SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER

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4-BIT SINGLE-CHIP MICROCOMPUTER

DESCRIPTION\nThe 4551 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The computer is equipped with an 8-bit timer with a reload register, a 14-bit timer which is also used as a watchdog timer, a ● Minimum instruction execution time ............................ 1.5 µs\n   (f(XIN)=8.0 MHz, VDD=5.0 V, system clock = f(XIN)/4)\n● Supply voltage\n   ............................. 2.5 V to 5.5 V (One Time PROM version)\n   ....................................... 2.2 V to 5.5 V (Mask ROM version)\n;

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