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M50436-560 SP微机系统是当今国际上较先进的电压合成式选台系统之一,是日本三菱电机公司80年代开发的专用大规模集成电路芯片。国内新颖21英寸彩电的遥控电路采用本微机系统颇多,本文以飞跃54C2Y21-1型遥控彩电为例进行介绍。一、系统特点及引脚功能 (一)特点本系统具有功能多、可靠性好、耗电省等优点,能自动预置30套节目。可用机键顺序、遥控顺序选台或直接选台。屏幕显示内容多——有六种颜色显示节目号、音量、亮度、对比度、清晰度、色度、视频输入、定时关机开机、实际频道号的指示等。另外,还有每套节目进行 AFT的 ON/OFF置定、多余节目号跳转(SKIP)、视频输入转换、接收波段选择和转换、关机前接收节目号的储存、遥控信号接收及操作等功能。 (二)系统备引脚功能 M50436-560SP是双列直插52脚的彩电遥控部分专用大规模集成电路。其各引脚功能如下:脚① DA
M50436-560 SP microcomputer system is one of the more advanced voltage synthesis type channel selection systems in the world today. It is a special large-scale integrated circuit chip developed by Japan’s Mitsubishi Electric Corporation in the 1980s. The domestic new 21-inch color TV remote control circuit with a lot of the computer system, this leap 54C2Y21-1 remote color TV as an example to introduce. First, the system features and pin functions (A) Features The system has many features, good reliability, power consumption and other advantages, can automatically preset 30 sets of programs. Available key sequence, remote control or channel selection. Screen display content - there are six colors show program number, volume, brightness, contrast, sharpness, color, video input, timer off boot, the actual channel number of instructions. In addition, there are programs such as ON / OFF setting for AFT, SKIP, video input conversion, reception band selection and conversion, program reception before shutdown, remote signal reception and operation . (B) System prepared pin function M50436-560SP is a dual in-line 52-pin color TV remote control dedicated large-scale integrated circuits. The pin functions are as follows: feet ① DA