80C51 Family
Why use the 8051 architecture? The core of the 8051 arguably is used more than any other device. It is an expansion of the i8042 architecture, which is the fundamental processor used in keyboards for personal computers. The architecture has been around for over 25 years. It is constantly being enhanced by various vendors to perform tremendous tasks.
Why has the 8051 continued all these years especially now that new powerful 32 bit ARM Cortex™-M3 devices are available for a mere $1? It makes sense that the 8051 would be replaced by these types of devices. 8051 devices would then be found in only a few legacy products. But, 8051s are everywhere ! The 8051 of today is not the same one from the past. It is faster, smaller, has more ROM and RAM (with banking), more data pointers (up to 8) and far fewer cycles per instruction (from 12 to 1 or 2) plus many new peripherals. It can be a chip or gates programmed into a FPGA. The 8051 continues to evolve.
USB Flash Board 8051
- Features
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- How to Order?
Flash microcontrollers are easy to program, which makes them suitable for rapid software development
environments and educational uses. 
In the past, program code was usually downloaded via a serial
interface, but nowadays many PCs (especially laptops) only have USB ports. This versatile Flash Board
provides a solution to this problem. It is built around an AT89C5131A, which is an extended 8051-family
microcontroller with an 80C52 core and a Full Speed USB port. As a sort of bonus, the IC has a complete
update interface for downloading new firmware.
- 80C52X2 Core (6 Clocks per Instruction)
- USB 1.1 and 2.0 Full Speed Compliant Module
- 16/32-Kbyte On-chip Flash EEPROM In-System Programming through USB
- 3-KbyteFlash EEPROM for Bootloader, 1-Kbyte EEPROM Data
- Flash memory reliably stores program code even after 100,000 erase and program cycles with 10-year minimum data retention
- Keyboard Interrupt Interface on Port P1 (8 Bits)
- 34 general purpose I/O pins connected to 10pins header connectors for easy I/O pins access
- 4 Direct-drive LED Outputs with Programmable Current Sources: 2-6-10 mA Typical
- Industrial popular window Keil C compiler and assembler included (Eval. version)
- Free Flip Windows software for easy program code down loading
- Software bundle in CD-ROM, including tutorials, compiler/assembler,programming utilities, applications notes, 8051 based projects and examples programs
- Getting Started User Manual
- Specifications
- Compiler & Assembler
- uC/51 ANSI C-Compiler 8KB Code Limited
- Keil C Compiler Version 7.50A
- Real-Time Operating Systems (RTOS) for 8051
- Applications Examples
- Extra related information
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