Data Sheet

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)
1.62 1.8 3.6 V
Low-Power Mode
ODR = 1.56 Hz
I
dd
LP
6
μA
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
μA
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
1mA
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 μA
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 μA VOH 0.9*VDDIO
V
Low-Level Output Voltage
INT1, INT2 I
O
= 500 μA VOL 0.1*VDDIO
V
Low-Level Output Voltage
SDA I
O
= 500 μA 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