| Features | 80188 | 80C188/80C188XL |
| Manufacturing technology | NMOS | CHMOS |
| Operating modes | | Compatibility mode: 80188-compatible mode (except 8087)
Enhanced mode: new features
On Circuit emulation mode |
| Co-processor interface | 8087 | None |
| Integrated peripherals | | DRAM refresh control unit (Enhanced mode only) |
| Power consumption | | Low: Approximately 20% (80C188) or 10% (80C188XL) from 80188 power consumption |
| Power-saving | None | Power-save mode: the processor operates at a fraction of external frequency |
| Pinout | | Some pins perform different functions in Enhanced mode: 33 (LCS), 34 (UCS), 47 (Test), 50 (HOLD), 51 (HLDA), and 64 (RFSH) |
80C188XL is a 80C188 processor with redesigned core. The 80C188XL has lower
power consumption and higher operating frequencies than the 80C188,
other than that it's completely functionally and pin-compatible with
the 80C188.
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