NEC μPD650
The μPD650 was a 4-bit CPU by NEC.[1][2]
It has 96 nibbles of RAM, and 2000 bytes of ROM.[1] It supports the extended μCOM-4's full instruction set of 80 instructions.
Used in
- Roland TB-303 (μPCD650C-133)[3]
- Roland TR-606 (μPD650C-128)[4]
- Roland TR-808 (μPD650C-085)[5]
References
- "NEC Microcomputer Products 1984 Data Book" NEC, 1983
- "μPD650 data sheet" NEC, Oct 1980
- "TB-303 service notes" Roland, Feb 1982
- "TR-606 service notes" Roland, Jan 1982
- "TR-808 service notes" Roland, Jun 1981
Downloads
Documentation
- "μPD650 data sheet" NEC, Oct 1980
Microprocessors: Motorola 68000 | NEC μPD650 | NEC μPD780 | NEC μPD8048 | NEC μPD8080 | NEC V50