The Web Site to Remember National Semiconductor's Series 32000 Family


Canon is a big electronic manufacturer based in Japan. A Canon laser printer was the first product that used the first embedded processor of Series 32000, the NS32CG16.


According to the Canon web site, the laser printer LBP-A404E was released on September 10, 1992. The CPU of this printer was the NS32CG16. Figure 1 shows the mainboard of the printer. I got the photo from Mr. Asano from Japan. He has made a website about the mainboard with more detailed photos and infos (if you can read japanese...):

Fig. 1. The mainboard of the laser printer LBP-A404E. The grid in the background is 1 cm.

Canon Printer ???

The board in Figure 2 is obviously a part of a Canon product. The NS32CG16V-15 CPU is the heart of the system. It would be interesting to know what does the other part of National Semiconductor. The device named HPC46083WZU/V20 may be a gate array.

Fig. 2. The mainboard of an unknown Canon laser printer.

An interesting device is the chip named HN62408P which is packaged in a 42-pin DIP. It is located in the lower right corner. This device is an 8 MBit ROM which delivers data in 8-bit or 16-bit format. It is used as a character ROM especially for the many complex japanese characters.

If you like the photo in Figure 2 you can see it in higher resolution here.

This chapter was last modified on 4 May 2018. Next chapter: CED