onTAP’s JTAG Controller is all you need to run tests and program FLASH memory devices. Capable of handling two chains, this device it has on-board, self-referencing VREF, as well as an internal VREF for boards that do not have power to the JTAG chain(s). The onTap JTAG Controller is also capable of Direct Drive Serial Flash Programming for SPI Flash and a low voltage version is also available.