MMA6525KW datasheet(45/56 Pages) FREESCALE

Part #	MMA6525KW

Description	Dual-Axis SPI Inertial Sensor

PDF	56 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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45 / 56 page

Sensor

Freescale Semiconductor, Inc.

MMA65xx

SPI Communications

Communication with the device is completed through synchronous serial transfers via SPI. The device is a slave device con-

figured for CPOL = 0, CPHA = 0, MSB first. SPI transfers are completed through a sequence of two phases. During the first

phase, the type of transfer and associated control information is transmitted from the SPI master to the device. Data from the

device is transmitted during the second phase. Any activity on MOSI or SCLK is ignored when CS is negated. Consequently,

intermediate transfers involving other SPI devices may occur between phase one and phase two. Reference Figure 36.

Figure 36. SPI Transfer Detail

T3P1

SCLK

MOSI

MISO

T1P1

T2P1

T1P2

T2P2

T3P2

SCLK

MOSI

MISO

Phase One: Command

Phase Two: Response

Phase One: Response -Previous Command

MMA6525KW Datasheet(PDF) 45 Page - Freescale Semiconductor, Inc