MN|4821JTD(TV) remote control microprocessor

Published:2011/7/8 9:25:00 Author:Lena | Keyword: TV set, remote control, microprocessor | From:SeekIC

MN14821JTB is a remote control 4-bit microprocessor, usually used in TV set etc. The internal circuit consists of Arithmetic Logical Unit (ALU),Random-access memory(RAM),Read-only memory(ROM),instruction encoder and Programmable Logic Array, data flip-latch, instruction register, stack and program counter(PC,XY),data flip-latch(L),accumulator(A),data register(TEMP),decoder(DEC),multiplexer(MPX) and timing control circuit. Specifications: 12k byte ROM 128 *4 bit RAM Special interface circuit is used to display characters in the screen D/A converter (DAC1 and DAC2) used for produce selective tuned voltage and volume control voltage two 4-bit input ports(A and B),two 4-bit output ports(D and E ),one 9-bit dispersed output port(C),and relevant data flip-latch.77 instructions(16 branch conditional transfer commands) assorted used types are M50142P,μPC1373H and μPD4049 pinouts and functions



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