2.2
Electrical Characteristics
Table 3. Electrical Characteristics @ VDD = 2.5V, VDDIO = 1.8V, T = 25°C unless otherwise noted .
Parameter
Supply Voltage
Interface Supply Voltage
Test Conditions
Symbol
VDD (1)
VDDIO (1)
Min
1.95
1.62
Typ
2.5
1.8
Max
3.6
3.6
Unit
V
V
ODR = 1.56 Hz
ODR = 6.25 Hz
ODR = 12.5 Hz
6
6
6
Low-Power Mode
ODR = 50 Hz
ODR = 100 Hz
I dd LP
14
24
μ A
ODR = 200 Hz
ODR = 400 Hz
ODR = 800 Hz
ODR = 1.56 Hz
ODR = 6.25 Hz
ODR = 12.5 Hz
44
85
165
24
24
24
Normal Mode
ODR = 50 Hz
ODR = 100 Hz
I dd
24
44
μ A
ODR = 200 Hz
ODR = 400 Hz
ODR = 800 Hz
85
165
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
STANDBY Mode Current @ 25°C
-40°C 85°C
VDD = 2.5V, VDDIO = 1.8V
STANDBY Mode
Cap
I dd Stby
75
100
1.8
470
5
nF
μ A
Digital High Level Input Voltage
SCL, SDA, SA0
Digital Low-Level Input Voltage
SCL, SDA, SA0
VIH
VIL
0.7*VDDIO
0.3*VDDIO
V
V
High Level Output Voltage
INT1, INT2
Low-Level Output Voltage
INT1, INT2
Low-Level Output Voltage
SDA
Power on Ramp Time
I O = 500 μ A
I O = 500 μ A
I O = 500 μ A
VOH
VOL
VOLS
0.9*VDDIO
0.001
0.1*VDDIO
0.1*VDDIO
1000
V
V
V
ms
Time from VDDIO on and
Boot time
VDD > VDD min until I 2 C is ready
Tbt
350
500
μs
for operation, Cbyp = 100 nF
Turn-on time (2)
Turn-on time
Time to obtain valid data from
STANDBY mode to ACTIVE mode.
Time to obtain valid data from valid
voltage applied.
Ton1
Ton2
2/ODR + 1 ms
2/ODR + 2 ms
s
Operating Temperature Range
Top
-40
+85
°C
1. There is no requirement for power supply sequencing. The VDDIO input voltage can be higher than the VDD input voltage.
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.
MMA8452Q
Sensors
Freescale Semiconductor, Inc.
7
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