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FPGA · Development Board
Lattice MachXO3 Starter Kit
A starter board that exposes all six I/O banks of the MachXO3L (NVCM) or MachXO3LF (Flash) device through four 2x20 expansion headers (J3, J4, J6, J8). It carries an FT2232H for USB JTAG/UART, eight LEDs, an 8-position DIP switch, and a 12 MHz oscillator, and is supported by Lattice Diamond. The same board is sold as the MachXO3L and MachXO3LF Starter Kit.
Processor
Lattice LCMXO3L-6900C-5BG256C / LCMXO3LF-6900C-5BG256C (256-ball caBGA, 6,900 LUTs)
Logic
3.3 V VCCIO on all expansion banks
Power
USB mini-B (5 V); on-board regulators generate 3.3 V, 2.5 V, and 1.2 V
Format
~85 x 55 mm PCB with four 2x20 expansion headers plus 1x8 JTAG and 1x6 SPI/I2C headers
Check before wiring
- The connector map applies to the LCMXO3L-6900C-5BG256C / LCMXO3LF-6900C-5BG256C population documented in EB95.
- All expansion headers are 3.3 V; do not connect 5 V logic without level translation.
- J3 positions 3, 4, and 14 are shared with INITn, DONE, and JTAGENB and act as configuration straps at power-up.
- J8 exposes VCCIO5, VCCIO3, and VCCIO4 at positions 1, 2, and 40 — do not assume one voltage across the whole connector.
- Headers are unpopulated 100 mil landings; read connector orientation from the EB95 figures before soldering.
Interfaces
GPIOSPII2CUARTJTAGUSB
Source-backed connector
Interactive pin map
Pin map
Connector
J3, J4, J6, and J8 2x20 expansion header landings
Signals grouped by function — schematic layout, not to physical scale
Dense header — open Full view for a roomier, fully-labelled diagram.
Simplified diagram, grouped by function — not to physical scale. Pin data is source-backed; verify against the linked documentation.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- Physical positions, signal names, and 256-caBGA balls are transcribed from EB95 (MachXO3 Starter Kit User Guide) Tables 4-7.
- J3 positions 3, 4, and 14 are shared with INITn, DONE, and JTAGENB; treat them as configuration straps during boot and do not drive them externally at power-up.
- J8 spans Banks 3, 4, and 5 and exposes different VCCIO rails at positions 1, 2, and 40; do not assume one voltage for the whole connector.
- The headers are unpopulated 100 mil landings shared by the LCMXO3L (NVCM) and LCMXO3LF (Flash) board populations.
All 160 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| J3 - Bank 0 | ||||
| 1 | Power | VCCIO0(BALLSD5,D12,G8,G9) | ||
| 2 | Power | VCCIO0(BALLSD5,D12,G8,G9) | ||
| 3 | Alt | |||
| 4 | Alt | |||
| 5 | GPIO | |||
| 6 | GPIO | |||
| 7 | GPIO | |||
| 8 | GPIO | |||
| 9 | GPIO | |||
| 10 | GPIO | |||
| 11 | Ground | GND | ||
| 12 | Ground | GND | ||
| 13 | GPIO | |||
| 14 | Alt | |||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | Ground | GND | ||
| 22 | Ground | GND | ||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| 27 | GPIO | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | Ground | GND | ||
| 32 | Ground | GND | ||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | Ground | GND | ||
| 40 | GPIO | |||
| J4 - Bank 1 | ||||
| 1 | Power | VCCIO1(BALLSE13,H10,J10,M13) | ||
| 2 | Power | VCCIO1(BALLSE13,H10,J10,M13) | ||
| 3 | GPIO | |||
| 4 | GPIO | |||
| 5 | GPIO | |||
| 6 | GPIO | |||
| 7 | GPIO | |||
| 8 | GPIO | |||
| 9 | GPIO | |||
| 10 | GPIO | |||
| 11 | Ground | GND | ||
| 12 | Ground | GND | ||
| 13 | GPIO | |||
| 14 | GPIO | |||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | Ground | GND | ||
| 22 | Ground | GND | ||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| 27 | GPIO | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | Ground | GND | ||
| 32 | Ground | GND | ||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | GPIO | |||
| J6 - Bank 2 | ||||
| 1 | Power | VCCIO2(BALLSK8,K9,N5,N12) | ||
| 2 | Power | VCCIO2(BALLSK8,K9,N5,N12) | ||
| 3 | GPIO | |||
| 4 | GPIO | |||
| 5 | GPIO | |||
| 6 | GPIO | |||
| 7 | GPIO | |||
| 8 | GPIO | |||
| 9 | GPIO | |||
| 10 | GPIO | |||
| 11 | Ground | GND | ||
| 12 | Ground | GND | ||
| 13 | GPIO | |||
| 14 | GPIO | |||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | Ground | GND | ||
| 22 | Ground | GND | ||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| 27 | GPIO | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | Ground | GND | ||
| 32 | Ground | GND | ||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | GPIO | |||
| J8 - Banks 3/4/5 | ||||
| 1 | Power | VCCIO5(BALLE4) | ||
| 2 | Power | VCCIO3(BALLM4) | ||
| 3 | GPIO | |||
| 4 | GPIO | |||
| 5 | GPIO | |||
| 6 | GPIO | |||
| 7 | GPIO | |||
| 8 | GPIO | |||
| 9 | GPIO | |||
| 10 | GPIO | |||
| 11 | Ground | GND | ||
| 12 | Ground | GND | ||
| 13 | GPIO | |||
| 14 | GPIO | |||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | Ground | GND | ||
| 22 | Ground | GND | ||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| 27 | GPIO | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | Ground | GND | ||
| 32 | GPIO | |||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | Power | VCCIO4(BALLSH7,J7) | ||
Why it matters
- LCMXO3L/LF-6900: 6,900 LUTs and up to 206 user I/Os with instant-on Flash/NVCM configuration.
- Four 2x20 expansion headers cover all six device I/O banks (Banks 0-5).
- J3 (Bank 0) brings out INITn and DONE configuration status pins for monitoring.
- J8 spans Banks 3/4/5 including the left-side GPLL clock inputs and feedback.
- On-board FT2232H gives USB-JTAG programming plus a USB-UART channel.
- Powers entirely from USB; 12 MHz oscillator and 8 LEDs / 8 DIP switches for quick bring-up.
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