NEC μPD444
The μPD444 was a 4-bit RAM LSI by NEC. It has 1024 nibbles.[1]
Used in
- Roland TB-303 (μPD444C ×3)[2]
- Roland TR-606 (μPD444C ×2)[3]
- Roland TR-808 (μPD444C ×4)[4]
References
- "μPD444 data sheet" NEC, Dec 1981
- "TB-303 service notes" Roland, Feb 1982
- "TR-606 service notes" Roland, Jan 1982
- "TR-808 service notes" Roland, Jun 1981
Downloads
Documentation
- "μPD444 data sheet" NEC, Dec 1981
RAM: NEC μPD444