MMA7455LT Freescale Semiconductor, MMA7455LT Datasheet - Page 7

• Manufacturer Part Number: MMA7455LT
• Description: Board Mount Accelerometers 3-AXIS DIGITAL 2 4 8G
• Manufacturer: Freescale Semiconductor

Specifications of MMA7455LT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.4 V
• Supply Current: 400 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Sensitivity: 64 LSB/g
• Package / Case: LGA-14
• Output Type: Digital
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Sensor Case Style: LGA
• No. Of Pins: 14
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Ic Interface Type: I2C, SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 3. Operating Characteristics
Unless otherwise noted: –40°C < T
1. It is recommended to tie the analog and digital supply voltages together.
Sensors
Freescale Semiconductor
Analog Supply Voltage
Digital I/O Pins Supply Voltage
Supply Current Drain
Operating Temperature Range
0g Output Signal (T
Sensitivity (T
Self-Test Output Response
Temperature Compensation for Offset
Temperature Sensitivity for Offset
Input High Voltage
Input Low Voltage
Internal Clock Frequency (T
SPI Frequency
Bandwidth for Data Measurement (User Selectable)
Output Data Rate
Control Timing
Nonlinearity (2 g range)
Cross Axis Sensitivity
Standby/Operation Mode
Enable Bus Mode
Standby/Operation Mode
Enable Bus Mode
Operation Mode
Pulse Detect Function Mode
Standby Mode (except data loading and I
Zout
DV
DV
DFBW 0
DFBW 1
Output Data Rate is 125 Hz when 62.5 bandwidth is selected.
Output Data rate is 250 Hz when 125 Hz bandwidth is selected.
Wait Time for I
Turn On Response Time (Standby to Normal Mode)
Turn Off Response Time (Normal to Standby Mode)
Self-Test Response Time
Sensing Element Resonant Frequency
±2g range (25°C) 8-bit
±4g range (25°C) 8-bit
±8g range (25°C) 8-bit
±8g range (25°C) 10-bit
±2g range (25°C) 8-bit
±4g range (25°C) 8-bit
±8g range (25°C) 8-bit
±8g range (25°C) 10-bit
XY
Z
DD_IO
DD_IO
< 2.4 V
> 2.4 V
A
=25°C, AV
2
C/SPI ready after power on
A
=25°C, AV
DD
= 2.8 V)
A
Characteristic
= 25°C, AV
GLVL[1:0]= 0 1
GLVL[1:0]= 1 0
GLVL[1:0]= 0 0
(1)
DD
= 2.8 V)
A
< 85°C, 2.4 V < AV
DD
2
C/SPI communication period)
= 2.8 V)
DD
< 3.6 V, Acceleration = 0g, Loaded output.
f
DV
DV
Symbol
GCELLXY
f
GCELLZ
AV
AV
ΔST
T
t
T
I
I
I
V
V
T
CLK
DD_IO
DD_IO
t
t
t
DD
DD
DD
t
CO
su
CS
ru
rd
st
IH
A
IL
DD
DD
Z
0.7 x DVDD
±0.026
14.5
±3.5
Min
140
2.4
2.4
-40
-18
-10
-18
58
29
58
32
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
-5
-1
-5
±0.01
±0.5
62.5
Typ
400
400
150
125
125
250
2.8
2.8
2.5
6.0
3.4
25
64
32
16
64
64
—
—
—
—
—
—
—
0
0
0
0
0
0
4
8
1
0.35 x DVDD
+0.026
Max
17.5
+3.5
490
490
160
3.6
3.6
10
85
18
10
18
70
35
70
83
20
20
20
+1
+5
—
—
—
—
—
—
—
—
—
—
5
MMA7455L
count/g
count/g
count/g
count/g
mg/°C
mg/°C
count
count
count
count
count
%FS
MHz
MHz
Unit
kHz
kHz
kHz
ms
ms
ms
ms
μA
μA
μA
°C
Hz
Hz
Hz
Hz
%
V
V
V
V
V
V
7