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1
OVERVIEW
The RU450-SP is very low-cost embedded controller for the ultra-high-speed DS89C450 microcontroller.
The RU450-SP complements the line of MCS-51 single-chip mode products from Rigel Corporation. This
line includes the R-51SP, R-51SD and the R-420SP.
The RU450-SP has a mini USB port, similar to those used on MP3 players and cameras. The USB port
communications is used for both programming the board, and for communications to be performed by the
downloaded application. Moreover, the board may be run from the USB power, eliminating the need for
an external power supply.
The RU450-SP is intended to be embedded into an end product. Connections for the ports may be made
through sockets, headers, or straight soldering into the ports.
The combination of the DS89C450 used with the Rigel Corporation's Reads51 software allows the
microcontroller to be programmed and run in the single-chip mode. That is, the board will run code from
internal ROM, using the on-chip RAM. Software for the boards can be written, edited, compiled and
downloaded using Reads51. There is an industrial-grade slide switch that determines if the
microcontroller is in the program mode or in the run mode. For OEM applications, the board may be
populated without the slide switch.
The RU450-SP is ideal for:
•
Noisy environments, e.g., industrial automation, automotive control.
•
Low-cost general control as a high-powered replacement for the various BASIC controllers.
•
Classroom and educational use, e.g., robotics, mechatronics projects.
•
OEM subsystems (see Section 5 for OEM customization options).
(Board dimensions 1.8 by 1.0 inch, 4.6 by 2.5 cm)
Board features:
•
On-board serial-to-USB converter that appears as a VCP (Virtual Communications Port) to the
PC.
•
Industrial-grade program/run slide switch.
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Industrial-grade reset push button.
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Power LED.
•
24MHz CPU clock (up to 24 MIPS).
Processor features:
•
On-Chip Memory
• 64Kb Flash memory
• 1 Kb XMOV-type RAM
• In-Application Programmable