| ??? 05/11/05 21:59 Read: times |
#93329 - Fast 8051 look different, single # core? Responding to: ???'s previous message |
while things like:
"Fast 16-bit wide internal instruction path" look impressive this nowadays won't suffice for a "Fast 8051". There are 8051 derivatives (IIRC the manufacturor had been named within 6 minutes of the original post) which have a 32-BIT INTERNAL INSTRUCTION PATH in order to have the core not stalled on memory accesses. And as this might not be enough (>=40ns for a 32bit wide memory access) these devices include a branch target cache. Indeed the devices are so fast that the manufacturor itself hasn't noticed yet. Let me explain the above polemic statement: the manufacturor has been producing for quite a while extremely fast 8051. And instead of making a fortune of the fast core the manufacturor seems to lay its focus on added analog circuitry (read: ADC/DAC, costly devices). It may be due to my ignorance but I'm not aware of ANY other 8-bit CPU which (need to) incorporate a cache. They IMHO should additionally offer a device in some standard housing. Greetings, Frieder |
| Topic | Author | Date |
| Fast 8051 | 01/01/70 00:00 | |
| drop-in - no | 01/01/70 00:00 | |
| errata? | 01/01/70 00:00 | |
| Most parts have bugs. | 01/01/70 00:00 | |
| ST uPSD34xx series | 01/01/70 00:00 | |
| Fast 8051 look different, single # core? | 01/01/70 00:00 | |
| jump cache | 01/01/70 00:00 | |
| drop-in | 01/01/70 00:00 | |
Fast? | 01/01/70 00:00 |