DSP, Micros & Memory


33 MIPS 8051 micros have in-application programmable flash memory

28 January 2004 DSP, Micros & Memory

Dallas Semiconductor has introduced its latest ultra-high-speed microcontrollers, the DS89C430, DS89C440, and DS89C450. At one clock-per-machine cycle, these microcontrollers can achieve up to 33 MIPS, making the DS89C430 the fastest drop-in 8051 microcontroller available, according to the manufacturer. In addition, the DS89C430, DS89C440, and DS89C450 integrate 16, 32, and 64 kB flash memories, respectively.

Available in 40-pin DIP, 44-pin PLCC, and 44-pin TQFP packages, the DS89C430/DS89C440/DS89C450 are pin and code compatible with the original 8051. Standard features include two full-duplex UARTs, 13 interrupt sources with five priority levels, variable length MOVX timing, programmable watchdog timer, and power-fail reset. Additional performance improvements include dual data pointers with auto increment/decrement that enable developers to quickly move data at rates in excess of 2 Mbps.



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