User's Manual

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MODULE SPECIFICATIONS
Power requirements
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Power requirements
ConnectCore 9C  Module: 3.3VDC @ 0.75A max
 USB interface: 5VDC @ 0.5A max per port (optional)
ConnectCore
Wi-9C
 Module: 3.3V ± 5% @ 0.95A max, 0.70A typ
 Optional USB: 5V ± 10% @ 1.0A max
Power up The rise time of both the 3.3V power supply and 5V power supply must be between
700 μs and 140 ms, and the inrush current must be limited to less than 2A.
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Real-time clock
The accuracy of the internal Real-Time Clock on the module’s processor is .15%.
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I
2
C signals
The I
2
C signals are multiplexed with GPIO.
Legend
 SO-DIMM pin #: Pin number assignment for signal
 Signal: Pin name for each signal.
 U/D: Indicates whether the pin has an internal pullup resistor or pulldown resistor.
• U — Pullup
• D— Pulldown
• Blank — Neither an internal pullup or pulldown resistor
 OD (mA): The output drive of an output buffer.
 I/O: Type of signal input (I), output (O), or input/output (I/O)
Signals
SO-DIMM
Pin#
Signal name GPIO U/D OD
(mA)
I/O Description
55 iic_scl GPIO[34] U 4 I/O I
2
C serial clock line.
Duplicate on GPIO[70]
66 iic_sda GPIO[35] U 4 I/O I
2
C serial data line.
Duplicate on GPIO[71]