Shimmer 3 - 9. Appendices; 9.1. Appendix A - Mainboard detail for Debug and Testing

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Realtime Technologies Ltd Shimmer User Manual
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9. Appendices
9.1. Appendix A - Mainboard detail for Debug and Testing
9.1.1. Important Components
These following components may be removed or replaced to support specific user applications,
configure the board or perform power-measurement testing. Figure 9-1 and Figure 9-2 provide
illustrations of the Shimmer3 mainboard layout with each component labelled appropriately. For
more information, contact Shimmer support.
J1 Negative battery terminal
J2 Positive battery terminal
F1 Battery discharge limit PTC (MF-FSMF050X-2)
SW2 On/Off switch
U9 Primary Regulator (3.0V LDO)
EU5 Battery charger
R37 Battery charger RSET
D5 Battery Isolation Diode (SBR130S3)
R46 Battery voltage divider resistor (top)
R47 Battery voltage divider resistor (bottom)
U1 Battery voltage divider buffer
X1 32.768k crystal
X3 XT2 clock source, 8MHz resonator
U8 CPU (MSP430F5437AIPN)
U2 Bluetooth soft power switch
U3 microSD power switch
U4 FFC / Radio Peripheral power switch
U5 TCXO power switch
EU1 RN-42 Bluetooth Radio Module
R20 Zero-ohm microSD power jumper (use for power measurements)
R21 Zero-ohm Radio power jumper (use for power measurements)
R23 Zero-ohm FFC / Radio peripheral power jumper (use for power measurements)
R41 22.1 ohm TCXO power jumper (use for power measurements and filtering)
R26 22.1 ohm MPU power jumper (use for power measurements and filtering)
R24 22.1 ohm low-noise accel. power jumper (use for power measurements and filtering)
U20 3-Axis low-noise accelerometer (KXRB5-2042)
U21 6 Axis Motion Processor (MPU-9150)
U22 3-Axis magnetic sensor (LSM303DLHC)
U7 Digital Pressure/Temp Sensor (BMP180)
C44 .033uF Accelerometer x-filter
C26 .033uF Accelerometer y-filter
C29 .033uF Accelerometer z-filter
J6 Internal Expansion (BM10NB(0.6)-20DS-0.4V(51))
J7 Internal Expansion (BM10B(0.6)-20DP-0.4V(51))
J5 External Expansion (ST80-18P)
J8 FFC / Radio Peripheral Expansion (XF2L-1025-1A)
J4 microSD socket
U12 Debug Mode Mux (ADG784A)
U14,U15 microSD Isolation MUX (ADG742BKSZ)
U6 Debug Mode detector (MIC845HBC5)
SW1 User button
D1 Green LED
D2 Yellow LED
D3 Red LED
D6 Green LED
D9 Blue LED