■Discontinued March 31, 2009 The MKY28 contains 256 bytes of RAM and an automatic communication circuit that works with the RAM. The internal RAM is called ESP-RAM. PASS and SEE automatic communication pins are connected opposite each other 1:1. When you write 1 byte onto the ESP-RAM, data is written to the same address on the partner at almost the same time. The IC itself has communication protocol in hardware. This makes data transfer fast and strong against noise. Thus, you can transfer data between microcontrollers (user CPUs) without worrying about protocol.

No need for protocol. Take a load off your software.

The memory (ESP-RAM) in the MKY28 is shared between sending and receiving sides. There is no need for communication protocol. This eliminates the need for commands from complex communication programs, makes division of functions easy, and greatly improves debugging efficiency. From initialization to all controls, control is performed in 4 bytes. System design is easy because automatic communication and automatic receiving functions are built in.

High-speed communication at 2.5 Mbps. Long-distance transfer over more than 1 km.

The MKY28 transfers data up to 39 times as fast as RS-422 (when the rate is set to 2.5 Mbps). Forget the stress of waiting for connection as you add new devices. The MKY28 reduces time lag from protocol control of communication software. It also can communicate over distances of more than 1 km, depending on the transmission driver and transfer rate you select.

You can use the control register settings to select the best speed, distance, and number of retries for the system.

Connect with just two signal lines. Even supports systems with heavy noise.

All you need to connect MKY28 ICs to each other is two signal lines. This saves wiring and makes it easy to connect systems to each other. You can connect them to microcontrollers (user CPUs) like SRAM, and it does not have to be a specified CPU; read/write access time is 240 ns. The MKY28 deals with spike noise not by using clock edges, but by synchronizing with the level of the clock sent by the partner. This makes communication very reliable.

Reliable data transfer that's easier than LAN and faster than RS.

The MKY28 is more compact and lower cost than LAN. By taking advantage of its response speeds faster than RS and its automatic receiving function, you can reduce the load on microcontrollers (user CPUs) from your program. It uses the communication format of monitoring from both sending and receiving sides. Its high-quality and high-speed serial transfer can improve system reliability. Its read/write access time is 240 ns. The high-speed communication makes it possible to develop systems that need to be real-time.

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