Document
Freescale Semiconductor Data Sheet: Technical Data
Document Number: MMA52xxKW Rev. 11, 08/2012
Xtrinsic MMA52xxKW PSI5 Inertial Sensor
The MMA52xxKW family, a SafeAssure solution, includes the AKLV27 and PSI5 Version 1.3 compatible overdamped X-axis satellite accelerometers.
Features
• ±60g to ±480g Full-Scale Range • Selectable 400 Hz, 3 Pole, or 4 pole Low-Pass Filter • Single Pole High Pass Filter with Fast Startup and Output Rate Limiting • PSI5 Version 1.3 Compatible
– PSI5-P10P-500/3L Compatible – Programmable Time Slots with 0.5 μs Resolution – Selectable Baud Rate: 125 kBaud or 190.5 kBaud – Selectable Data Length: 8 or 10 bits – Selectable Error Detection: Even Parity, or 3-bit CRC – Optional Daisy Chain with External Low-Side Switch – Two-Wire Programming Mode • 16 μs Internal Sample Rate, with Interpolation to 1 μs • Pb-Free 16-Pin QFN, 6 by 6 Package • Qualified AECQ100, Revision G, Grade 1 (-40°C to +125°C) (http://www.aecouncil.com/)
Typical Applications
• Airbag Front and Side Crash Detection
Device MMA5206KW MMA5212KW MMA5224KW MMA5248KW MMA5206KWR2 MMA5212KWR2 MMA5224KWR2 MMA5248KWR2
ORDERING INFORMATION
Axis
Range
Package
X
60g
2086-01
X
120g
2086-01
X
240g
2086-01
X
480g
2086-01
X
60g
2086-01
X
120g
2086-01
X
240g
2086-01
X
480g
2086-01
Shipping Tubes Tubes Tubes Tubes
Tape & Reel Tape & Reel Tape & Reel Tape & Reel
For user register array programming, please consult your Freescale representative.
MMA52xxKW
Bottom View
16-PIN QFN CASE 2086-01
Top View
VSSA BUS_SW TEST VBUF
16 15 14 13
VCC 1 VSS 2 IDATA 3 VSS 4
17 56
12 VSSA 11 VREGA 10 CS 9 VREG 78
PCM SLCK DOUT
DIN
PIN CONNECTIONS
© 2010-2012 Freescale Semiconductor, Inc. All rights reserved.
Application Diagram
C4
C5
C6
Note: Pin names and references may differ from PSI5 V1.3 pin names and references
VVBVUBFUF
VCC
VREG
IDATA
VREGA MMA52xx
R1
R2
C2
C3
CS
VSSA
SCLK DO DI PCM
VSS
R3
BUS_SW Optional for Daisy Chain
VCE
C1
VSS
M1
VSS_OUT
Ref Des
C1 C3 C2 C4, C5, C6 R1 R2 R3 M1
Type
Ceramic Ceramic Ceramic Ceramic General Purpose General Purpose General Purpose N-Channel MOSFET
Figure 1. Application Diagram
External Component Recommendations
Description
2.2 nF, 10%, 50V minimum, X7R 470 pF, 10%, 50V minimum, X7R 15 nF, 10%, 50V minimum, X7R
1 μF, 10%, 10V minimum, X7R
Purpose
VCC Power Supply Decoupling and Signal Damping IDATA Filtering and Signal Damping VCC Power Supply Decoupling Voltage Regulator Output Capacitor(s)
82Ω, 5%, 200 PPM 27Ω, 5%, 200 PPM 20 kΩ, 5%, 200 PPM
VCC Filtering and Signal Damping IDATA Filtering and Signal Damping Gate Resistor for External Low-Side Daisy Chain FET
—
Low-Side Daisy Chain Transistor
Device Orientation
xxxxxxx xxxxxxx
xxxxxxx xxxxxxx
xxxxxxx xxxxxxx
X: 0g
X: +1g
X: 0g
xxxxxxx xxxxxxx X: -1g
X: 0g
EARTH GROUND
Figure 2. Device Orientation Diagram
X: 0g
MMA52xxKW 2
Sensors Freescale Semiconductor, Inc.
Internal Block Diagram
VCC
CS
SCLK
SPI
DIN
DOUT
Bu.