SCA3000 Series
7
Application information
7.1 Pin Description
SCA3000 pin numbers are presented in Figure 14 below and pin descriptions in Table 22.
Figure 13. SCA3000 sensing directions.
Figure 14. SCA3000 pin numbers.
Table 22. SCA3000 pin descriptions.
SCA3000-D01, SCA3000-E01,
SCA3000-D02, SCA3000-E02,
SCA3000-D03 (in I2C usage),
SCA3000-L01 (in I2C usage)
SCA3000-E04,
Pin # Name
SCA3000-D03 (in SPI usage),
SCA3000-L01 (in SPI usage)
Not connected
1
2
NC
Not connected
XRESET
INT
External reset, active low
Interrupt output
Connect to ground
Digital ground
External reset, active low
Interrupt output
Connect to ground
Digital ground
3
4
CLK
5
DVSS
DVDD
DVIO
CSB
6
Digital supply
Digital supply
7
8
Digital I/O supply
Chip select
Digital I/O supply
Not connected
9
NC
Not connected
Not connected
10
11
12
13
14
15
16
17
18
NC
Not connected
Not connected
SCK_SCL
MISO_SDA
MOSI
AVDD
AVSS
AVSS
ATSTIO
NC
SPI serial clock (SCK)
SPI data out (MISO)
SPI data in (MOSI)
Analog supply
I2C serial clock (SCL)
I2C data in / out (SDA)
Not connected
Analog supply
Analog ground
Analog ground
Analog ground
Not connected
Not connected
Analog ground
Not connected
Not connected
7.2 Recommended circuit diagram
1. Connect 100 nF SMD capacitor between each supply voltage and ground level.
2. Connect 1 µF capacitor between each supply voltage and ground level.
3. Use one regulator for analog and digital supply (AVDD and DVDD).
4. Use separate regulator for digital IO supply (DVIO).
5. Xreset is needed always in start up: when Xreset is low, raise power supplies inside
specification, then set Xreset high.
6. INT-pin is used with output buffer as well as in Free Fall and Motion Detection mode.
7. Serial interface (SPI or I2C) logical '1' level is determined by DVIO supply voltage level.
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PRELIMINARY - Subject to changes
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Rev.A.06
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