MMA8653FC datasheet(28/56 Pages) FREESCALE

28 / 56 page

MMA8653FC

Sensors

Freescale Semiconductor, Inc.

6.5

Portrait/Landscape embedded function registers

For more details on the meaning of the different user configurable settings and for example code refer to Freescale application note

AN4078.

6.5.1

0x10: PL_STATUS, Portrait/Landscape Status Register

This status register can be read to get updated information on any change in orientation by reading Bit 7, or on the specifics of

the orientation by reading the other bits. For further understanding of Portrait Up, Portrait Down, Landscape Left, Landscape

Right, Back and Front orientations please refer to Figure 3 "Landscape/Portrait orientation". The interrupt is cleared when reading

the PL_STATUS register.

Figure 26. 0x10: PL_STATUS, Portrait/Landscape Status Register (Read Only)

•

NEWLP is set to 1 after the first orientation detection after a STANDBY to ACTIVE transition, and whenever a change in LO,

BAFRO, or LAPO occurs.

•

NEWLP bit is cleared anytime PL_STATUS register is read.

•

The Orientation mechanism state change is limited to a maximum 1.25g.

•

LAPO BAFRO and LO continue to change when NEWLP is set.

•

The current position is locked if the absolute value of the acceleration experienced on any of the three axes is greater than

1.25g.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

NEWLP

LAPO[1]

LAPO[0]

BAFRO

Table 18. PL_STATUS register

Field

Description

NEWLP

Portrait/Landscape status change flag. Default value: 0.

0: No change

1: BAFRO and/or LAPO and/or Z-Tilt lockout value has changed

Z-Tilt Angle Lockout. Default value: 0.

0: Lockout condition has not been detected

1: Z-Tilt lockout trip angle has been exceeded. Lockout has been detected.

LAPO[1:0](1)

1. The default power up state is BAFRO = 0, LAPO = 0, and LO = 0.

Landscape/Portrait orientation. Default value: 00

00: Portrait Up: Equipment standing vertically in the normal orientation

01: Portrait Down: Equipment standing vertically in the inverted orientation

10: Landscape Right: Equipment is in landscape mode to the right

11: Landscape Left: Equipment is in landscape mode to the left

BAFRO

Back or Front orientation. Default value: 0

0: Front: Equipment is in the front facing orientation

1: Back: Equipment is in the back facing orientation

MMA8653FC Datasheet(PDF) 28 Page - Freescale Semiconductor, Inc

MMA8653FC Datasheet(HTML) 28 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

Datasheet Download

Link URL