ADXL375 datasheet(17/32 Pages) AD

17 / 32 page

Data Sheet

ADXL375

Rev. 0 | Page 17 of 32

Table 11. SPI Digital Input/Output Specifications

Limit1

Parameter

Test Conditions/Comments

Min

Max

Unit

DIGITAL INPUT

Low Level Input Voltage (VIL)

0.3 × VDD I/O

High Level Input Voltage (VIH)

0.7 × VDD I/O

Low Level Input Current (IIL)

VS = VDD I/O

0.1

µA

High Level Input Current (IIH)

VS = 0 V

−0.1

µA

DIGITAL OUTPUT

Low Level Output Voltage (VOL)

IOL = 10 mA

0.2 × VDD I/O

High Level Output Voltage (VOH)

IOH = −4 mA

0.8 × VDD I/O

Low Level Output Current (IOL)

VOL = VOL, MAX

High Level Output Current (IOH)

VOH = VOH, MIN

−4

PIN CAPACITANCE

fIN = 1 MHz, VS = 2.5 V

Limits based on characterization results; not production tested.

Table 12. SPI Timing (TA = 25°C, VS = 2.5 V, VDDI/O = 1.8 V)1

Limit2, 3

Parameter

Min

Max

Unit

Description

fSCLK

MHz

SPI clock frequency

tSCLK

200

Mark-space ratio (1/(SPI clock frequency)) for the SCLK input is 40/60 to 60/40

tDELAY

CS falling edge to SCLK falling edge

tQUIET

SCLK rising edge to CS rising edge

tDIS

CS rising edge to SDO/SDIO disabled

tCS, DIS

150

CS deassertion between SPI communications

0.3 × tSCLK

SCLK low pulse width (space)

0.3 × tSCLK

SCLK high pulse width (mark)

tSETUP

SDI/SDIO valid before SCLK rising edge

tHOLD

SDI/SDIO valid after SCLK rising edge

tSDO

SCLK falling edge to SDO/SDIO output transition

tR4

SDO/SDIO output high to output low transition

tF4

SDO/SDIO output low to output high transition

The CS, SCLK, SDI, and SDO pins are not internally pulled up or down; they must be driven for proper operation.

Limits based on characterization results, with fSCLK = 5 MHz and bus load capacitance of 100 pF; not production tested.

The timing values are referred to the input thresholds (VIL and VIH) given in Table 11.

Output rise and fall times measured with capacitive load of 150 pF. tR and tF are not shown in Figure 25 to Figure 27.

ADXL375 Datasheet(PDF) 17 Page - Analog Devices

ADXL375 Datasheet(HTML) 17 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Datasheet Download

Link URL