There are two identical chips with this description on the soundboard. Black with white print. They are about 1.8mm x 0.9mm in demension. They have 14 teeth on either side of their length. Motorola symbol printed on bottom left of the chips.
Microchip, 1.8mm x 0.9mm in dimension.
Other Marks or Symbols
Each of these is an 8-bit DRAM chip to help process the sound information of the sound board within the SNES.
Country of Origin
City of Origin
Motorola Semiconductor Products Sector Plant
According to the Wikipedia page, these chips derive from the Motorola 6800 Microprocessor that was made in the 1980's.
Silicon and aluminum
https://emu-docs.org/Genesis/Datasheets/5p832.pdf This is a datasheet for an identical chip from an earlier generation of SNES. As for the location of the assembly plant, it has been closed down and I am technically inferring that this was the plant used; I looked up what plants were active in the late '80's and early '90's and found that the Semiconductor plant in Japan was located in Sendai.
Motorola, “Audio PSRAM,” Mapping Our Devices, accessed October 23, 2020, http://maps.dgst101.net/items/show/250.