| MB91100 Series Low cost, feature rich |
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| Device Part Number | ROM (kB) | ROM Type | Instruction Cache (KB) | RAM (Bytes) | Max Internal Clock Frequency (MHz) | Multiplier Accumulator | Min I/O | Max I/O | DRAM Controller | DMA Channels | External Interrupts | ADC | Timer / Counter | Pulse Width Modulator | UART | External Bus Interface | Chip Selects | Vcc Min | Vcc Max | Power Saving Modes | Pin Count |
| MB91101A | 0 | ROMless | 1 | 2048 | 50 | No | 0 | 50 | Fast Page and EDO | 8 | 4 + NMI | 4 x 10 bit | 3 x 16 bit | 4 x 16 bit | 3 | Yes | 6 | 4.5 or 2.7 | 5.5 or 3.6 | Yes | 100 |
| MB91106 | 127 | Mask | 0 | 2048 | 50 | No | 0 | 50 | Fast Page and EDO | 8 | 4 + NMI | 4 x 10 bit | 3 x 16 bit | 4 x 16 bit | 3 | Yes | 6 | 2,7 | 3,3 | Yes | 100 |
| MB91F109 | 0 | Flash | 1 | 2048 | 25 | No | TBA | TBA | Fast Page and EDO | 8 | 4 + NMI | 4 x 10 bit | 3 x 16 bit | 4 x 16 bit | 3 | Yes | 6 | 2,7 | 3,3 | Yes | 100 |
| MB91107 | 0 | ROMless | 1 | 133120 | 50 | No | 0 | 69 | Fast Page and EDO | 8 | 8 + NMI | 4 x 10 bit | 3 x 16 bit | 4 x 16 bit | 3 | Yes | 8 | 3 | 3,6 | Yes | 120 |