Audio PSRAM
Title
Audio PSRAM
Description
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.
Creator
Motorola
Format
Microchip, 1.8mm x 0.9mm in dimension.
Language
English print
Curator
Zachary Caldwell
Part Number
MCM51L832AF10
Date Code
9232
Other Marks or Symbols
RZZZZ
Function
Each of these is an 8-bit DRAM chip to help process the sound information of the sound board within the SNES.
Designer
Motorola
Manufacturer
Motorola
Country of Origin
Japan
City of Origin
Sendai
Assembly Location
Motorola Semiconductor Products Sector Plant
Origin
According to the Wikipedia page, these chips derive from the Motorola 6800 Microprocessor that was made in the 1980's.
Raw Materials
Silicon and aluminum
Evidence
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.
Collection:
Super Nintendo
Tags
Citation
Motorola, “Audio PSRAM,” Mapping Our Devices, accessed May 2, 2026, https://maps.dgst101.net/items/show/250.
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