ACEX 1K50 FPGA Board for JOP Core

ACEX 1K50 FPGA Board for JOP Core


Category: Prototype Board

Created: September 11, 2004

Updated: January 27, 2020

Other project properties

Development Status: Stable

Additional info: FPGA proven

WishBone compliant: No

WishBone version: n/a

License: GPL


This is a small board with the low-cost ACEX FPGA with some SRAM and Flash. It is designed as a module for soft-core CPU development. I've used this board as basis for JOP - the Java processor. JOP still fits into the ACEX 1K50.

See some pictures of the board at: http://www.jopdesign.comboard.jsp

The schematic and the PCB layout is provided under GPL.


- Altera ACEX 1K50TC144-3 FPGA
- Voltage regulators (3V3, 2V5)
- Crystal clock (20 MHz)
- 512KB Flash (for FPGA configuration and program)
- 128KB Ram
- Byteblaster port
- Watchdog with LED
- EPM7032 PLD to load FPGA from flash (on watchdog reset)
- Serial interface (MAX323A)
- 56 general IO pins


- Board is final
- Used in several projects
- Single page schematic can be used with the free version of Eagle:

FILE: jopcore.pdf

FILE: jopcore.pdf
- abc