sca3100 BI Technologies, sca3100 Datasheet - Page 31

• Manufacturer Part Number: sca3100
• Description: Automotive Digital Accelerometer Platform
• Manufacturer: BI Technologies

6.4 Pin Description
6.5 Recommended circuit diagram
VTI Technologies Oy
www.vti.fi
1
2
3
4
5
6
7
8
9
10
11
12
No.
Figure 8: Component pinout
Table 12: Component pinout
Notes:
1) A=Analog, D=Digital, I=Input, O=Output, Z=Tristate Output
2) PU=internal pullup, PD=internal pulldown
3) PWM output in some SCA8X0 products, N.C.= Not Connected
Recommended circuit diagram for all product family components with SPI interface is shown in
Figure 9. Following design rules and recommendations should be considered to achieve maximum
performance:
1
2
3
4
5
6
Reserved
Reserved
AVSS
AVDD
CSB
MISO
SCK
MOSI
PWM
DVDD
DVSS
EGnd
Name
Required:
1
2
3
Recommended for improved PSRR (Note 1 in Figure 9):
4
5
AI
AI
DI
ZO
DI
DI
ADO
AI
AI
AI
Type
Connect (C4) 100 nF (ESR < 1) capacitor between AVDD and AVSS
Connect (C5) 100 nF (ESR < 1) capacitor between DVDD and DVSS
Use one power supply VDD for AVDD and DVDD (AVDD voltage level has to
be raised always same time or after DVDD during power up sequence)
Connect (C6) 10 µF capacitor between AVDD and AVSS
Connect serial resistance (R1) 10 Ω between VDD and AVDD/DVDD
1)
PD
PU
PD
PD
PD
PD/PU
2)
Doc. Nr. 82 694 00 C
12
11
10
9
8
7
Not used
Factory use
Positive power supply (analog)
Chip select
Data output
Serial clock
Data input
Pulse Width Modulation output
Positive power supply (digital)
Negative power supply (digital)
EMC ground
Negative power supply (analog)
Function
Gnd
Gnd
Gnd
Vdd
CSB
MISO
SCK
MOSI
N.C. or PWM
Vdd
Gnd
Gnd
Connect
SCA8X0/21X0/3100 Series
3)
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