Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트

Sensors
Freescale Semiconductor, Inc.

13

Unit is powered down and has no operating functionality. V

DD

 and V

DDIO

 are not powered.

The digital sections are operational and the unit is capable of receiving commands and delivering stored data. The analog 

sections are off. The part is waiting for CTRL_REG1 to be configured and the part to enter active mode.

Both analog and digital sections are running. The unit is capable of gathering new data, and accepting commands.   

MPL3115A2 is fully functional.

 

The device is a low-power, high accuracy digital output altimeter, barometer and thermometer, packaged in a 3 x 5 x 1.1 mm 

form factor. The complete device includes a sensing element, analog and digital signal processing and an I

2

C interface.

The device has two operational modes, barometer and altimeter. Both modes include a thermometer temperature output func-

tion.

Power consumption and sensitivity are programmable where the data oversampling ratio can be set to balance current con-

sumption and noise/resolution. Serial Interface Communications is through an I

2

C interface thus making the device particularly 

suitable for direct interfacing with a microcontroller. The device features two independently programmable interrupt signals INT1 
and INT2. These can be set to generate an interrupt signal when a new set of Pressure/Altitude and Temperature data is avail-
able, thereby simplifying data acquisition for the host controller. These interrupt pins can also be configured to generate interrupts 
when a user programmed set of conditions are met (see 

). Examples are: Interrupt can be trig-

gered when a single new data acquisition is ready, when a desired number of samples are stored within the internal FIFO or when 
a change of Pressure/Altitude or Temperature is detected. 

In RAW mode, the FIFO must be disabled and all other functionality: Alarms, Deltas and other interrupts are disabled. 

OFF

Powered Down

< 1.62 V

< VDD + 0.3 V

Device is powered off.

STANDBY I

2

C Communication with device is possible

ON

SBYB bit of CTRL_REG1 is 

cleared

Only POR and digital blocks are enabled. 
Analog subsystem is disabled.

ACTIVE

I

2

C Communication with device is possible

ON

SBYB bit of CTRL_REG1 is 

set

All blocks are enabled (POR, digital, analog).

SLEEP

WAKE

STANDBY

OFF

ACTIVE