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Dallas Semiconductor Offers 75MHz 8051 Microcontroller with 10/100 Ethernet

By Len Tubb of Dallas Semi (courtesy of Linda Riedman of Fleishman-Hillard Portland)
Nov 18, 2002 - 10:00:00 PM

 
Dallas Semiconductor introduces a single-cycle 75MHz 8051 with a 10/100 Ethernet MAC, TCP IPv4/v6 stack, and CAN2.0b
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DALLAS, TX—November 4, 2002—Dallas Semiconductor (NASDAQ: MXIM) introduces the DS80C400, a networked microcontroller chip that integrates a high-speed 8051 core, a 10/100Mb Ethernet MAC, and silicon software TCP IPv4/v6 stack. The DS80C400 can be connected directly to IP networks and costs less than $9.00, making it the most affordable solution for your embedded networking needs. Operating at up to 75MHz, the DS80C400 provides ample speed to perform local control while also servicing network requests. In addition to the Ethernet MAC, the DS80C400 includes three synchronous/asynchronous serial ports that operate up to 18.75Mbps, a CAN2.0B controller, up to eight ports (64 I/O pins), and a 1-Wire® master.

DS80C400 with embedded ethernet
DS80C400 with embedded ethernet

Features Include:
- Single 8051 instruction cycle in 54ns
- DC to 75MHz clock rate
- Flat 16MB address space
- Four data pointers with auto-increment/decrement and select-accelerate data movement
- 16/32-bit math accelerator
- Multitiered Networking and I/O
- 10/100 Ethernet Media Access Controller (MAC)
- CAN 2.0B controller
- 1-Wire net controller
- Three full-duplex hardware serial ports
- Up to eight bidirectional 8-bit ports (64 digital I/O pins)
- ROM Firmware
- Supports network boot over Ethernet using DHCP and TFTP
- Full, application-accessible TCP/IP network stack
- Supports IPv4 and IPv6
- Implements UDP, TCP, DHCP, ICMP, and IGMP
- Preemptive, priority-based task scheduler
- MAC address can optionally be acquired from IEEE-registered DS2502-E48

To enable access to the network, a full application-accessible TCP IPv4/6 network stack and OS are provided in ROM. The network stack supports up to 32 simultaneous TCP connections and can transfer up to 5Mbps through the Ethernet MAC. Its maximum system-clock frequency of 75MHz results in a minimum instruction cycle time of 54ns. Access to large program or data memory areas is simplified with a 24-bit addressing scheme that supports up to 16MB of contiguous memory. To accelerate data transfers between the microcontroller and memory, the DS80C400 provides four data pointers, each of which can be configured to automatically increment or decrement upon execution of certain data pointer-related instructions. The DS80C400's hardware math accelerator further increases the speed of 32-bit and 16-bit multiply and divide operations as well as high-speed shift, normalization, and accumulate functions.

Applications that require network connectivity such as MP3 audio players, web cameras, environmental controls, and industrial equipment can use the DS80C400's network interface for data collection, remote monitoring and control as well as remote application updates. The resident silicon software on the chip supports Internet standards such as TCP, UDP, IPv4/v6, IGMP, ICMP, TFTP, and DHCP. Applications can be executed from local memory or downloaded from the Internet for quick application updates.

Build an embedded web server in hours instead of months using the DS80C400 reference design. A free download of the Tiny Internet Interface (TINI®) runtime environment is available at www.maxim-ic.com/TINI. The DSTINIm400-144 verification module is also available for developers who want a proven implementation of the reference design for rapid evaluation and system integration. To streamline access to the network, application code can be written in Java™ or C.

Dallas Semiconductor Offers 75MHz 8051 Microcontroller with 10/100 Ethernet

This Article has been seen 16333 times

Product data and specifications in this article are the responsibility of the manufacturer. No warrenty is expressed or implied as to the accuracy of manufacturer-supplied data. So there.
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