Documentation Conventions; General Information; List Of Abbreviations For Registers; Glossary - ST STM32F207 Series Reference Manual

Documentation conventions

1 Documentation conventions
1.1

General information

The STM32F205xx, STM32F207xx, STM32F215xx and STM32F217xx devices have an
®(a)
Arm Cortex
1.2

List of abbreviations for registers

The following abbreviations are used in register descriptions:
read/write (rw)
read-only (r)
write-only (w)
read/clear (rc_w1) Software can read as well as clear this bit by writing 1. Writing '0' has
read/clear (rc_w0) Software can read as well as clear this bit by writing 0. Writing '1' has
read/clear by read
(rc_r)
read/set (rs)
read-only write
trigger (rt_w)
toggle (t)
Reserved (Res.)
1.3

Glossary

•
Word: data of 32-bit length.
•
Half-word: data of 16-bit length.
•
Byte: data of 8-bit length.
a. Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
46/1381
®
-M3 core.
Software can read and write to these bits.
Software can only read these bits.
Software can only write to this bit. Reading the bit returns the reset
value.
no effect on the bit value.
no effect on the bit value.
Software can read this bit. Reading this bit automatically clears it to '0'.
Writing '0' has no effect on the bit value.
Software can read as well as set this bit. Writing '0' has no effect on the
bit value.
Software can read this bit. Writing '0' or '1' triggers an event but has no
effect on the bit value.
Software can only toggle this bit by writing '1'. Writing '0' has no effect.
Reserved bit, must be kept at reset value.
RM0033 Rev 9
RM0033