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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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9202 数据表(PDF) 59 Page - STMicroelectronics |
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9202 数据表(HTML) 59 Page - STMicroelectronics |
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59 / 175 page  59/175 UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV Table 42. Timer/Counter2 Operating Modes Note: ↓ = falling edge Figure 25. Timer 2 in Capture Mode Mode T2CON T2MOD DECN T2CON EXEN P1.1 T2EX Remarks Input Clock RxCLK or TxCLK CP/ RL2 TR2 Internal External (P1.0/T2) 16-bit Auto- reload 0 0 1 0 0 x reload upon overflow fOSC/12 MAX fOSC/24 00 1 0 1 ↓ reload trigger (falling edge) 0 0 1 1 x 0 Down counting 0 0 1 1 x 1 Up counting 16-bit Capture 01 1 x 0 x 16-bit Timer/Counter (only up counting) fOSC/12 MAX fOSC/24 01 1 x 1 ↓ Capture (TH1,TL2) → (RCAP2H,RCAP2L) Baud Rate Generator 1x 1 x 0 x No overflow interrupt request (TF2) fOSC/12 MAX fOSC/24 1x 1 x 1 ↓ Extra External Interrupt (Timer 2) Off x x 0 x x x Timer 2 stops — — AI06625 fOSC TF2 Capture TR2 T2 pin Control TL2 (8 bits) TH2 (8 bits) C/T2 = 0 C/T2 = 1 ÷ 12 EXP2 Control EXEN2 RCAP2L RCAP2H T2EX pin Timer 2 Interrupt Transition Detector |
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