 datasheet(23/33 Pages) PHILIPS

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KMA200

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Product data sheet

Rev. 8 — 7 December 2011

23 of 33

NXP Semiconductors

KMA200

Programmable angle sensor

Address B: storage the assembly lot no. (maximum 65535)

13.4 Write RAM (0nh), read RAM (1nh)

To write data to the RAM the command byte 0nh (n is the address of the data) followed by

the 16-bit data has to be send. To read data from the RAM, the command byte 1nh has to

be send. If CS is activated again, the RAM contents at the specified address is clocked

out. Note that at power-on addresses 00h to 0Fh are read from the EEPROM into the

RAM.

13.5 Calculate CRC-16 and program EEPROM (30h)

To program the EEPROM, the configuration data has to be written to the RAM addresses

00h to 0Eh. Afterwards, the command byte 30h has to be sent and the EEPROM

programming voltage has to be applied at the VDD pin. The KMA200 calculates the

CRC-16 check sum and writes the RAM constants at addresses 00h to 0Fh to the

EEPROM. This command is only executed when the EP bit in the control information word

is logic 0 on power-on. If the EP bit is logic 1, this command is ignored.

Table 9.

EEPROM content

Address

Name

Description

sensor_offset_1

dependent of individual production calibration results

sensor_offset_2

dependent of individual production calibration results

zero_angle

mechanical 0

 position relative to the zero point of the

sensor output; used for zero-angle calibration

default value: 0000h (0

)

angular_range

definition of the angular input range that is mapped to the

whole analog output signal range

default value: 0000h (180

)



thresh

threshold for programmable output in mode 3

default value: internal CRC of the addresses 0, 1, 5, C, D

and E

temp_vref, temp_offs

dependent of individual production calibration results

6Tshut(res), Twarn(res)

temperature warning and temperature shutdown level; used

for temperature supervision default value: FAF8h

(temperature shutdown at 200

C, warning at 198 C)

ctrl1

control information word 1; used for selection of various

operating modes default value: 4046h (output mode

standard + mode 1)

ctrl2

control information word 2; configures the diagnostic

functions default value: 0704h (temperature supervision is

on; input stage diagnosis is on; output stage diagnosis is off)

9V(CL)l, V(CL)u

clamping voltage levels of analog outputs

default value: 00FFh (clamping level LOW at 5 %VDD,

clamping level HIGH at 95 %VDD)

id1

sensor identifier 1; this data is not evaluated by the KMA200

and is used for sensor identification

id2

sensor identifier 2; this data is not evaluated by the KMA200

and is used for sensor identification

anom, tc_anom

dependent of individual production calibration results

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