STEVAL-MKI024V1 STMicroelectronics, STEVAL-MKI024V1 Datasheet - Page 12

• Manufacturer Part Number: STEVAL-MKI024V1
• Description: DEMO BOARD BASED ON LIS331DL
• Manufacturer: STMicroelectronics
• Series: MEMSr

Specifications of STEVAL-MKI024V1

• Design Resources: STEVAL-MKI024V1 Gerber Files STEVAL-MKI024V1 Schematics STEVAL-MKI024V1 Bill of Materials
• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±2.3g, 9.2g
• Interface: SPI, USB
• Sensitivity: 72mg/digit
• Voltage - Supply: 5V, USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: LIS331DL
• Acceleration: 2 g, 8 g
• Sensing Axis: Triple Axis
• Output Type: Digital
• Interface Type: USB
• Silicon Manufacturer: ST Micro
• Silicon Core Number: LIS331DL
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Application Sub Type: Accelerometer
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8719

Mechanical and electrical specifications
2.3
2.3.1
2. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both Input and Output port
3. When no communication is on-going, data on CS, SPC, SDI and SDO are driven by internal pull-up resistors
12/42
1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not
SDO
CS
SPC
SDI
tested in production
Symbol
tdis(SO)
tc(SPC)
fc(SPC)
tsu(CS)
th(CS)
tsu(SI)
tv(SO)
th(SO)
th(SI)
(3)
(3)
(3)
(3)
Communication interface characteristics
SPI - serial peripheral interface
Subject to general operating conditions for Vdd and top.
Table 5.
Figure 3.
t
su(CS)
SPI clock cycle
SPI clock frequency
CS setup time
CS hold time
SDI input setup time
SDI input hold time
SDO valid output time
SDO output hold time
SDO output disable time
SPI slave timing values
SPI slave timing diagram
t
su(SI)
MSB IN
MSB OUT
t
h(SI)
Parameter
t
v(SO)
t
c(SPC)
(2)
t
h(SO)
Min
100
15
5
8
5
6
Value
(1)
Max
10
50
50
LSB IN
LSB OUT
t
h(CS)
LIS331DL
t
dis(SO)
MHz
Unit
ns
ns
(3)
(3)
(3)
(3)