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Sensors
Freescale Semiconductor, Inc. 20
MMA7660FC
AWSR[1:0] NAME DESCRIPTION
00 AW32 32 Samples/Second Auto-Wake Mode
For portrait/landscape detection: The device takes and averages 32 g-cell measurements every 31.25 ms in
Auto-Wake. The update rate is 32 samples per second. These measurements update the XOUT (0x00), YOUT
(0x01), and ZOUT (0x02) registers also.
01 AW16 16 Samples/Second Auto-Wake Mode
For portrait/landscape detection: The device takes and averages 32 g-cell measurements every 62.5 ms in
Auto-Wake. The update rate is 16 samples per second. These measurements update the XOUT (0x00), YOUT
(0x01), and ZOUT (0x02) registers also.
10 AW8 8 Samples/Second Auto-Wake Mode
For portrait/landscape detection: The device takes and averages 32 g-cell measurements every 125 ms in
Auto-Wake. The update rate is 8 samples per second. These measurements update the XOUT (0x00), YOUT
(0x01), and ZOUT (0x02) registers also.
11 AW1 1 Sample/Second Auto-Wake Mode
For portrait/landscape detection: The device takes and averages 32 g-cell measurements every 1000 ms in
Auto-Wake. The update rate is 1 sample per second. These measurements update the XOUT (0x00), YOUT
(0x01), and ZOUT (0x02) registers also.
FILT[2:0] DESCRIPTION
000 Tilt debounce filtering is disabled. The device updates portrait/landscape every reading at the rate set by AMSR[2:0] or
AWSR[1:0]
001 2 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
010 3 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
011 4 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
100 5 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
101 6 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
110 7 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.
111 8 measurement samples at the rate set by AMSR[2:0] or AWSR[1:0] have to match before the device updates portrait/
landscape data in TILT (0x03) register.