MMA8451Q datasheet(7/52 Pages) FREESCALE

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MMA8451Q

Sensors

Freescale Semiconductor, Inc.

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

Interface Supply Voltage

VDDIO(1)

1.62

1.8

3.6

Low Power Mode

ODR = 1.56 Hz

IddLP

μA

ODR = 6.25 Hz

ODR = 12.5 Hz

ODR = 50 Hz

ODR = 100 Hz

ODR = 200 Hz

ODR = 400 Hz

ODR = 800 Hz

165

Normal Mode

ODR = 1.56 Hz

Idd

μA

ODR = 6.25 Hz

ODR = 12.5 Hz

ODR = 50 Hz

ODR = 100 Hz

ODR = 200 Hz

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

100

470

STANDBY Mode Current @25°C

VDD = 2.5V, VDDIO = 1.8V

STANDBY Mode

IddStby

1.8

μA

Digital High Level Input Voltage

SCL, SDA, SA0

VIH

0.75*VDDIO

Digital Low Level Input Voltage

SCL, SDA, SA0

VIL

0.3*VDDIO

High Level Output Voltage

INT1, INT2

IO = 500 μA

VOH

0.9*VDDIO

Low Level Output Voltage

INT1, INT2

IO = 500 μA

VOL

0.1*VDDIO

Low Level Output Voltage

SDA

IO = 500 μA

VOLS

0.1*VDDIO

Power on Ramp Time

0.001

1000

Time from VDDIO on and VDD > Vmin until I2C

ready for operation

Cbyp = 100 nF

—

350

500

µs

Turn-on time (STANDBY to ACTIVE)

Ton

2/ODR + 1 ms

Turn-on time (Power Down to ACTIVE Mode)

Ton

2/ODR + 2 ms

Operating Temperature Range

Top

-40

+85

°C

MMA8451Q Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

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