64 lines
2.2 KiB
Markdown
64 lines
2.2 KiB
Markdown
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来源：STM32 Cortex®-M4 MCUs and MPUs Programming Manual Rev 10，Page 12
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1
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About this document
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This document provides the information required for application and system-level software
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development. It does not provide information on debug components, features, or operation.
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This material is for microcontroller software and hardware engineers, including those who
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have no experience of Arm products.
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This document applies to Arm®(a)-based devices.
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1.1
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Typographical conventions
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The typographical conventions used in this document are:
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1.2
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List of abbreviations for registers
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The following abbreviations are used in register descriptions:
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a.
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Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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italic
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Highlights important notes, introduces special terminology, denotes
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internal cross-references, and citations.
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< and >
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Enclose replaceable terms for assembler syntax where they appear in
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code or code fragments. For example:
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LDRSB<cond> <Rt>, [<Rn>, #<offset>]
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bold
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Highlights interface elements, such as menu names. Denotes signal
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names. Also used for terms in descriptive lists, where appropriate.
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monospace
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Denotes text that you can enter at the keyboard, such as commands,
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file and program names, and source code.
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monospace
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Denotes a permitted abbreviation for a command or option. You can
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enter the underlined text instead of the full command or option name.
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monospace italic
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Denotes arguments to monospace text where the argument is to be
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replaced by a specific value.
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monospace bold
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Denotes language keywords when used outside example code.
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read/write (rw)
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Software can read and write to these bits.
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read-only (r)
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Software can only read these bits.
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write-only (w)
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Software can only write to this bit.
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Reading the bit returns the reset value.
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read/clear (rc_w1)
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Software can read as well as clear this bit by writing 1.
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Writing '0' has no effect on the bit value.
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read/clear (rc_w0)
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Software can read as well as clear this bit by writing 0.
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Writing '1' has no effect on the bit value.
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toggle (t)
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Software can only toggle this bit by writing '1'. Writing '0' has no effect.
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Reserved (Res.)
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Reserved bit, must be kept at reset value.
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> 原始图片：imgs/page_12_*.png（无图则注明无图）
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