EVAL-ADXL345Z-DB Analog Devices Inc, EVAL-ADXL345Z-DB Datasheet - Page 17

• Manufacturer Part Number: EVAL-ADXL345Z-DB
• Description: BOARD EVAL FOR ADXL345
• Manufacturer: Analog Devices Inc
• Series: iMEMS®r

Specifications of EVAL-ADXL345Z-DB

• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±2g, 4g, 8g, 16g
• Interface: I²C, SPI
• Sensitivity: 256LSB/g, 128LSB/g, 64LSB/g, 32LSB/g
• Voltage - Supply: 2 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: ADXL345
• Silicon Manufacturer: Analog Devices
• Application Sub Type: Accelerometer - Three-Axis
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Silicon Core Number: ADXL345
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 9. SPI Digital Input/Output
Parameter
Digital Input
Low Level Input Voltage (V
High Level Input Voltage (V
Low Level Input Current (I
High Level Input Current (I
Digital Output
Low Level Output Voltage (V
High Level Output Voltage (V
Low Level Output Current (I
High Level Output Current (I
Pin Capacitance
1
Table 10. SPI Timing (T
Parameter
f
t
t
t
t
t
t
t
t
t
t
t
t
1
2
3
4
SCLK
SCLK
DELAY
QUIET
DIS
CS,DIS
S
M
SETUP
HOLD
SDO
R
F
Limits based on characterization results, not production tested.
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, characterized with f
The timing values are measured corresponding to the input thresholds (V
Output rise and fall times measured with capacitive load of 150 pF.
4
4
Min
200
5
5
150
0.3 × t
0.3 × t
5
5
Limit
SCLK
SCLK
A
IL
IH
IL
)
= 25°C, V
IH
OL
)
)
OH
OL
2, 3
)
OH
)
)
)
)
Max
5
10
40
20
20
S
= 2.5 V,
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
VDD I/O
Description
SPI clock frequency
1/(SPI clock frequency) mark-space ratio for the SCLK input is 40/60 to 60/40
CS falling edge to SCLK falling edge
SCLK rising edge to CS rising edge
CS rising edge to SDO disabled
CS deassertion between SPI communications
SCLK low pulse width (space)
SCLK high pulse width (mark)
SDI valid before SCLK rising edge
SDI valid after SCLK rising edge
SCLK falling edge to SDO/SDIO output transition
SDO/SDIO output high to output low transition
SDO/SDIO output low to output high transition
SCLK
= 1.8 V)
= 5 MHz and bus load capacitance of 100 pF; not production tested.
Test Conditions
V
V
I
I
V
V
f
OL
OH
IN
IN
IN
OL
OH
= 1 MHz, V
= 10 mA
= −4 mA
= V
= 0 V
= V
= V
Rev. B | Page 17 of 40
DD I/O
OL, max
OH, min
IL
1
and V
IN
IH
) given in Table 9.
= 2.5 V
Min
0.7 × V
−0.1
0.8 × V
10
DD I/O
DD I/O
Limit
Max
0.3 × V
0.1
0.2 × V
−4
8
1
DD I/O
DD I/O
ADXL345
Unit
V
V
μA
μA
V
V
mA
mA
pF