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UMC identification
650x | 80486
650x identification
| | 1 | 2 | |
| UM | 6502 | A | |
| |
| 2. Frequency |
| No designation | 1 MHz |
| A | 2 MHz |
| B | 3 MHz |
| C | 4 MHz |
| |
| | 1. Part number |
| 6502 | 6502 microprocessor (64 KB addressable memory, on-chip clock) |
| 6507 | Modified version of 6502 microprocessor (8 KB addressable memory, on-chip clock) |
| 6512 | Version of 6502 microprocessor without on-chip clock |
80486 identification
| | 1 | 2 | 3 | | 4 | |
| U5 | S | D | LV | - | SUPER33 | |
| |
| 4. Frequency |
| SUPER25 | 25 MHz |
| SUPER33 | 33 MHz |
| SUPER40 | 40 MHZ |
| |
| | | 3. Operating voltage |
| blank | 5 V |
| LV | 3.3 V |
| |
| | | | 2. Chip pin-out |
| blank | SX Pin Grid Array |
| D | DX Pin Grid Array |
| F | LQFP |
| |
| | | | | 1. SX compatibility |
| S | Compatible with 80486SX |
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