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PDF MMA6823QR2 Data sheet ( Hoja de datos )
| Número de pieza | MMA6823QR2 | |
| Descripción | Dual Axis SPI Inertial Sensor | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Freescale Semiconductor
Technical Data
Dual Axis SPI Inertial Sensor
MMA68xx is a SPI-based, 2-axis, medium-g, over-damped lateral
accelerometer designed for use in automotive airbag systems.
Features
• ±20g to ±120 g full-scale range, independently specified for each axis
• 3.3 V or 5 V single supply operation
• SPI-compatible serial interface
• 10-bit digital signed or unsigned SPI data output
• Independent programmable arming functions for each axis
• Twelve low-pass filter options, ranging from 50 Hz to 1000 Hz
• Optional offset cancellation with > 6s averaging period and < 0.25 LSB/s slew
rate
• Pb-Free 16-Pin QFN-6x6 Package
Referenced Documents
• AEC-Q100, Revision G, dated May 14, 2007
MMA68xx
wwRwe.Dvat2aS, h0ee6t4/2U0.co1m0
MMA68xx
DUAL AXIS SPI INERTIAL SENSOR
Bottom View
16-PIN QFN
CASE 1477-02
Top View
Device
MMA6811QR2
MMA6813QR2
MMA6821QR2
MMA6823QR2
MMA6826QR2
MMA6827QR2
ORDERING INFORMATION
X-Axis
Range
Y-Axis
Range
±60g
±50g
±120g
±120g
±60g
±120g
±25g
±50g
±25g
±60g
±60g
±120g
Shipping
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
16 15 14 13
VREGA 1
VSS 2
VREG 3
VSS 4
17 12 CS
11 MOSI
10 SCLK
9 VCC
5678
PIN CONNECTIONS
© Freescale Semiconductor, Inc., 2010. All rights reserved.
1 page  
2 ELECTRICAL CHARACTERISTICS
www.DataSheet4U.com
2.1 Maximum Ratings
Maximum ratings are the extreme limits to which the device can be exposed without permanently damaging it.
# Rating
1 Supply Voltage
2 CREG, CREGA
3 SCLK, CS, MOSI,VPP/TEST
4 ARM_X, ARM_Y
5 MISO (high impedance state)
6 Acceleration without hitting internal g-cell stops
7 Acceleration without saturation of internal circuitry
8 Powered Shock (six sides, 0.5 ms duration)
9 Unpowered Shock (six sides, 0.5 ms duration)
10 Drop Shock (to concrete surface)
Electrostatic Discharge
11 Human Body Model (HBM)
12 Charge Device Model (CDM)
13 Machine Model (MM)
14 Storage Temperature Range
15 Thermal Resistance - Junction to Case
Symbol
VCC
VREG
VIN
VIN
VIN
ggcell_Clip
gADC_Clip
gpms
gshock
hDROP
VESD
VESD
VESD
Tstg
θJC
Value
-0.3 to +7.0
-0.3 to +3.0
-0.3 to VCC + 0.3
-0.3 to VCC + 0.3
-0.3 to VCC + 0.3
±500
±375
±1500
±2000
1.2
±2000
±750
±200
-40 to +125
2.5
Unit
V
V
V
V
V
g
g
g
g
m
V
V
V
°C
°C/W
(3)
(3)
(3)
(3)
(3)
(3, 18)
(3)
(5, 18)
(5, 18)
(5)
(5)
(5)
(5)
(5)
(14)
2.2 Operating Range
The operating ratings are the limits normally expected in the application and define the range of operation.
# Characteristic
Supply Voltage
16 Standard Operating Voltage, 3.3V
17 Standard Operating Voltage, 5.0V
Operating Ambient Temperature Range
18 Verified by 100% Final Test
20 Power-on Ramp Rate (VCC)
Symbol
VCC
TA
VCC_r
Min
VL
+3.135
TL
-40
0.000033
Typ
VTYP
+3.3
+5.0
⎯
⎯
Max
VH
+5.25
TH
+105
3300
Units
V
V
C
V/μs
(15)
(15)
(1)
(19)
Sensors
Freescale Semiconductor
MMA68xx
5
5 Page 
3 FUNCTIONAL DESCRIPTION
www.DataSheet4U.com
3.1 Customer Accessible Data Array
A customer accessible data array allows for each device to be customized. The array consists of an OTP factory programma-
ble block and read/write registers for device programmability and status. The OTP and writable register blocks incorporate inde-
pendent CRC circuitry for fault detection (reference Section 3.2). The writable register block includes a locking mechanism to
prevent unintended changes during normal operation. Portions of the array are reserved for factory-programmed trim values. The
customer accessible data is shown in Table 3.
Table 3. Customer Accessible Data
Location
Addr Register
7
6
$00 SN0
SN[7]
SN[6]
$01 SN1
SN[15]
SN[14]
$02 SN2
SN[23]
SN[22]
$03 SN3
SN[31]
SN[30]
$04 Reserved
Reserved
Reserved
$05 Reserved
Reserved
Reserved
$06 FCTCFG_X
STMAG_X
0
$07 FCTCFG_Y
STMAG_Y
0
$08 PN
PN[7]
PN[6]
$09
$0A DEVCTL
RES_1
RES_0
$0B DEVCFG
Reserved
Reserved
$0C DEVCFG_X
ST_X
Reserved
$0D DEVCFG_Y
ST_Y
Reserved
$0E ARMCFGX
Reserved
Reserved
$0F ARMCFGY
Reserved
Reserved
$10 ARMT_XP
AT_XP[7]
AT_XP[6]
$11 ARMT_YP
AT_YP[7]
AT_YP[6]
$12 ARMT_XN
AT_XN[7]
AT_XN[6]
$13 ARMT_YN
AT_YN[7]
AT_YN[6]
$14 DEVSTAT
UNUSED
IDE
$15 COUNT
COUNT[7]
COUNT[6]
$16 OFFCORR_X OFFCORR_X[7] OFFCORR_X[6]
$17 OFF_CORR_Y OFFCORR_Y[7] OFFCORR_Y[6]
$1C Reserved
Reserved
Reserved
$1D Reserved
Reserved
Reserved
Type Codes:
F: Factory programmed OTP location
R/W: Read/Write register
R: Read-only register
N/A: Not applicable
Bit Function
543
SN[5]
SN[4]
SN[3]
SN[13]
SN[12]
SN[11]
SN[21]
SN[20]
SN[19]
SN[29]
SN[28]
SN[27]
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
000
000
PN[5]
PN[4]
PN[3]
Invalid Address: “Invalid Register Request”
Reserved
Reserved
Reserved
ENDINIT SD OFMON
Reserved
Reserved
LPF_X[3]
Reserved
Reserved
LPF_Y[3]
APS_X[1]
APS_X[0]
AWS_XN[1]
APS_Y[1]
APS_Y[0]
AWS_YN[1]
AT_XP[5]
AT_XP[4]
AT_XP[3]
AT_YP[5]
AT_YP[4]
AT_YP[3]
AT_XN[5]
AT_XN[4]
AT_XN[3]
AT_YN[5]
AT_YN[4]
AT_YN[3]
SDOV
DEVINIT
MISOERR
COUNT[5]
COUNT[4]
COUNT[3]
OFFCORR_X[5] OFFCORR_X[4] OFFCORR_X[3]
OFFCORR_Y[5] OFFCORR_Y[4] OFFCORR_Y[3]
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
2
SN[2]
SN[10]
SN[18]
SN[26]
Reserved
Reserved
0
0
PN[2]
Reserved
A_CFG[2]
LPF_X[2]
LPF_Y[2]
AWS_XN[0]
AWS_YN[0]
AT_XP[2]
AT_YP[2]
AT_XN[2]
AT_YN[2]
OFF_Y
COUNT[2]
OFFCORR_X[2]
OFFCORR_Y[2]
Reserved
Reserved
1
SN[1]
SN[9]
SN[17]
SN[25]
Reserved
Reserved
0
0
PN[1]
Reserved
A_CFG[1]
LPF_X[1]
LPF_Y[1]
AWS_XP[1]
AWS_YP[1]
AT_XP[1]
AT_YP[1]
AT_XN[1]
AT_YN[1]
OFF_X
COUNT[1]
OFFCORR_X[1]
OFFCORR_Y[1]
Reserved
Reserved
0
SN[0]
SN[8]
SN[16]
SN[24]
Reserved
Reserved
1
1
PN[0]
Reserved
A_CFG[0]
LPF_X[0]
LPF_Y[0]
AWS_XP[0]
AWS_YP[0]
AT_XP[0]
AT_YP[0]
AT_XN[0]
AT_YN[0]
DEVRES
COUNT[0]
OFFCORR_X[0]
OFFCORR_Y[0]
Reserved
Reserved
Type
F
R/W
R
Sensors
Freescale Semiconductor
MMA68xx
11
11 Page | ||
| Páginas | Total 55 Páginas | |
| PDF Descargar | [ Datasheet MMA6823QR2.PDF ] | |
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