You can connect several USB to SPI adapters to the same PC and interface them from the same software.Įvery adapter is uniquely identified by serial number, assigned during the manufacturing. Need to interface separate SPI busses simultaneously? ID and serial numbers are accessible from software. It is supported only by DLN-4M and DLN-4S adapters. The exact quantity of available SS pins depends on specific adapter (see comparison table). This is important for rapid testing and debugging of closed SPI system.Ĭonnect multiple SPI slaves. The amount depends on specific device (see comparison table).ĭLN SPI to USB adapters can share the bus with another SPI master device. The USB to SPI adapters can also supply power for your hardware. The DLN USB-SPI adapters are powered directly from USB. Provide up to 350 mA of power to your embedded project. The DLN adapters can supply 3.3V, but DLN-1 and DLN-2 adapters are 5V tolerant, so you can use them in 5V SPI circuits. The SPI bus voltage can be supplied either by DLN USB-SPI adapter, or by your hardware. The ability to set any frame size in the available range allows the DLN adapters to support a wide range of SPI slave devices. Some SPI slave devices (for example, digital-to-analog or analog-to-digital converters) operate even with 12-bit words.

Logically, your application and an SPI slave device treat this data as an array of 8-bit or 16-bit words within single USB frame. The DLN adapter transmits the data bit after bit via SPI bus. You can configure the size of data frame and instruct DLN series adapter to reassert slave select pin between frames. While others require slave select line to be reasserted for each byte or word of data (data frame). Some SPI slave devices are able to receive large data packages during a single transaction, SPI slave reselection between data framesĮvery SPI transmission starts with selecting the slave device. Delay between different slaves selections.You can configure delays at different data transmission stages to fulfill the slave device requirements: Some SPI slave devices require additional time to process data.

Usb spi programmer