Selected Product: Chips ICs and Modules/Internet/Ethernet/SPI-NET
Ethernet to SPI Converter Order Code: SPI-NET Price: $37.00
SPI-NET provides an easy way of connecting any microcontroller like Microchip PIC or Atmel AVR to an Ethernet network. The SPI-NET embedded module is based on the Microchip ENC28J60 Ethernet controller.
Main features
- 10BASE-T physical layer, full duplex or half duplex
- Includes RJ45 connector with galvanic insulation
- Two LED indicators
- Media access controller (MAC)
- 8 KB of buffers for reception and transmission
- Hardware assisted checksum calculation
- Power by 3.3 V or 5 V
- Outputs with both 3.3 V and 5 V levels
- 5 V tolerant inputs
- Mounting holes for firm mechanical fixing
- Microcontroller connection to 8 x 2 0.1 inch interface
- Example program in C
Details
SPI-NET contains a 10BASE-T physical layer (PHY) including a RJ45 connector with galvanic insulation and media access control logic (MAC). The heart of SPI-NET - the ENC28J60 chip - is an IEEE 802.3 compliant stand-alone Ethernet controller. It supports half duplex and full duplex operation at 10 Mb/s and it is equipped with 8 KB of dual port SRAM for incoming and outgoing data. Besides other features, it includes a hardware engine for copying blocks of memory and checksum calculation in one's complement arithmetic (IP checksum) and CRC. It connects to an external microcontroller by a SPI interface, which can be easily implemented in any microcontroller and requires only 4 or 5 signals.
The module is powered by single power supply - either +3.3 V or +5 V. All module inputs are LVTTL and are 5 V tolerant. All outputs are doubled - they are available in 3.3 V levels (connected directly to ENC28J60) and, if 5 V power supply is used, also in 5 V levels. This is necessary for AVR microcontrollers operated on 5 V which have CMOS input levels and cannot reliably work with 3.3 V signals.
Two LED indicators on the RJ45 connector help the user to monitor Ethernet activity.
Four mounting holes allow for firm mechanical fixing of the SPI-NET module in user's equipment. The SPI interface is connected to open holes, which allow for flexible connection of a cable or 2.54 mm/0.1 inch header (top/bottom, straight/right angle).
An example program in C is available royalty free. It is written for the PVK40 development board with PIC18F458 but this can be easily modified for other microcontrollers.
Download Software ZIP file
datasheet
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