Interface Adapter DIOLAN DLN-4M
DLN-4M PC-I2C/SPI/GPIO Interface Adapter is a major step towards limitless of the USB-to-serial connectivity.
Detailed Description
Powered by state-of-the-art ATSAM3U microcontroller by Atmel, this device represents drastically enhanced capabilities in comparison with its counterparts.
High-Speed USB interface (480 MHz) significantly increases the PC-SPI bandwidth of DLN-4M Adapter.
Each of the USB adapter's 48 I/O pins can serve as a general purpose digital input or digital output (GPIO). You may set output values for digital outputs and get current values both for inputs and outputs. DLN-4M Interface Adapter can notify your application when the input value changes by sending an event. You can also configure the USB-IO adapter to send events only after specific changes (e.g. when input value changes from logical "1" to "0"). Each I/O line can function in open-drain mode, which permits several outputs to be connected and is equipped with an embedded pull-up resistor. Pull-up resistors are used to ensure that inputs to I/O lines settle at expected levels, if external devices are disconnected or high-impedance. A debounce filter is used to prevent registering unwanted signal pulses.
Serial Peripheral Interface Bus (SPI)
SPI bus supports all 4 SPI modes and frequencies in the range from 376 kHz to 48 MHz. The device can perform half-duplex (read or write) and full-duplex (simultaneous read/write) data transactions. You can use an SPI master configuration and configure SPI bus clock polarity, phase and frequency as well as number of bits to transfer. DLN-4M Interface Adapter can be used to communicate with several external devices (ADC and DAC, RTC, temperature and pressure sensors, LCD controller, etc.).
Inter-integrated Circuit (I2C)
The DLN-4M interface adapter supports I2C master configuration. You can configure I2C bus frequency in the range from 1470 Hz to 400 kHz. Frequencies of up to 1 MHz are supported, however, due to GPIO DC current limitations, the necessary resistance of pull-up resistors cannot be ensured.
Light Emitting Diodes (LED) Module
DLN-4M adapter is fitted with a single status LED and two user-controlled LEDs. The status LED shows current state of your device. Each of the two user-controlled LEDs can be configured using the API to reflect current state of your program.
Other Names:
DLN4M, DLN 4M
