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RM0312 датащи(PDF) 155 Page - STMicroelectronics |
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RM0312 датащи(HTML) 155 Page - STMicroelectronics |
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155 / 275 page ![]() DocID022352 Rev 3 155/275 RM0312 16-bit general purpose timer (TIM2/TIM3) 170 17.7.12 Counter high (TIMx_CNTRH) Address offset: 0x0B Reset value: 0x00 17.7.13 Counter low (TIMx_CNTRL) Address offset: 0x0C Reset value: 0x00 17.7.14 Prescaler register (TIMx_PSCR) Address offset: 0x0D Reset value: 0x00 7 654 3210 CNT[15:8] rw Bits 7:0 CNT[15:8]: Counter value (MSB) 7 654 3210 CNT[7:0] rw Bits 7:0 CNT[7:0]: Counter value (LSB) 7 654 3210 Reserved PSC[2:0] rw Bits 7:3 Reserved Bits 2:0 PSC[2:0]: Prescaler value The prescaler value divides the CK_PSC clock frequency. The counter clock frequency fCK_CNT is equal to fCK_PSC / 2(PSC[2:0]). PSC[7:3] are forced to 0 by hardware. PSCR contains the value which will be loaded in the active prescaler register at each update event (including when the counter is cleared through UG bit of TIMx_EGR register). This means that an update event must be generated in order that a new prescaler value can be taken into account. |
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