ST STM32F446 Series

Basic timers (TIM6&TIM7) RM0390
638/1328 RM0390 Rev 4
19.4.7 TIM6&TIM7 prescaler (TIMx_PSC)
Address offset: 0x28
Reset value: 0x0000
19.4.8 TIM6&TIM7 auto-reload register (TIMx_ARR)
Address offset: 0x2C
Reset value: 0x0000
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PSC[15:0]
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Bits 15:0 PSC[15:0]: Prescaler value
The counter clock frequency CK_CNT is equal to f
CK_PSC
/ (PSC[15:0] + 1).
PSC contains the value to be loaded into the active prescaler register at each update event.
1514131211109876543210
ARR[15:0]
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Bits 15:0 ARR[15:0]: Auto-reload value
ARR is the value to be loaded into the actual auto-reload register.
Refer to Section 19.3.1: Time-base unit on page 629 for more details about ARR update and
behavior.
The counter is blocked while the auto-reload value is null.