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| Main functions |
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| A/D converter |
| MB89550A |
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| Mass |
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| 32 KB |
| 1 KB |
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| MB89557A |
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| series |
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| production |
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| D/A converter |
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| 48 KB |
| 2 KB |
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| MB89558A | |
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| UART or SIO, |
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| UART/SIO, |
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| Equivalent device |
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| PWM timer |
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| OTPROM |
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| 2 KB |
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| MB89557A |
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| MB89P558A | |
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| timer/counter |
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| MB89558A |
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| Evaluation target device |
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| PWC timer |
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| Evaluation |
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| 32 KB |
| 2 KB |
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| MB89550A |
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| MB89PV550A | |
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| device |
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| (Ext.) |
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| series |
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| PPG timer |
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| LCD controller |
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| (32seg. × 4 |
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| com.) |
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50