General
|
General Information |
The 6800 was Motorola’s first microprocessor. The 6800 was introduced to directly compete with Intel’s 8080. Much of the design was based on Intel’s 8008. The 6800 had a very similar architecture to the 8080 with some differences at the register level. For example, the 6800 had two accumulators while the 8080 had one. The 6800 a smaller number of general purpose registers, but had a index register for array access to memory. The 6800’s instructions are more complex that the 8080. Depending on the application either processor could slightly faster than the other. |
|
Production |
2nd Quarter 1974 |
| Designers | Unknown |
Architecture
| Type | Data Word | Address Space | Clock | Instruct- ions | Assists | Reg’s GP | Reg’s Math | Reg’s Index | IO Ports | Stack | Interrupts | Memory |
| CPU, NMOS | 8-bit | 64K | 1Mhz | 78 | BCD | 2 | 0 | 1 | 8 | Ext RAM | Vectored Multi-level | NA |
Packages
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Chip Name |
Package |
On-Chip Identification |
Picture |
General Comments |
| MC6800L | Gray ceramic, gold lid, 40 gold side braised leads | MC6800L | Standard versions had a temperature range of 0-70oC. | |
| MC6800S | MC6800S | S = CerDIP?L = Ceramic? | ||
| MC6800D | MC6800D | |||
| MC6800P | Black plastic, 40 tin leads | MC6800P |  |
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| MC6800CL | MC6800CL | “C” versions had a temperature range of -40-85oC. | ||
| MC6800CS | MC6800CS | |||
| MC6800CD | MC6800CD | |||
| MC6800CP | Black plastic, 40 tin leads | MC6800CP |  |
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| MC68A00P | ||||
| MC68A00S | ||||
| MC68A00CP | ||||
| MC68A00CL | ||||
| MC68B00P |  |
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| MC68B00S |
Related Chips
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Related Chips |
MC6801, MC6802, MC6803, MC6805, MC6809 |
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Second Sources |
AMI, Fairchild, Hitachi |
| Support Chips |