Technology, Inc.) recently introduced a 28-pin independent Ethernet controllers. Prior to this, an optional embedded systems development for the independent Ethernet controllers are designed for personal computer systems, such as the RTL8019, AX88796L, DM9008, CS8900A, LAN91C111 and so on. These devices are not only complex, bulky and relatively expensive. Most of the Ethernet controller on the market today are more than 80-pin package, and meet the IEEE 802.3 protocol ENC28J60 only 28 pins, both to provide the appropriate function, but also relevant design can greatly simplify and reduce the space.ENC28j60 network module to facilitate users to quickly assess the MCU Ethernet access solutions and applications. Compared to other programs, the module is extremely streamlined.Microcontroller bus for not opening up, although there may be a way of simulated parallel bus connected to other Ethernet controllers, but no matter of efficiency or performance, are not as common with the SPI interface or with I / O port simulation SPI interface ENC28J60 the Program.
the module uses the SPI bus MicroChip high-performance single-chip network interface chip ENC28J60 Ethernet chips, QFN28 package, we use the enc28j60 is the smallest package, the chip though a little expensive, but exquisite.
IEEE 802.3-compliant Ethernet controller integrated MAC and 10 BASE-T PHY
support full and half duplex mode
SPI interface, just take a few of the MCU pins, SPI clock is up to 20MHZ, the maximum speed of up to 10 Mb / s to SPI Interface
using the standard 100mil spacing of 2 * 5 pin connector for easy connection with the MCU
the use of kernel patch Han RJ45 socket with a network of transformers(HR961160C), although more expensive, but further reduce the size, layout is more reasonable, the performance better, more refined.
Link and Activity LED's
a single power supply: 3.3V, 5V pin-compatible standards.
using 25Mhz SMD crystal, metal shell, better quality.