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EM357-RTR датащи(PDF) 222 Page - Silicon Laboratories |
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EM357-RTR датащи(HTML) 222 Page - Silicon Laboratories |
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222 / 241 page ![]() 222 Rev 1.3 42 PB6 I/O High current Digital I/O ADC1 Analog ADC Input 1 Enable analog function with GPIO_PBCFGH[11:8] IRQB I External interrupt source B TIM1C1 O Timer 1 channel 1 output Enable timer output in TIM1_CCER Select alternate output function with GPIO_PBCFGH[11:8] TIM1C1 I Timer 1 channel 1 input Cannot be remapped 43 PB5 I/O Digital I/O ADC0 Analog ADC Input 0 Enable analog function with GPIO_PBCFGH[7:4] TIM2CLK I Timer 2 external clock input TIM1MSK I Timer 1 external clock mask input 44 VDD_CORE Power 1.25 V digital core supply decoupling 45 VDD_PRE Power 1.8 V prescaler supply 46 VDD_SYNTH Power 1.8 V synthesizer supply 47 OSCB I/O 24 MHz crystal oscillator or left open when using external clock input on OSCA 48 OSCA I/O 24 MHz crystal oscillator or external clock input. (An external clock input should only be used for test and debug purposes. If used in this manner, the external clock input should be a 1.8 V, 50% duty cycle, square wave.) 49 GND Ground Ground supply pad in the bottom center of the package forms Pin 49. See the various Ember EM35x Reference Design documentation for PCB con- siderations. Table 19.1. EM35x Pin Descriptions (Continued) Pin # Signal Direction Description |
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