Data Sheet

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MLX90393

Micropower Triaxis® Magnetometer Datasheet

The customer area houses 3 types of data:

• Analog configuration bits

• Digital configuration bits

• Informative (free) bits

The latter can be filled with customer content freely, and covers the address span from (and including)

0x0Ah to 0x1Fh, a total of 352 bits. The memory mapping of volatile and non-volatile memory on address

level is identical. The volatile memory map is given in Figure 8.

Figure 8: Customer area memory map.

The non-volatile memory can only be written (HS store command) if pin VDD is supplied with 3.3V

minimum, otherwise the write sequence can not be performed in a reliable way. Additionally, this HS

command was designed to be used as one-time calibration, but not as multi write-cycle memory within the

application. In case memory is written within the application, the number of write cycles should be kept to a

minimum. There is no limit to the write cycles in the volatile memory (WR write command).

9.1 Parameter Description

The meaning of each customer accessible parameter is explained in this section. The customer area of both

the volatile and the non-volatile memory can be written through standard SPI and I

C communication,

within the application. No external high-voltages are needed to perform such operations, nor access to

dedicated pins that need to be grounded in the application.

ANA_RESERVED_LOW : Reserved IO trimming bits

BIST : Enabled the on-chip coil, applying a Z-field [Built-In Self Test]

Z_SERIES : Enable all plates for Z-measurement

ADDRESS 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0x00h BIST Z_SERIES

0x01h

TRIG_INT_

WOC_DIFF EXT_TRIG TCMP_EN

0x02h

0x03h

0x04h

0x05h

0x06h

0x07h

0x08h

0x09h

0x0Ah

0x0Bh

0x0Ch

0x0Dh

0x0Eh

0x0Fh

0x10h

0x11h

0x12h

0x13h

0x14h

0x15h

0x16h

0x17h

0x18h

0x19h

0x1Ah

0x1Bh

0x1Ch

0x1Dh

0x1Eh

0x1Fh

FREE

OFFSET_X

OFFSET_Y

OFFSET_Z

WOXY_THRESHOLD

WOZ_THRESHOLD

WOT_THRESHOLD

OSR2

RES_XYZ

DIG_FILT

OSR

SENS_TC_HT

SENS_TC_LT

BIT NUMBER

ANA_RESERVED_LOW

GAIN_SEL

HALLCONF

COMM_MODE

BURST_SEL (zyxt)

BURST_DATA_RATE

3901090393 Data Sheet

Rev002 Page 19 Feb-2015