AIS326DQ datasheet(13/49 Pages) STMICROELECTRONICS

부품명	AIS326DQ

상세설명	MEMS inertial sensor 3-axis, low g accelerometer with digital output

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13 / 49 page

AIS326DQ

Mechanical and electrical specifications

13/49

2.3

Communication interface characteristics

2.3.1

SPI - serial peripheral interface

Subject to general operating conditions for Vdd and TOP.

Figure 3.

SPI slave timing diagram (2)

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

When no communication is on-going, data on CS, SPC, SDI and SDO are driven by internal pull-up

resistors

Table 5.

SPI slave timing values

Symbol

Parameter

Value(1)

Values are guaranteed at 8 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization

results, not tested in production

Unit

Min

Max

tc(SPC)

SPI clock cycle

125

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

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

(3)

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