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SCA1000-D01 View Datasheet(PDF) - Murata Manufacturing

Part NameDescriptionManufacturer
SCA1000-D01 PRODUCT SPECIFICATION FOR XY-DUAL AXIS ACCELEROMETER Murata
Murata Manufacturing Murata
SCA1000-D01 Datasheet PDF : 18 Pages
First Prev 11 12 13 14 15 16 17 18
SCA1000-D01
channel acceleration sensor element electrode. This causes electrostatic force, which
deflects the beam of the sensing element and simulates the acceleration to the positive
direction. X-channel self-test is de-activated by giving MEAS command.
Self test for Y-channel (STY): STY command activates the circuit’s self test function for
the Y-channel. Internal charge pump is activated and high voltage is applied to the Y-
channel acceleration sensor element electrode. This causes electrostatic force, which
deflects the beam of the sensing element and simulates the acceleration to the positive
direction. Y-channel self-test is de-activated by giving MEAS command.
Read X-channel acceleration (RDAX): RDAX command provides access to AD
converted X-channel acceleration signal stored in acceleration data register X. During
normal operation acceleration data register X is loaded in every 150 µs, and the load
operation is disabled whenever the CSB signal is low, hence CSB has to stay high at least
150 µs prior the RDAX command in order to guarantee correct data. Data output is an 11-
bit digital word, which is feed out MSB first and LSB last. (See Figure 7).
CSB
SCK
MOSI
M ISO
0
1
2
3
4
5
6
7
8
9
10 11
12 13
14 15
16 17 18
COMMAND
H IG H IM P ED A N C E
10
9
DATA OUT
8
7
6
5
4
3
2
1
0
Figure 7. RDAX command and data transmission over the SPI
Read Y-channel acceleration (RDAY): RDAY command provides access to AD
converted Y-channel acceleration signal which is stored in acceleration data register Y.
During normal operation acceleration data register Y is loaded in every 150 µs and the
load operation is disabled whenever the CSB signal is low, hence CSB has to stay high at
least 150 µs prior the RDAY command in order to guarantee correct data. Data output is
an 11-bit digital word, which is feed out MSB first and LSB last
Detailed information on all SPI commands is presented in document IC008 Dual Axis
Acceleration Sensor ASIC, Digital Specification.
Murata Electronics Oy
www.muratamems.fi
Doc. Nr. 8225700
15/18
Rev.C
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