MMA8452Q
Sensors
Freescale Semiconductor, Inc.
7
2.2
Electrical Characteristics
Table 3. Electrical Characteristics @ VDD = 2.5V, VDDIO = 1.8V, T = 25°C unless otherwise noted
.
Parameter
Test Conditions
Symbol
Min
Typ
Max
Unit
Supply Voltage
VDD
(1)
1. There is no requirement for power supply sequencing. The VDDIO input voltage can be higher than the VDD input voltage.
1.95
2.5
3.6
V
Interface Supply Voltage
VDDIO
1.62
1.8
3.6
V
Low-Power Mode
ODR = 1.56 Hz
I
dd
LP
6
μ
A
ODR = 6.25 Hz
6
ODR = 12.5 Hz
6
ODR = 50 Hz
14
ODR = 100 Hz
24
ODR = 200 Hz
44
ODR = 400 Hz
85
ODR = 800 Hz
165
Normal Mode
ODR = 1.56 Hz
I
dd
24
μ
A
ODR = 6.25 Hz
24
ODR = 12.5 Hz
24
ODR = 50 Hz
24
ODR = 100 Hz
44
ODR = 200 Hz
85
ODR = 400 Hz
165
ODR = 800 Hz
165
Current during Boot Sequence, 0.5 mSec max
duration using recommended Bypass Cap
VDD = 2.5V
Idd Boot
1
mA
Value of Capacitor on BYP Pin
-40°C 85°C
Cap
75
100
470
nF
STANDBY Mode Current @ 25°C
VDD = 2.5V, VDDIO = 1.8V
STANDBY Mode
I
dd
Stby
1.8
5
μ
A
Digital High Level Input Voltage
SCL, SDA, SA0
VIH
0.7*VDDIO
V
Digital Low-Level Input Voltage
SCL, SDA, SA0
VIL
0.3*VDDIO
V
High Level Output Voltage
INT1, INT2
I
O
= 500
μ
A
VOH
0.9*VDDIO
V
Low-Level Output Voltage
INT1, INT2
I
O
= 500
μ
A
VOL
0.1*VDDIO
V
Low-Level Output Voltage
SDA
I
O
= 500
μ
A
VOLS
0.1*VDDIO
V
Power on Ramp Time
0.001
1000
ms
Boot time
Time from VDDIO on and
VDD > VDD min until I
2
C is ready
for operation, Cbyp = 100 nF
Tbt
350
500
µs
Turn-on time
(2)
2. Note the first sample is typically not very precise. Depending on ODR/MODS setting, a minimum of three samples is recommended for full
precision.
Time to obtain valid data from
STANDBY mode to ACTIVE mode.
Ton1
2/ODR + 1 ms
s
Turn-on time
Time to obtain valid data from valid
voltage applied.
Ton2
2/ODR + 2 ms
Operating Temperature Range
Top
-40
+85
°C
