|Word size|| 4 bit|
|Clock||1 MHz-6 MHz|
|Package||DIP42, DIP28, QFP48|
The MB8840/MB8840H series is a family of 4-bit nMOS microcontrollers developed by Fujitsu and introduced in 1977[off?]. This series was very popular for arcade games (e.g. some Atari's Namco Galaga/Xevious systems). This series is architecturally identical to the MB8850 family (A CMOS version).
The "H" versions are identical to their non-"H" counterparts but aimed to be "high performance", capable of operating at higher frequency (up to 8 MHz).
|MB8842||2kx8 bit||128x4 bit||25||69|
|MB8843||1kx8 bit||64x4 bit||37||70|
|MB8844||1kx8 bit||64x4 bit||25||69|
|MB8847||1kx8 bit||64x4 bit||37||70|
|MB8848||1kx8 bit||64x4 bit||25||69|
- Main article: MB8850 ISA
The MB8840 has an identical ISA to that of the MB8850.
|This article is still a stub and needs your attention. You can help improve this article by editing this page and adding the missing information.|
Warning: Default sort key "MB8840" overrides earlier default sort key "MB8840, Fujitsu".
|full page name||fujitsu/mb8840 +|
|instance of||integrated circuit family +|
|instruction set architecture||MB8850 +|
|main designer||Fujitsu +|
|name||MB8840/MB8840H Family +|
|package||DIP42 +, DIP28 + and QFP48 +|
|word size||4 bit (0.5 octets, 1 nibbles) +|