| Manufacturer | Part # | Datasheet | Description |
 Hitachi Semiconductor |
HD6433644
|
1Mb/508P |
H8/3644 Series Hardware Manual
|
 Renesas Technology Corp |
HD6433644
|
4Mb/549P |
8-Bit Single-Chip Microcomputer
|
|
HD6433644
|
3Mb/551P |
Old Company Name in Catalogs and Other Documents
|
|
HD6433644
|
3Mb/551P |
Old Company Name in Catalogs and Other Documents
|
 Hitachi Semiconductor |
HD6433644H
|
1Mb/508P |
H8/3644 Series Hardware Manual
|
|
HD6433644P
|
1Mb/508P |
H8/3644 Series Hardware Manual
|
 Renesas Technology Corp |
HD6433644R
|
4Mb/549P |
8-Bit Single-Chip Microcomputer
|
|
HD6433644R
|
3Mb/551P |
Old Company Name in Catalogs and Other Documents
|
|
HD6433644R
|
3Mb/551P |
Old Company Name in Catalogs and Other Documents
|
 Hitachi Semiconductor |
HD6433644W
|
1Mb/508P |
H8/3644 Series Hardware Manual
|