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COP8SGC528M3 数据表(PDF) 24 Page - National Semiconductor (TI) |
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COP8SGC528M3 数据表(HTML) 24 Page - National Semiconductor (TI) |
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24 / 62 page ![]() 6.0 Timers (Continued) 6.3 TIMER CONTROL FLAGS The control bits and their functions are summarized below. TxC3 Timer mode control TxC2 Timer mode control TxC1 Timer mode control TxC0 Timer Start/Stop control in Modes 1 and 2 (Pro- cessor Independent PWM and External Event Counter), where 1 = Start, 0 = Stop Timer Underflow Interrupt Pending Flag in Mode 3 (Input Capture) TxPNDA Timer Interrupt Pending Flag TxENA Timer Interrupt Enable Flag 1 = Timer Interrupt Enabled 0 = Timer Interrupt Disabled TxPNDB Timer Interrupt Pending Flag TxENB Timer Interrupt Enable Flag 1 = Timer Interrupt Enabled 0 = Timer Interrupt Disabled The timer mode control bits (TxC3, TxC2 and TxC1) are detailed below: Mode TxC3 TxC2 TxC1 Description Interrupt A Source Interrupt B Source Timer Counts On 1 1 0 1 PWM: TxA Toggle Autoreload RA Autoreload RB t C 1 0 0 PWM: No TxA Toggle Autoreload RA Autoreload RB t C 2 0 0 0 External Event Counter Timer Underflow Pos. TxB Edge Pos. TxA Edge 0 0 1 External Event Counter Timer Underflow Pos. TxB Edge Pos. TxA Edge 3 0 1 0 Captures: Pos. TxA Edge Pos. TxB Edge t C TxA Pos. Edge or Timer TxB Pos. Edge Underflow 1 1 0 Captures: Pos. TxA Neg. TxB t C TxA Pos. Edge Edge or Timer Edge TxB Neg. Edge Underflow 0 1 1 Captures: Neg. TxA Neg. TxB t C TxA Neg. Edge Edge or Timer Edge TxB Neg. Edge Underflow 1 1 1 Captures: Neg. TxA Neg. TxB t C TxA Neg. Edge Edge or Timer Edge TxB Neg. Edge Underflow www.national.com 24 |
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