Basic timers (TIM6/TIM7) RM0444
702/1390 RM0444 Rev 5
23 Basic timers (TIM6/TIM7)
23.1 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.
23.2 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 65535
• Synchronization circuit to trigger the DAC
• Interrupt/DMA generation on the update event: counter overflow
Figure 211. Basic timer block diagram
MS33142V1
Internal clock (CK_INT)
Auto-reload register
CNT counter
+
CK_PSC
CK_CNT
Stop, clear or up
UI
U
U
Notes:
Reg
Preload registers transferred
to active registers on U event
according to control bit
Event
Interrupt & DMA output
PSC
prescaler
Trigger
controller
Reset, enable, Count
TIMxCLK from RCC
TRGO
to DAC
Control
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