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SN250 数据表(PDF) 11 Page - STMicroelectronics |
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SN250 数据表(HTML) 11 Page - STMicroelectronics |
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11 / 130 page ![]() SN250 Pin assignment 11/130 41 GPIO15 I/O Digital I/O (enable GPIO15 with GPIO_CFG[2]) TMR1OA O Waveform Output A of Timer 1 (enable TMR1OA with GPIO_CFG[2]) TMR2IA.3 I Capture Input A of Timer 2 (enable CAP2-2 with GPIO_CFG[7:4]) IRQC I External interrupt source C 42 GPIO14 I/O Digital I/O (enable GPIO14 with GPIO_CFG[1]) TMR2OB O Waveform Output B of Timer 2 (enable TMR2OB with GPIO_CFG[1]) TMR1IB.3 I Capture Input B of Timer 1 (enable CAP1-2 with GPIO_CFG[7:4]) IRQB I External interrupt source B 43 GPIO13 I/O Digital I/O (enable GPIO13 with GPIO_CFG[0]) TMR2OA O Waveform Output A of Timer 2 (enable TMR2OA with GPIO_CFG[0]) TMR1IA.3 I Capture Input A of Timer 1 (enable CAP1-2 or CAP1-2h with GPIO_CFG[7:4]) 44 VDD_CORE Power 1.8V digital core supply 45 VDD_PRE Power 1.8V prescaler supply 46 VDD_SYNTH Power 1.8V synthesizer supply 47 OSCB I/O 24MHz crystal oscillator or left open when using external clock input on OSCA 48 OSCA I/O 24MHz crystal oscillator or external clock input 49 GND Ground Ground supply pad in the bottom center of the package forms Pin 49 (see the SN250 Reference Design for PCB considerations) Table 1. Pin descriptions (continued) Pin # Signal Direction Description |
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