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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STM32W108HB 데이터시트(PDF) 55 Page - STMicroelectronics |
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STM32W108HB 데이터시트(HTML) 55 Page - STMicroelectronics |
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55 / 278 page  STM32W108HB STM32W108CC STM32W108CB STM32W108CZ System modules Doc ID 16252 Rev 14 55/278 Clock period control register (CLK_PERIODCR) Address: 0x4000 4010 Reset value: 0x0000 0000 Reserved, must be kept at reset value MODE[1:0]: Sets the clock to be measured by CLK_PERIOD Clock period status register (CLK_PERIODSR) Address: 0x4000 4014 Reset value: 0x0000 0000 Reserved, must be kept at reset value PERIOD[15:0]: Measures the number of 12-MHz clock cycles in 16 or 256 periods (depending on the MODE bits in the CLK_PERIODCR register) of the selected clock. 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Reserved 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Reserved MODE[1:0] rw rw Bits [31:2] Bit [1:0] 3: Not used 2: Measures TUNE_FILTER_RESULT 1: Measures HSI 0: Measures LSI 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 Reserved 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 PERIOD[15:0] r r r r r r r r rr rr rr r r Bits [31:16] Bit [15:0] 16 x 12 MHz clock period in LSI10K mode or 256 x 12 MHz clock period in HSI mode. |
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