LIS3DSH datasheet(14/53 Pages) STMICROELECTRONICS

部件名	LIS3DSH

功能描述	MEMS digital output motion sensor ultra low-power high performance three-axis ?쐍ano??accelerometer

PDF	53 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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14 / 53 page

Mechanical and electrical specifications

LIS3DSH

14/53

Doc ID 022405 Rev 1

3.3

Communication interface characteristics

3.3.1

SPI - serial peripheral interface

Subject to general operating conditions for Vdd and Top.

Figure 3.

SPI slave timing diagram (c)

When no communication is on-going, data on SDO is driven by internal pull-up resistor.

Table 5.

SPI slave timing values

Symbol

Parameter

Value (1)

Unit

Min.

Max.

tc(SPC)

SPI clock cycle

100

fc(SPC)

SPI clock frequency

MHz

tsu(CS)

CS setup time

th(CS)

CS hold time

tsu(SI)

SDI input setup time

th(SI)

SDI input hold time

tv(SO)

SDO valid output time

th(SO)

SDO output hold time

tdis(SO)

SDO output disable time

Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not

tested in production.

Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both input and output ports.

SPC

SDI

SDO

tsu(CS)

tv(SO)

th(SO)

th(SI)

tsu(SI)

th(CS)

tdis(SO)

tc(SPC)

MSB IN

MSB OUT

LSB OUT

LSB IN

(2)

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