Product category:
Communications ICs (Wired)
News Release from: STMicroelectronics | Subject: NicheLite TCP/IP stack
Edited by the Electronicstalk Editorial
Team on 29 February 2008
Free TCP/IP stack lowers networking
costs
ST and InterNiche have tailored the standard NicheLite TCP/IP stack for optimal performance with the STR91x.
STMicroelectronics has made the NicheLite TCP/IP stack available free of charge with its STR91x 32bit Flash microcontrollers featured for networking applications, lowering the cost of entry to that of open-source offerings but with the advantage of vendor support facilities NicheLite is also royalty-free, helping manufacturers predict and manage their production costs
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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NicheLite accelerates development of applications requiring Ethernet connectivity.
ST and InterNiche have tailored the standard stack for optimal performance with the STR91x.
The stack capabilities can also be easily extended with add-on modules already available from InterNiche.
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As a fully-featured TCP/IP stack with a memory footprint of less than 12Kbyte, NicheLite delivers memory efficiency, low cost and power savings in embedded systems.
Features include a compact TCP layer optimised for simple memory management, data copy prevention, low memory usage and high data throughput.
The NicheLite IP layer supports one hardware interface and is compatible with internet, email and network-management protocols also available from InterNiche.
These include NicheStack PPP, FTP, Telnet Server, HTTP Server, DHCP Server, Email and SNMP.
Other valuable protocols supported include Address Resolution Protocol (ARP), Internet Control Message Protocol (ICMP), User Datagram Protocol (UDP) and Client Bootstrap Protocol (BOOTP).
Customers developing applications for the STR91x family can implement NicheLite at no charge, with the option to purchase support from InterNiche as required.
Included with the stack is the NicheTool debugging and tuning software suite, which provides powerful porting and optimisation capabilities.
Cost-effective access to NicheLite complements the architecture and peripherals of ST's STR91x family, which is optimised for high-performance in embedded networking applications.
Building on the inherently high throughput of the ARM966E-S core, ST has added high-speed burst Flash memory and zero-latency SRAM for efficient instruction execution and data movement.
This allows the STR91x family to achieve 96MIPS peak code execution at 96MHz.
In addition, up to nine fully featured direct memory access (DMA) channels minimise loading on the CPU during data transfers.
The on-chip Ethernet DMA controller, for example, allows raw Ethernet frames to be transferred into SRAM at 91Mbit/s while imposing only 10% CPU loading.
Other advantages for networking applications requiring real-time performance include dynamic power scaling capabilities, as well as a wide variety of on-chip peripherals and interfaces.
These include a USB full speed interface, a CAN interface, three UART/IrDA interfaces, two SPI ports, two I2C ports, an eight-channel 10bit ADC, four 16bit timers and a three-phase AC motor control unit.
STR91x MCUs are available in 80 and 128 LQFP packages and 144-pin BGA package, with up to 544 Kbyte of on-chip Flash and a maximum 96Kbyte of RAM.
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