Ceibo TCP/IP-51 development tools allows connecting peripherals to the Internet using the standard 8051 family of microcontrollers. This is very useful for alarm systems, vending machines, toys and a multitude of other applications.
This software package does not need a realtime operating system - RTOS - to use all the protocol capabilities. Any software environment is acceptable. The system consists of a working package which includes both software and hardware used to develop Internet applications with the minimum effort, as well as using existing designs that do not have the Internet connectivity.
The software includes Internet Protocol routines implemented in C language. These routines are available as linkable object files or as source code. Software utilities for Modem and Ethernet operations as well as definition of timers, interrupts, RAM locations and many others are supplied as source code.
The TCP/IP protocol is used to send and receive e-mails or files. The protocol employs the 8051 internal UART and one timer for baud rate generator. It dials, sends and receives e-mails. The software is very compact in code size and it uses only 15K code and 1K data memory. This software does not use special libraries and so it can be compiled with any 8051 C-Compiler.
In addition to this software, Ceibo offers a development board that contains the 80C51 basic circuits, a Modem or Ethernet Controller, RS232 interface, ISP programmer, power supply, cables and a complete documentation.
This development board, DB-TCP/IP, is a kit with all the necessary elements for direct Internet connectivity. Because all the functions are implemented and can be tested with this working system, it may be used as a design reference. Two options are available: DB-TCP/IP-M (Modem) and DB-TCP/IP-E (Ethernet).
The DB-TCP/IP development boards are 10 x 10 cm populated PCBs with many electronic circuits. The supplied microcontroller is a 89C51RD2, which has 64K flash memory for the firmware. It is pre-programmed with the TCP/IP protocol and many routines to display messages, link to a phone line, and more. The crystal is installed in a socket, so it may be changed by any desired value. A 32K SRAM is also connected to the microcontroller for user applications that need more memory than the on-chip Xdata.
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