MMA8652FC datasheet(35/65 Pages) NXP

35 / 65 page

MMA8652FC

Sensors

Freescale Semiconductor, Inc.

6.7.4

0x13: PL_BF_ZCOMP Back/Front and Z Compensation register

The Z-Lock angle compensation bits allows you to adjust the Z-lockout region from 14° up to 43°. On power-up, the default Z-lockout

angle is set to the default value of 29°. The back-to-front trip angle is set by default to ±75°, and this angle can be adjusted from

a range of 65° to 80° (with 5° step increments).

6.7.5

0x14: P_L_THS_REG Portrait/Landscape Threshold and Hysteresis register

This register represents the Portrait-to-Landscape trip threshold register used to set the trip angle for transitioning from Portrait

to Landscape mode and from Landscape to Portrait mode. This register includes a value for the hysteresis.

Table 41. 0x13: PL_BF_ZCOMP register (Read/Write)

Back to Register Address Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

BKFR[1]

BKFR[0]

—

ZLOCK[2]

ZLOCK[1]

ZLOCK[0]

Table 42. PL_BF_ZCOMP register

Bit(s)

Field

Description

Notes

7–6

BKFR[7:6]

Back/Front trip angle threshold(1)

• Step size = 5°

• Range = ±(65° to 80°)

1. All angles are accurate to ±2°.

≥ ±75° (default)

5–3

—

Can be 0 or 1.

2–0

ZLOCK[2:0]

Z-lock angle threshold(1)

• Step size is 4°

• Range is from 14° to 43°

100

≥ 29° (default)

111

≥ 43° (maximum)

Table 43. Z-lock threshold angles

Z-lock Value

Threshold Angle

0x00

14°

0x01

18°

0x02

21°

0x03

25°

0x04

29°

0x05

33°

0x06

37°

0x07

42°

Table 44. Back/Front orientation definitions

BKFR

Back/Front Transition

Front/Back Transition

Z < 80° or Z > 280°

Z > 100° and Z < 260°

Z < 75° or Z > 285°

Z > 105° and Z < 255°

Z < 70° or Z > 290°

Z > 110° and Z < 250°

Z < 65° or Z > 295°

Z > 115° and Z < 245°

Table 45. 0x14: P_L_THS_REG register (Read/Write)

Back to Register Address Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

P_L_THS[4]

P_L_THS[3]

P_L_THS[2]

P_L_THS[1]

P_L_THS[0]

HYS[2]

HYS[1]

HYS[0]

Table 46. P_L_THS_REG register

Bit(s)

Field

Description

Notes

MMA8652FC 数据表(PDF) 35 Page - NXP Semiconductors

MMA8652FC 数据表(HTML) 35 Page - NXP Semiconductors

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 57 58 59 60 61 62 63 64 65

数据表下载