OpenEPM1270 Package B, CPLD Development Board
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Opis
Overview
OpenEPM1270 is a CPLD development board that features the EPM1270 device onboard. It supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with ALTERA MAX II series CPLD devices.
What's On Board
- EPM1270:onboard CPLD device which features:
- Operating Frequency: 50MHz
- Operating Voltage: 1.5-3.3V
- Package: QFP144
- I/Os: 116
- LEs: 1,270, the equivalent to 4,000 logic gates
- Debugging/Programming: JTAG
- AMS1117-3.3: 3.3V voltage regulator
- Power switch
- Power indicator
- LEDs: convenient for indicating I/O status and/or program running state
- Joystick: five positions
- Reset button
- Buzzer
- 8 I/Os interface: for connecting accessory boards
- 16 I/Os interface: for connecting accessory boards
- 8 I/Os interface: for connecting accessory boards
- 32 I/Os interface: for connecting accessory boards
For interface 9-12: it's possible to emulate the interfaces as ONE-WIRE, USART, I2C, SPI, PS/2, etc.
- 1-WIRE interface: for connecting 1-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
- Character LCD interface: for connecting character LCD, such as the LCD1602 (5V Blue Backlight) in Package B
- 5V DC jack
- JTAG interface: for programming/debugging
- MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion
- LEDs jumper
- Buzzer jumper
Examples
OpenEPM1270 comes with various examples codes for the supported peripherals, which give you a quick start to develop your own application.
| Peripheral | Description | Interface | Verilog | VHDL |
|---|---|---|---|---|
| AT24CXX | EEPROM | I2C | Y | Y |
| FM24CXX | FRAM | I2C | Y | Y |
| DS18B20 | Temperature sensor | 1-WIRE | Y | Y |
| SP3232 | Serial communication | UART | Y | Y |
| SP3485 | Serial communication | UART | Y | Y |
| PL2303 | USB TO UART | UART | Y | Y |
| CY7C68013A | USB DEVICE | USB | Y | |
| Buzzer | Sound device | 1I/O（PWM） | Y | Y |
| PS/2 keyboard | Input device | PS/2 | Y | Y |
| Single buttons | Input device | ---- | Y | Y |
| 4x4 keypad | Input device | 8I/Os | Y | Y |
| Joystick | Input device | 5I/Os | Y | Y |
| LED | Display device | ---- | Y | Y |
| 8 SEG LED | Display device | 13I/Os | Y | Y |
| VGA monitor | Display device | VGA | Y | Y |
| Character LCD | Display device | 11I/Os | Y | Y |
Debugging/Programming Interfaces
The OpenEPM1270 integrates JTAG interface for programming/debugging.
JTAG Signal Names & Description
| Pin | Signal Name | Description |
|---|---|---|
| 1 | TCK | Clock signal |
| 2 | GND | Signal ground |
| 3 | TDO | Data from device |
| 4 | VCC(TRGT) | Target power supply |
| 5 | TMS | JTAG state machine control |
| 6 | NC | No connect |
| 7 | NC | No connect |
| 8 | NC | No connect |
| 9 | TDI | Data to device |
| 10 | GND | Signal ground |
JTAG Header Pinout
Development Resources
The User Guide CD includes development resources listed as follow:
- Related Software (Quaters II etc.)
- Demo Code (Verilog and VHDL)
- Schematic (PDF)
- CPLD Development Documentations (Datasheets etc.)
Wiki: OpenEPM1270
Package Contains
Standard Package
- OpenEPM1270 development board x 1
- 4-pin wire x 2
- 2-pin wire x 2
- USB power cable x 1
- User guide CD x 1
2
3
4
Accessory Boards Package
- USB type A to Mini-B cable x 1
- PL2303 USB UART Board (mini) x 1
- LCD1602 (5V Blue Backlight) x 1
- AT24CXX EEPROM Board x 1
- DS18B20 x 1
- VGA PS2 Board x 1
- CY7C68013A USB Board (mini) x 1
- 8 SEG LED Board x 1
- 8 Push Buttons x 1
- 4x4 Keypad x 1
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3
4
6
7
8
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