Difference between revisions of "STMicro microcontroller families"
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| − | == 16-bit Microcontrollers == | + | == Features and Terms To Investigate == |
| + | |||
| + | * Bit banding . . . what is this? | ||
| + | An excerpt from STM32F413-423 datasheet, page 63: | ||
| + | <i> | ||
| + | <pre> | ||
| + | Example | ||
| + | The following example shows how to map bit 2 of the byte located at SRAM1 address | ||
| + | 0x20000300 to the alias region: | ||
| + | 0x22006008 = 0x22000000 + (0x300*32) + (2*4) | ||
| + | Writing to address 0x22006008 has the same effect as a read-modify-write operation on bit | ||
| + | 2 of the byte at SRAM1 address 0x20000300. | ||
| + | Reading address 0x22006008 returns the value (0x01 or 0x00) of bit 2 of the byte at SRAM1 | ||
| + | address 0x20000300 (0x01: bit set; 0x00: bit reset). | ||
| + | For more information on bit-banding, refer to the Cortex®-M4 with FPU programming | ||
| + | manual (see Related documents on page 1 | ||
| + | </pre> | ||
| + | </i> | ||
| + | |||
| + | == [[#top|^]] Asides == | ||
| + | |||
| + | Following sub-sections hold links to external references, to explore at a later time . . . | ||
| + | |||
| + | === [[#top|^]] 16-bit Microcontrollers === | ||
Had heard of sixteen bit microcontrollers, but interesting to find that STMicro manufactures one. There is only one such bit-width part on STMicro's site, and it is not recommended for new designs. Link here: | Had heard of sixteen bit microcontrollers, but interesting to find that STMicro manufactures one. There is only one such bit-width part on STMicro's site, and it is not recommended for new designs. Link here: | ||
Revision as of 18:54, 6 July 2021
- OVERVIEW -
This wiki page a stash point for comparative notes on contemporary, cerca 2020 microcontroller families. First comparisons looking at ARM Cortex-M0 and Cortex-M4 class parts. Search may extend to other architectures, depending on low power abilities of parts and availabilities.
Contents
^ STMicro
Processors from two families to investigate:
- STM32F427/437 – serial audio interface, more performance and lower static power consumption
- STM32F410 – New milestone in outstanding power efficiency (89 µA/MHz and 6 µA in Stop mode), true random number generator, low-power timer, and DAC.
- STM32F413/F423 – Extends STM32F412 features with higher RAM and Flash memory density and an enhanced peripheral set including 10 UARTs, 3 CANs, SAI interface, a low-power timer, 2 DACs, 2 DFSDM with up to 6 filters. The STM32F423 includes AES encryption.
^ NXP/Freescale
This section a stub section to hold notes regarding NXP family microcontrollers.
Features and Terms To Investigate
- Bit banding . . . what is this?
An excerpt from STM32F413-423 datasheet, page 63:
Example The following example shows how to map bit 2 of the byte located at SRAM1 address 0x20000300 to the alias region: 0x22006008 = 0x22000000 + (0x300*32) + (2*4) Writing to address 0x22006008 has the same effect as a read-modify-write operation on bit 2 of the byte at SRAM1 address 0x20000300. Reading address 0x22006008 returns the value (0x01 or 0x00) of bit 2 of the byte at SRAM1 address 0x20000300 (0x01: bit set; 0x00: bit reset). For more information on bit-banding, refer to the Cortex®-M4 with FPU programming manual (see Related documents on page 1
^ Asides
Following sub-sections hold links to external references, to explore at a later time . . .
^ 16-bit Microcontrollers
Had heard of sixteen bit microcontrollers, but interesting to find that STMicro manufactures one. There is only one such bit-width part on STMicro's site, and it is not recommended for new designs. Link here:
