Figure 203. Basic Timer Block Diagram; Basic Timers (Tim6&Tim7) - STMicroelectronics STM32F405 Reference Manual

Basic timers (TIM6&TIM7)
20 Basic timers (TIM6&TIM7)
This section applies to the whole STM32F4xx family, unless otherwise specified.
20.1 TIM6&TIM7 introduction
The basic timers TIM6 and TIM7 consist of a 16-bit auto-reload counter driven by a
programmable prescaler.
They may be used as generic timers for time-base generation but they are also specifically
used to drive the digital-to-analog converter (DAC). In fact, the timers are internally
connected to the DAC and are able to drive it through their trigger outputs.
The timers are completely independent, and do not share any resources.
20.2 TIM6&TIM7 main features
Basic timer (TIM6&TIM7) features include:
• 16-bit auto-reload upcounter
•
16-bit programmable prescaler used to divide (also "on the fly") the counter clock
frequency by any factor between 1 and 65536
•
Synchronization circuit to trigger the DAC
•
Interrupt/DMA generation on the update event: counter overflow
Flag
688/1731

Figure 203. Basic timer block diagram

TIMxCLK from RCC
CK_PSC
PSC
Prescaler
Preload registers transferred
to active registers on U event according to control bit
event
interrupt & DMA output
DocID018909 Rev 11
Internal clock (CK_INT)
controller
Controller
U
Auto-reload Register
Stop, Clear or up
CK_CNT
CNT
±
COUNTER
TRGO
Trigger
to DAC
Reset, Enable, Count,
UI
U
RM0090
ai14749b