Differences

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

--- stm32:peripherals:pwr [2016/06/07 07:14] – feur
+++ stm32:peripherals:pwr [2022/12/27 18:58] (current) – [PWR→CR] ruan
@@ Line 1: / Line 1: @@
-:!: Incomplete
 ====== Power Controller ======
@@ Line 16: / Line 15: @@
 \\
-===== Programming Example =====
+===== Low Power Modes =====
+The following low power modes are vailable:
+  * The [[pwr_sleep|SLEEP]] mode offers some power reduction and fast wake up times.
+  * The [[pwr_stop|STOP]] mode offers more power reduction, at the cost of a slower wake up times.
+  * The [[pwr_standby|STANDBY]] (and VBAT) mode saves the most energy, at the cost of an even slower wake up time.
+The power reduction is accomplished by switching off different parts of the hardware. \\
+Which part is available in which mode is shown in the tables below. \\
 \\
-> {{logo_hal.svg?72px |}} **Hardware Abstraction Layer**
+=== Clocks ===
-> [[https://ennis.zhaw.ch/hal/structreg__pwr__t.html | Registry Types]]
-> [[https://ennis.zhaw.ch/hal/hal__pwr_8h.html | InES PWR HAL Interface]]
+|< 45em 15em 10em >|
+| ^  SLEEP  ^  STOP  ^  STANDBY  |
+^ CPU clock |  disabled  |  disabled  |  disabled  |
+^ Peripheral clocks |  on / off  |  on / off  |  disabled  |
+^ RTC clock |  on / off  |  on / off  |  on / off  |
 \\
-===== Configuration Registers =====
+=== Clock Sources ===
-==== CR ====
+|< 45em 15em 10em >|
+| ^  SLEEP  ^  STOP  ^  STANDBY  |
+^ Low Speed (Int. / Ext.) |  on / off  |  on / off  |  on / off  |
+^ High Speed (Int. / Ext.) |  on / off  |  disabled  |  disabled  |
+^ PLL Oscillator |  on / off  |  disabled  |  disabled  |
+\\
+=== Voltage Regulators ===
+|< 45em 15em 10em >|
+| ^  SLEEP  ^  STOP  ^  STANDBY  |
+^ Flash Power Down |  disabled  |  on / off  |  disabled  |
+^ 1,2V Domain (Normal) |  Main  |  Main \\ or \\ Low Power  |  disabled  |
+^ 1,2V Domain (Underdrive)* |  disabled  |:::|  disabled  |
+^ Backup Domain |  on / off  |  on / off  |  on / off  |
+* Underdrive mode of 1,2V domain voltage regulator only possible if Flash power down enabled. \\
+\\
+=== SRAM / Registers ===
+|< 45em 15em 10em >|
+| ^  SLEEP  ^  STOP  ^  STANDBY  |
+^ Regular SRAM |  on  |  on  |  disabled  |
+^ Regular Registers |  on  |  on  |  disabled  |
+^ Backup SRAM |  on / off  |  on / off  |  on / off  |
+^ Backup Registers |  on / off  |  on / off  |  on / off  |
+\\
+===== Configuration Registers =====
-Configuration register
+==== PWR→CR - Configuration register ====
 \\ {{power_reg_cr.svg}} \\ \\