Arduino Board Gpio Headers; Table 8.3. Arduino J2 Pin Connections; Table 8.4. Arduino J3 Pin Connections; Table 8.5. Arduino J4 Pin Connections - Lattice Semiconductor MachXO5-NX User Manual

8.2. Arduino Board GPIO Headers

The board provides four headers, J2, J3, J4, and J5, for Arduino Zero board adaption.

Table 8.3. Arduino J2 Pin Connections

J2 Pin
Net Name
Number
1 AR_IO8
2 AR_IO9
3 AR_SS_IO10
4 AR_MOSI_IO11
5 AR_MISO_IO12
6 AR_SCK_IO13
7 GND
8 AR_AREF
9 AR_SDA
10 AR_SCL

Table 8.4. Arduino J3 Pin Connections

J3 Pin Number Net Name
1 AR_IO0
2 AR_IO1
3 AR_IO2
4 AR_IO3
5 AR_IO4
6 AR_IO5
7 AR_IO6
8 AR_IO7

Table 8.5. Arduino J4 Pin Connections

J4 Pin Number Net Name
1 AR_IO14
2 NC
3 AR_RESET
4 +3.3V_AR
5 AR_5V
6 GND
7 GND
8 +12V
Note:
If JP6 is installed, 5 V power can be supplied from either the Arduino board or the MachXO5-NX Development Board. With JP6
removed, both boards need their own 5 V power.
© 2022 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal.
All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
FPGA-EB-02052-0.90
Arduino ZERO Board MachXO5-25 Ball
Signal
~D8/PA06
~D9/PA07
~D10/PA18/SS
~D11/PA16/COPI
~D12/PA19/CIPO
~D13/PA17/SCK
GND
AREF/PA03
D20/PA22/SDA
D21/PA23/SCL
Arduino ZERO Board Signal
D0/RX/PA11
D1//TX/PA10
D2/PA14
~D3/PA09
~D4/PA08
~D5/PA15
~D6/PA20
D7/PA21
Arduino ZERO MachXO5-25 Ball
Board Signal
ATN
IOREF
RESET
+3V3
+5V
GND
GND
VIN
Preliminary Evaluation Board User Guide
Comments
Location
L12 —
L13 —
L14 Defaults to SS function on Arduino ZERO Board.
Defaults to COPI function on Arduino ZERO
L15
Board.
Defaults to CIPO function on Arduino ZERO
L16
Board.
Defaults to SCK function on Arduino ZERO
K19
Board.
— —
L19 AR_AREF connection to AREF through R43.
Defaults to SDA function on Arduino ZERO
N18 Board. It is optionally connected to SDA0
through R44 (DNI).
Defaults to SCL function on Arduino ZERO Board.
N19 It is optionally connected to SCL0 through R45
(DNI).
MachXO5-25 Ball Location
J19
J20
K12
K13
K14
K15
K16
K17
Comments
Location
L20 —
— —
Pin U20 should be set high by default. Avoid
K20 Arduino ZERO board in Reset status when
connected.
— 3.3 V power supply from Arduino ZERO board.
— Jump to 5 V onboard power rail through JP6.
— —
— —
— Share with +12V onboard power rail.
MachXO5-NX Development Board
Comments
—
—
—
—
—
—
—
—
23