MMA5206WR2 Freescale Semiconductor, MMA5206WR2 Datasheet - Page 33

• Manufacturer Part Number: MMA5206WR2
• Description: IC ACCELER 60G X-AXIS 16QFN
• Manufacturer: Freescale Semiconductor

Specifications of MMA5206WR2

• Sensing Axis: X
• Acceleration: 60 g
• Sensitivity: 0.125 g/LSB
• Package / Case: QFN-16
• Supply Voltage (max): 25 V
• Supply Current: 4 mA to 8 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4
4.1
face, with parallel or serial (daisy-chain) connections to the satellite modules.
for multiple satellite modules in parallel.
4.2
regulated voltage. Data transmissions and synchronization control from the PSI5 master to the device are accomplished via mod-
ulation of the supply voltage. Data transmissions from the device to the PSI5 master are accomplished via modulation of the cur-
rent on the power supply line.
4.2.1
Upon reception of a synchronization pulse, the device delays a specified period of time, called a time slot, before transmitting
acceleration data. For more details regarding time slots, refer to
Sensors
Freescale Semiconductor
The communication interface between a master device and the MMA52xx is established via a PSI5 compatible 2-wire inter-
The device uses a two wire interface for both its power supply (V
The PSI5 master modulates the supply voltage in the positive direction to provide synchronization of the satellite sensor data.
PSI5 LAYER AND PROTOCOL
Communication Interface Overview
Data Transmission Physical Layer
Synchronization Pulse
V
IDLE
I
IDLE
+ ΔV
+ I
V
SYNC
GND
I
MOD
IDLE
IDLE
MASTER DEVICE
Figure 26. Synchronous Communication Overview
Figure 25. PSI5 Satellite Interface Diagram
Section
V
V
V
V
V
V
V
V
CC
SS
CC_OUT
SS_OUT
CC
SS
CC_OUT
SS_OUT
CC
SATELLITE MODULE #1
SATELLITE MODULE #2
), and data transmission. The PSI5 master supplies a pre-
3.1.4, and
SYNC PULSES
Figure 25
Components
Components
Discrete
Discrete
Section
shows one possible system configuration
4.5.
MMA52xx
MMA52xx
V
I
V
V
I
V
Data
Data
CC
SS
CC
SS
MMA52xxWR
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