MMA8205EGR2 Freescale Semiconductor, MMA8205EGR2 Datasheet - Page 8

• Manufacturer Part Number: MMA8205EGR2
• Description: Board Mount Accelerometers X- AXIS 50G SOIC 16
• Manufacturer: Freescale Semiconductor
• Series: MMA82r

Specifications of MMA8205EGR2

• 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

SECTION 2 SUPPORT MODULES
2.1
A temperature-compensated internal oscillator provides a stable timing reference for the device. The oscillator is factory-trimmed
to operate at a nominal frequency of 4 MHz.
2.2
The internal voltage regulator has minimum voltage level detection, which will hold the device in reset and prevent data
transmission should the regulator output fall during operation. The regulator also has an input voltage clamp to limit the power
dissipated in the regulator during voltage spikes on the H
2.3
180-Hz, 2-pole and 400 Hz 4-pole Bessel filter options are provided. The low-pass filter is implemented within a two stage
switched capacitor amplifier. The overall gain of the Bessel filter is set to a fixed value. The output of the Bessel filter output acts
as the input to the A/D converter and is also buffered and made available at the C
2.4
A number of abnormal conditions are detected by MMA81XXEG/MMA82XXEG/MMA82XXTEG and the behavior of the device
altered if a fault is detected. Detected fault conditions and consequent device behavior is summarized in the table below. Certain
conditions, e.g. ground loss, are qualified by device configuration.
cable qualifiers and effects.
MMA81XXEG
8
Sustained Undervoltage, H
Transient Undervoltage, H
Undervoltage, C
MASTER OSCILLATOR
VOLTAGE REGULATION
BESSEL FILTER
STATUS MONITORING
Frame Timeout
Ground Fault
Parity Fault
Condition
Fuse Fault
REG
CAP
CAP
Internally regulated voltage below operating
level
Voltage at HCAP below operating level for more
than 1 ms
Bus voltage remains below frame threshold
(t
Voltage at HCAP below operating level for less
than 1 ms
OTP fuse threshold failure
Parity failure detected in factory or customer
programmed OTP data
Ground loss detected for more than 4.096 ms
TO
Table 2-1 Fault Condition Response Summary
) longer than specified time.
Description
CAP
pin which might come from the two or three wire satellite bus.
Figure 2-1
provides a representation of fault conditions, appli-
Device continuously undergoes reset, bus switch
open, no response to DSI commands
Undervoltage (U) flag set, short-word Read
Acceleration Data response value equals zero
Accelerometer Status (S) flag set, short-word Read
Acceleration Data response value equals zero
Accelerometer Status (S) and Ground Fault (GF) flags
set, short-word Read Acceleration Data response
value equals zero
FIL
pin.
Device Behavior
Freescale Semiconductor
Sensors