Board Olimex Duinomite - RetroBSD/retrobsd GitHub Wiki
Duinomite board (schematics, manual, Eagle files) is a low cost Arduino compatible board, based on Microchip PIC32MX795 microcontroller.
Features:
- Microchip PIC32MX795 microcontroller 80 MHz (MIPS architecture)
- 31 usable i/o pins
- Compatible with Arduino shields
- USB OTG controller with mini-USB connector
- SD card connector at SPI3
- On-board crystal 8 MHz
- RTC crystal 32768Hz
- Automatic power select: from USB or from external source
- External power connector
- One power LED and one user LED
- User button
- Reset button
- User GPIO port (13x2 header, Maximite compatible)
- UEXT port for external UART/SPI/I2C peripheral
- EXT1 port for Video/keyboard/sound
- Li-Po charger for Lithium Polimer battery
- Industrial temperature range -25C+85C
Memory:
- 512 kbytes of Flash memory
- 12 kbytes of additional boot Flash memory
- 128 kbytes of RAM
Digital outputs can sink or source up to 18 mA. A rich set of peripheral functions is available: UART, SPI, I2C, ADC, timers. Two internal oscillators available: 8 MHz and 32 kHz. Power can be sourced from miniUSB, or from external power supply +9...30 VDC.
Signals
Digital connector
| Signal | PIC32 | Function |
|---|---|---|
| AREF | RB0 (16) | VREF+, PGED1 |
| GND | -- | |
| D13 | RD1 (49) | GPIO-3, SCK3, U4TX |
| D12 | RD2 (50) | GPIO-5, SDA3, SDI3, U1RX |
| D11 | RD3 (51) | GPIO-7, SCL3, SDO3, U1TX |
| D10 | RD11 (45) | GPIO-9, INT4 |
| D9 | RB12 (27) | GPIO-22, TCK, LED2 |
| D8 | RB11 (24) | GPIO-20, TDO |
| D7 | RE7 (3) | GPIO-18 |
| D6 | RE6 (2) | GPIO-16 |
| D5 | RE5 (1) | GPIO-14 |
| D4 | RE4 (64) | GPIO-12 |
| D3 | RE3 (63) | GPIO-10 |
| D2 | RE2 (62) | GPIO-8 |
| D1 | RE1 (61), RB14 (29) | GPIO-6, U5TX |
| D0 | RE0 (60), RB8 (21) | GPIO-4, U5RX |
Analog connector
| Signal | PIC32 | Function |
|---|---|---|
| A0 | RB3 (13) | GPIO-21 |
| A1 | RB4 (12) | GPIO-19 |
| A2 | RB6 (17) | GPIO-17, PGEC2 |
| A3 | RB7 (18) | GPIO-15, PGED2 |
| A4 | RB9 (22) | GPIO-13 |
| A5 | RB10 (23) | GPIO-11, TMS |
GPIO connector
| PIC32 | Pin | Pin | PIC32 |
|---|---|---|---|
| Ground | 1 | 2 | Ground |
| RD1 (49) | 3 | 4 | RE0 (60) |
| RD2 (50) | 5 | 6 | RE1 (61) |
| RD3 (51) | 7 | 8 | RE2 (62) |
| RD11 (45) | 9 | 10 | RE3 (63) |
| RB10 (23) | 11 | 12 | RE4 (64) |
| RB9 (22) | 13 | 14 | RE5 (1) |
| RB7 (18) | 15 | 16 | RE6 (2) |
| RB6 (17) | 17 | 18 | RE7 (3) |
| RB4 (12) | 19 | 20 | RB11 (24) |
| RB3 (13) | 21 | 22 | RB12 (27) |
| +5V | 23 | 24 | +3.3V |
| Ground | 25 | 26 | Ground |
UEXT connector
| UEXT | PIC32 | Function |
|---|---|---|
| 1 | -- | +3.3v |
| 2 | -- | GND |
| 3 | RF5 (32) | U2TX, SDO4 |
| 4 | RF4 (31) | U2RX, SDI4 |
| 5 | RD10 (44) | SCL1 |
| 6 | RD9 (43) | SDA1, U4RX |
| 7 | RD2 (50) | SDI3, D12, GPIO-5, SD card |
| 8 | RD3 (51) | SDO3, D11, GPIO-7, SD card |
| 9 | RD1 (49) | SCK3, D13, GPIO-3, SD card |
| 10 | RB11 (24) | D8, GPIO-20, TDO |
Video/keyboard/sound connector
| EXT1 | PIC32 | Function |
|---|---|---|
| 1 | -- | +3.3v |
| 2 | -- | GND |
| 3 | RD6 (54) | KBD_CLK |
| 4 | RD7 (55) | KBD_DATA |
| 5 | RD4 (52) | VGA_HSYNC |
| 6 | RB12 (27) | D9, GPIO-22, LED2, VGA_VSYNC |
| 7 | RG8 (6) | VIDEO, SDO2 |
| 8 | RD0 (46) | SOUND |
| 9 | -- | +5v |
| 10 | -- | VGA_GND |
LEDs and button
| PIC32 | Function
---------|------------|-------- LED1 | RB15 (30) | Green LED2 | RB12 (27) | Yellow, D9, GPIO-22 Button | RD8 (42) | Active low
UART and SPI pins
| UART | SPI | PIC32 | Connector |
|---|---|---|---|
| U1RX (U1ARX) | SDI3 | RD2 (50) | D12, GPIO-5, SD card |
| U1TX (U1ATX) | SDO3 | RD3 (51) | D11, GPIO-7, SD card |
| U3RX (U2ARX) | SDI2 | RG7 (5) | |
| U3TX (U2ATX) | SDO2 | RG8 (6) | EXT1-7, VIDEO |
| U2RX (U3ARX) | SDI4 | RF4 (31) | UEXT-4 |
| U2TX (U3ATX) | SDO4 | RF5 (32) | UEXT-3 |
| U4RX (U1BRX) | -- | RD9 (43) | SDA1, UEXT-6 |
| U4TX (U1BTX) | SCK3 | RD1 (49) | D13, GPIO-3, SD card |
| U6RX (U2BRX) | -- | RG9 (8) | EXT1-5, VGA_HSYNC |
| U6TX (U2BTX) | SCK2 | RG6 (4) | |
| U5RX (U3BRX) | -- | RB8 (21), RE0 (60) | D0, GPIO-4 |
| U5TX (U3BTX) | SCK4 | RB14 (29), RE1 (61) | D1, GPIO-6 |