2.2 Electrical Characteristics
Table 3. Electrical Characteristics @ VDD = 2.5 V, VDDIO = 1.8 V, T = 25°C unless otherwise noted.
Parameter
Supply Voltage
Interface Supply Voltage
Test Conditions
Symbol
Min
Typ
VDD(1)
1.95
2.5
VDDIO(1)
1.62
1.8
ODR = 1.56 Hz
6
ODR = 6.25 Hz
6
ODR = 12.5 Hz
6
Low Power Mode
ODR = 50 Hz
14
ODR = 100 Hz
IddLP
24
ODR = 200 Hz
44
ODR = 400 Hz
85
ODR = 800 Hz
165
ODR = 1.56 Hz
24
ODR = 6.25 Hz
24
ODR = 12.5 Hz
24
Normal Mode
ODR = 50 Hz
24
ODR = 100 Hz
Idd
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 = 2.5 V
Idd Boot
Value of Capacitor on BYP Pin
-40°C 85°C
Cap
75
100
VDD = 2.5 V, VDDIO = 1.8 V
STANDBY Mode Current @25°C
STANDBY Mode
IddStby
1.8
Digital High Level Input Voltage
SCL, SDA, SA0
VIH
0.75*VDDIO
Digital Low Level Input Voltage
SCL, SDA, SA0
VIL
High Level Output Voltage
INT1, INT2
Low Level Output Voltage
INT1, INT2
Low Level Output Voltage
SDA
IO = 500 μA
IO = 500 μA
IO = 500 μA
VOH
0.9*VDDIO
VOL
VOLS
Power on Ramp Time
0.001
Time from VDDIO on and VDD > Vmin until I2C
ready for operation
Cbyp = 100 nF
BT
—
350
Max
Unit
3.6
V
3.6
V
μA
μA
1
μA
470
nF
5
μA
V
V
0.3*VDDIO
V
V
0.1*VDDIO
V
0.1*VDDIO
1000
ms
500
µs
Turn-on time (STANDBY to ACTIVE)
Ton
2/ODR + 1 ms
s
Turn-on time (Power Down to ACTIVE Mode)
Ton
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.
MMA8451Q
10
Sensors
Freescale Semiconductor