From 7a400b065167beda0a1a9c642954e08581bc0c29 Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Wed, 4 Apr 2012 16:57:45 -0400 Subject: Add notes/stm32.txt. Some general notes on the various STM32 series. Signed-off-by: Marti Bolivar --- notes/stm32.txt | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 notes/stm32.txt (limited to 'notes') diff --git a/notes/stm32.txt b/notes/stm32.txt new file mode 100644 index 0000000..106b369 --- /dev/null +++ b/notes/stm32.txt @@ -0,0 +1,63 @@ +STM32 platform notes. + +Most of this information comes from ST AN3427 (Migrating a +microcontroller application from STM32F1 to STM32F2 series) and ST +AN3364 (How to migrate across STM32 series). + +The STM32 series of MCUs is divided into series. At time of writing, +the available series are: + +- F1 series (STM32F1) +- L1 series (STM32L1) +- F2 series (STM32F2) +- F4 series (STM32F4) + +Some notes on the characteristics of, and differences between, the +series follow. + +F1 Series +--------- + +The STM32F1 series is further subdivided into a variety of somewhat +compatible "lines". Performance, value, and connectivity line MCUs are +available. (There's also an access line, which is ignored in these +notes). + +At time of writing, libmaple supports medium- and high-density +performance line MCUs. work to port it to other series is ongoing. + +Performance line MCU part numbers begin with STM32F101 or +STM32F103. The performance line is further subdivided into +"densities": low, medium, high, and XL. + +Value line MCU part numbers begin with STM32F100. Similarly to the +performance line, the value line is subdivided into medium and high +densities. + +Connectivity line MCU part numbers begin with STM32F105 or +STM32F107. Mercifully, these are not further subdivided by density. + +F2 Series +--------- + +A revamp of the F1 series, The F2 series address a number of the +STM32F1's deficiencies (both silicon bugs and unfortunate design +decisions), while maintaining a fair amount of software and pin +compatibility. + +The F2 series is most similar to the F1 connectivity line. Like the +connectivity line, STM32F2s come with a USB on-the-go full speed +peripheral (like the connectivity line), instead of USB full speed +device (like the performance line). + +F4 Series +--------- + +The F4 series MCUs are essentially equivalent to those in the F2 +series, except they have an ARM Cortex M4 core, an FPU, and support a +higher clock frequencies (168 MHz instead of 120 MHz). + +L1 Series +--------- + +This series is intended for low-power applications. -- cgit v1.2.3