Memelabs

User Tools

Site Tools

Trace:
stm32

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
Next revisionBoth sides next revision
stm32 [2009/06/14 03:05] – memeruizstm32 [2011/11/03 13:04] – XAZuniIKAuZWqb 207.151.36.229
Line 1: Line 1:
-====== STM32 ====== +lCnXvt , [url=http://gginidujxkkb.com/]gginidujxkkb[/url], [link=http://jvjpvrmgultn.com/]jvjpvrmgultn[/link], http://ovffuxximynk.com/
-Important facts about the stm32 in general and for programming it +
- +
-  * Multiple external pins can be associated to interrupts +
-  * Clock must be initialized by software. The stm32 is able to detect a failure of the external clock and fall-back on the internal clock and issue an interrupt. Connect this to a red led! Blink a special pattern to indicate this condition. Use time measurement that adjust to the different cpu clocks by reading from the clock source register? +
- +
-  * Booting pins working not clear +
-  * Reset circuitry not necessary, is already included. It can generate interrupts if voltage goes down. The voltage threshold must be configured. Check PVD. +
-  * Standby mode. SRAM and register information gets lost. +
-  * DMA supports circular buffers automatically +
-  * TIM1 (advance timer) can do 0-100% PWM 4+3complementary +
-  * TIMx (3 normal timers) 4 PWMs +
-  * Timer Link allows synchronization between timers. +
-  * Watchdog can operate as a normal independent timer. +
-  * SysTick timer can operate as a normal timer. +
-  * Two Spis operate up to 18Mbits/s +
-  * GPIOs can do output push-pull and open-drain, input can do pull-up-down,tristate. Analog inputs are not high current, the rest are. 18MHz toggling speed. +
-  * Two ADC. 16 channels. Automatic conversion over a group of channels. Watchdog threshold, can generate an interrupt. ADC conversion triggering can be connected to timers and DMA. Termometer connected to ADC12_in16. +
-  * There must be multiple rail capacitors. Take a look on Figure 12. stm32 medium density pdf. +
-  * Each I/O pin hold 25mA ABS max, 8mA nom and sink 20mA nom output current.  +
-  * For enable prefetching, clock setting and bus prescaling must be previously configured +
-  * Disabling peripherals is good for current consumption. +
-  * Flash uses two wait states. Maybe running code from SRAM could be good. +
-  * Reducing CPU operating frequency reduces current consumption proportionally +
-  * Sleep mode helps significantly when peripherals are disabled. +
-  * Stop and Standby mode are in the uA order. +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
- +
stm32.txt · Last modified: 2021/02/01 05:55 by 127.0.0.1