MC68HC05B4CFU 查看數據表（PDF） - Freescale Semiconductor

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MC68HC05B4CFU

Microcontrollers

Freescale Semiconductor 

Conventions

Where abbreviations are used in the text, an explanation can be found in the

glossary, at the back of this manual. Register and bit mnemonics are defined in the

paragraphs describing them.

An overbar is used to designate an active-low signal, eg: RESET.

Unless otherwise stated, shaded cells in a register diagram indicate that the bit is

either unused or reserved; ‘u’ is used to indicate an undefined state (on reset).

Unless otherwise stated, pins labelled “NU” should be tied to VSS in an electrically

noisy environment. Pins labelled “NC” can be left floating, since they are not bonded

to any part of the device.

TPG

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