TMP87C408N is a single-chip microcomputer integrated circuit designed and manufactured by Toshiba Corporation of Japan for refrigerators. It is used on the refrigerator series of Chunlan and other brands.
1. Internal circuit block diagram and typical application circuit
The TMP87C408N integrated circuit contains various functions such as temperature detection, compressor control, display control, and door light control. The internal circuit block diagram of the integrated block and the left half of the typical application circuit are shown in Figure 1-1, and the right half is shown in the figure. 1-2 is shown. 
Figure 1-1 Internal circuit block diagram of the TMP87C408N integrated block and the left half of the typical application circuit 
Figure 1-2 Internal circuit block diagram of the TMP87C408N integrated block and the right half of the typical application circuit
2. Pin function and data
The TMP87C408N integrated circuit is packaged in a dual-row 28-pin package. The bow function and data of the integrated circuit are listed in Table 1-3. 
Table 1-3 Microcomputer TMP87C408N pin function and data
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