MMA8653FC

Sensors

20

Freescale Semiconductor, Inc.

6

Register Descriptions

6.1

Register address map

Note: Auto-increment addresses that are not a simple increment are highlighted in bold.

Table 12. MMA8653FC Register Address Map

Field

Type

Register

Address

Auto-Increment Address

Default

Hex

Value

Comment

F_READ = 0 F_READ = 1

1. The register data is only valid in ACTIVE mode.

2. Register contents are reset when transition from STANDBY to ACTIVE mode occurs.

R

0x00

0x01

00000000

0x00

Real time status

OUT_X_MSB(1)

R

0x01

0x02

0x03

Output

—

[7:0] are 8 MSBs of 10-bit sample.

OUT_X_LSB(1)

R

0x02

0x03

0x00

Output

—

[7:6] are 2 LSBs of 10-bit real-time sample

OUT_Y_MSB(1)

R

0x03

0x04

0x05

Output

—

[7:0] are 8 MSBs of 10-bit real-time sample

OUT_Y_LSB(1)

R

0x04

0x05

0x00

Output

—

[7:6] are 2 LSBs of 10-bit real-time sample

OUT_Z_MSB(1)

R

0x05

0x06

0x00

Output

—

[7:0] are 8 MSBs of 10-bit real-time sample

OUT_Z_LSB(1)

R

0x06

0x00

Output

—

[7:6] are 2 LSBs of 10-bit real-time sample

Reserved

R

0x07–0x0A

—

00000000

0x00

Reserved. Read return 0x00.

SYSMOD

R

0x0B

0x0C

00000000

0x00

Current System Mode

INT_SOURCE(1)(2)

R

0x0C

0x0D

00000000

0x00

Interrupt status

3. Register contents are preserved when transition from ACTIVE to STANDBY mode occurs.

R

0x0D

0x0E

01001010

0x5A Device ID (0x5A)

XYZ_DATA_CFG(3)(4)

4. Modification of this register’s content can only occur when device is in STANDBY mode, except CTRL_REG1 ACTIVE bit and CTRL_REG2 RST bit.

R/W

0x0E

0x0F

00000000

0x00

Dynamic Range Settings

Reserved

R

0x0F

—

00000000

0x00

Reserved. Read return 0x00.

PL_STATUS(1)(2)

R

0x10

0x11

00000000

0x00

Landscape/Portrait orientation status

PL_CFG(3)(4)

R/W

0x11

0x12

10000000

0x80

Landscape/Portrait configuration.

PL_COUNT(3)(4)

R/W

0x12

0x13

00000000

0x00

Landscape/Portrait debounce counter

PL_BF_ZCOMP(3)

R

0x13

0x14

01000100

0x44

Back/Front, Z-Lock Trip threshold

PL_THS_REG(3)

R

0x14

0x15

10000100

0x84

Portrait to Landscape Trip angle

FF_MT_CFG(3)(4)

R/W

0x15

0x16

00000000

0x00

Freefall/Motion functional block configuration

FF_MT_SRC(1)(2)

R

0x16

0x17

00000000

0x00

Freefall/Motion event source register

FF_MT_THS(3)(4)

R/W

0x17

0x18

00000000

0x00

Freefall/Motion threshold register

FF_MT_COUNT(3)(4)

R/W

0x18

0x19

00000000

0x00

Freefall/Motion debounce counter

Reserved

R

0x19–0x28

—

00000000

0x00

Reserved. Read return 0x00.

ASLP_COUNT(3)(4)

R/W

0x29

0x2A

00000000

0x00

Counter setting for Auto-SLEEP/WAKE

CTRL_REG1(3)(4)

R/W

0x2A

0x2B

00000000

0x00

Data Rates, ACTIVE Mode.

CTRL_REG2(3)(4)

R/W

0x2B

0x2C

00000000

0x00

Sleep Enable, OS Modes, RST, ST

CTRL_REG3(3)(4)

R/W

0x2C

0x2D

00000000

0x00

Wake from Sleep, IPOL, PP_OD

CTRL_REG4(3)(4)

R/W

0x2D

0x2E

00000000

0x00

Interrupt enable register

CTRL_REG5(3)(4)

R/W

0x2E

0x2F

00000000

0x00

Interrupt pin (INT1/INT2) map

OFF_X(3)(4)

R/W

0x2F

0x30

00000000

0x00

X-axis offset adjust

OFF_Y(3)(4)

R/W

0x30

0x31

00000000

0x00

Y-axis offset adjust

OFF_Z(3)(4)

R/W

0x31

0x0D

00000000

0x00

Z-axis offset adjust