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STR720 データシート(PDF) 322 Page - STMicroelectronics |
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STR720 データシート(HTML) 322 Page - STMicroelectronics |
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322 / 401 page  STR720 - EXTENDED FUNCTION TIMER (EFT) 322/401 – When OCBR = OCAR, a square waveform with 50% duty cycle will be generated as in Figure 54. – When OCBR and OCAR are loaded with FFFC (the counter reset value) then a square wave- form will be generated & the counter will remain stuck at FFFC. The period will be calculated using the following formula: – When OCAR is loaded with FFFC (the counter reset value) then the waveform will be gen- erated as in Figure 54. – When FOLVA bit is set and PWM bit is set, then PWM mode is the active one. But if FOLVB bit is set then the OLVLB bit will appear on OCMPB (when OCBE bit = 1). – When a write is performed on CNTR register in PWM mode, then the Counter will be reset and the pulse-width/period of the waveform generated may not be as desired. Period t CPU PRESC 1 + () OCBR 1 + () ⋅⋅ = 1 |
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