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Si10xx-DK
10. Motherboard
The Si1000 and Si1010 Development Kit includes a motherboard that enables evaluation and preliminary software
development. Numerous input/output (I/O) connections are provided to facilitate prototyping using the target board.
Refer to Figure 8 for the locations of the various I/O connectors. Figure 10 on page 14 shows the factory default
shorting block positions.
P1
P2
P3
J1
J2, J3, J4
J5
J6
J7
J8
J9
J10, J11
J12
J13
J14
J15
J16
J17
J18,J19
J20
H1
H2
SW4
SW5
Expansion connector (96-pin)
Power connector (accepts input from 7 to 15 VDC unregulated power adapter)
USB connector (connects to PC for serial communication)
Enable/Disable VBAT Power LED
Port I/O headers (provide access to Port I/O pins)
Enable/Disable VDD/DC+ Power LED
Provides an easily accessible ground clip
Connects pin P0.7 (IREF0 Output) to resistor R14 and capacitor C19
Connects P0.2 and P0.3 to switches and P1.5 and P1.6 to LEDs
DEBUG connector for Debug Adapter interface
Selects the power supply source (Wall Power, AAA Battery, or Coin Cell)
Connects Port I/O to UART0 interface
Connects external VREF capacitor to the P0.0/VREF
Connects the PCB ground plane to P0.1/AGND
Connects negative potentiometer (R14) terminal to pin P1.4 or to GND
Connects the potentiometer (R14) wiper to P0.6/CNVSTR
Creates an open in the power supply path to allow supply current measurement
Connects signals on P1 to the appropriate GPIO. Short J18 for Si100x and J19 for Si101x.
Connects signals on J18/J19 to the EEPROM accessible through P4.
Analog I/O terminal block
Provides terminal block access to the input and output nodes of J17
Switches the device between One-Cell (0.9–1.8 V supply) or Two-Cell (1.8–3.6 V) mode
Turns power to the MCU on or off
R15
P1.6
P0.2
P0.3
J16
J15
J18
P4
SILICON LABS
www.silabs.com
J6
TOUCH SENSE SWITCH
P0.6
J4
P1.5
USB POWER P3
CP
2103
U3
J9
J19
J8
+1VD
J11
J12
J20
J3
J7
J13
J14
COIN_CELL
AAA_BAT
WALL_PWR
+3VD
VBAT
Pin 1
Pin 2
RESET
VDD/DC+
IMEASURE
J5
`
J2
J17
OFF
H2
VBAT
SW4
H1
ON
SW5
J1
P2
Pin 1
Figure 8. Si1000 Motherboard
12
Rev. 0.1
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