SCA3100-D04 VTI Technologies, SCA3100-D04 Datasheet - Page 30

• Manufacturer Part Number: SCA3100-D04
• Description: ACCELEROMETER 3-AXIS +/-2G SPI
• Manufacturer: VTI Technologies

Specifications of SCA3100-D04

• Axis: X, Y, Z
• Acceleration Range: ±2g
• Sensitivity: 900 counts/g
• Voltage - Supply: 3 V ~ 3.6 V
• Output Type: Digital
• Bandwidth: 55Hz
• Interface: SPI
• Mounting Type: Surface Mount
• Package / Case: 12-SMD
• For Use With: 551-1061 - EVAL BOARD ACCELEROMETER 3-AXIS551-1056 - KIT DEMO ACCELEROMETER SCA3100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 551-1055-2

5.3.3 SPI AC characteristics
VTI Technologies Oy
www.vti.fi
The AC characteristics of the SCA3000 SPI interface are defined in Figure 11 and in Table 17.
Figure 11. Timing diagram for SPI communication.
Table 17. AC characteristics of SPI communication.
Terminal CSB, SCK
Terminal SCK
Terminal MOSI, SCK
Terminal MISO, CSB
Terminal MISO, SCK
10
CSB
SCK
MOSI
MISO
1
2
3
4
5
6
7
8
9
Time from CSB (90%)
Parameter
Time from CSB (10%)
to SCK (90%)1
Time from SCK (10%)
to CSB (90%)1
SCK low time
SCK high time
SCK Frequency
Time from changing
MOSI (10%, 90%) to
SCK (90%)1. Data
setup time
Time from SCK (90%)
to changing MOSI
(10%, 90%)1. Data
hold time
Time from CSB (10%)
to stable MISO (10%,
90%)
to high impedance
state of MISO1.
Time from SCK (10%)
to stable MISO (10%,
90%)1.
T
VAL1
T
LS1
MSB in
MSB out
T
T
Doc.Nr. 8257300A.07
CH
HOL
T
VAL2
T
Load
capacitance at
MISO < 35 pF
Load
capacitance at
MISO < 35 pF
Load
capacitance at
MISO < 35 pF
Load
capacitance at
MISO < 35 pF
Load
capacitance at
MISO < 35 pF
CL
Conditions
DATA in
DATA out
Symbol
fsck =
1/T
T
T
T
T
T
T
T
T
T
T
VAL1
VAL2
HOL
SET
LS1
LS2
SET
CH
CL
LZ
per
LSB in
LSB out
T
T
0.80*
T
0.80*
T
T
T
Min
per
per
per
per
per
per
/2
/2
/2
/2
/4
/4
T
LS2
T
T
Typ
per
per
/2
/2
T
LZ
T
LH
1.3· T
Product
specific
T
T
Max
per
per
/4
/4
per
SCA3000 Series
/4
MHz
Unit
Rev.A.07
ns
ns
ns
ns
ns
ns
ns
ns
ns
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