The 8051 8-bit microcontroller just keeps plugging away, adding new peripherals, speed grades, and packaging. Among the latest advances is Dallas Semiconductor's 8051 implementation that delivers a ...
RS-232 transceiver/level shifter. The 4.5 to 5.5-V chip comes in either a 44-pin PLCC or QFP. ($3.40 ea/1,000–stock.) ...
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