| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 87C749 | 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count | 168K |
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| 2 | 87C749 | 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count | 168K |
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| 3 | 87C749 | 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count | 205K |
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| 4 | 87C749 | 80C51 8-bit microcontroller family | 205K |
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| 5 | 87C749EFPN | 80C51 8-bit microcontroller family | 205K |
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| 6 | 87C749EFPN | 80C51 8-bit microcontroller family | 205K |
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