Freescale Semiconductor Accelerometer Cube Demo MMA9559LKUBE MMA9559LKUBE 데이터 시트

Sensors
Freescale Semiconductor, Inc.

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The MMA955xL device consists of a 3-axis, MEMS accelerometer and a mixed-signal ASIC with an integrated, 32-bit CPU. The 
mixed-signal ASIC can be utilized to measure and condition the outputs of the MEMS accelerometer, internal temperature sensor, 
or a differential analog signal from an external device.

The calibrated, measured sensor outputs can be read via the slave I

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C or SPI port or utilized internally within the MMA955xL 

platform.

 

A block level view is shown in the preceding figure and can be summarized at a high level as an analog/mixed-mode subsystem 
associated with a digital engine:

• The analog subsystem is composed of:

– A 3-axis transducer that is an entirely passive block including the MEMS structures.

– An Analog Front End (AFE) with the following:

• A capacitance-to-voltage converter (CVC)
• An analog-to-digital converter
• A temperature sensor

• The digital subsystem is composed of:

– A 32-bit, ColdFire V1 CPU with a Background-Debug Module (BDM)

– Memory: RAM, ROM, and flash

– Rapid GPIO (RGPIO) port-control logic

– Timer functions include:

• Modulo timer module (MTIM16)
• Programmable Delay Timer (PDB)

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