MMA8205EG Freescale Semiconductor, MMA8205EG Datasheet - Page 23

• Manufacturer Part Number: MMA8205EG
• Description: Board Mount Accelerometers X- AXIS 50G SOIC 16
• Manufacturer: Freescale Semiconductor
• Series: MMA82r

Specifications of MMA8205EG

• Sensing Axis: X
• Acceleration: 50 g
• Sensitivity: 8.02 mV/g
• Package / Case: SOIC-16
• Axis: X or Y
• Acceleration Range: ±50g
• Voltage - Supply: 6.3 V ~ 30 V
• Output Type: Digital
• Bandwidth: -
• Interface: SPI
• Mounting Type: Surface Mount
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Sensors
Freescale Semiconductor
4.6
Upon verification of the CRC associated with a Read Acceleration Data command, MMA81XXEG/MMA82XXEG/MMA82XXTEG
initiates an analog-to-digital conversion. The conversion occurs during the inter frame separation (IFS) and involves a delay
during which the BUSIN line is allowed to stabilize, a sample period and finally the translation of the analog signal level to a digital
result.
4.6.1
The Request ID Information command may be transmitted as either a DSI long command structure or a DSI short command
structure of any length. The data field in the command structure is ignored but is included in the CRC calculation. No action is
taken by MMA81XXEG/MMA82XXEG/MMA82XXTEG if this command is sent to the DSI Global Device Address.
4.6.2
The Clear command may be transmitted as either a DSI long command structure or a DSI short command structure of any length.
The data field in the command structure is ignored but is included in the CRC calculation.
When a Clear Command is successfully decoded and the address field matches either the assigned device address or the DSI
Global Device Address, the bus switch is opened and the device undergoes a full reset operation.
There is no response to the Clear Command.
D15
A3
Response
Length
10
11
12
13
14
15
8
9
D14
ACCELERATION MEASUREMENT TIMING
A2
Request ID Information Command
Clear Command
D13
A1
D14
0
D12
A0
Table 4-10 Long Response Structure - Request ID Information Command
Table 4-9 Short Response Structure - Request ID Information Command
A3
A3
A3
A3
D11
0
Table 4-8 Request ID Information Command Structure
D13
0
A2
A2
A2
D10
A2
Address
Address
0
Table 4-11 Clear Command Structure
A1
A1
A1
A1
D9
0
D12
0
A0
A0
A0
A0
D8
D11
0
0
Data
D10
C3
C3
D7
V2
0
0
0
D9
0
C2
D6
V1
Command
C2
Response
Command
1
1
D8
0
D5
V0
C1
C1
0
1
D7
V2
D4
C0
C0
0
0
1
V1
D6
D3
0
0 to 8 bits
0 to 8 bits
V0
CRC
D5
CRC
D2
1
D4
0
D1
0
D3
0
D0
0
D2
1
MMA81XXEG
D1
0 to 8 bits
0
CRC
D0
0
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