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NRF51822-CFAB-R 数据表(PDF) 15 Page - Nordic Semiconductor |
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NRF51822-CFAB-R 数据表(HTML) 15 Page - Nordic Semiconductor |
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15 / 130 page ![]() Page 15 nRF51822 Product Specification v3.3 2.2.2.1 Ball functions CDAB Ball Name Function Description A1 AVDD Power Analog power supply (Radio). A2 XC1 Analog input Crystal connection for 16/32 MHz crystal oscillator or external 16/32 MHz crystal reference. A3 XC2 Analog output Crystal connection for 16/32 MHz crystal. A4 DEC1 Power Power supply decoupling. A5 P0.21 Digital I/O General purpose I/O. A6 P0.24 Digital I/O General purpose I/O. A7 P0.26 AIN0 XL2 Digital I/O Analog input Analog output General purpose I/O. ADC input 0. Crystal connection for 32.768 kHz crystal oscillator. A8 P0.27 AIN1 XL1 Digital I/O Analog input Analog input General purpose I/O. ADC input 1. Crystal connection for 32.768 kHz crystal oscillator or external 32.768 kHz crystal reference. B1 VSS Power Ground (0 V). B4 VSS Power Ground (0 V). B5 P0.22 Digital I/O General purpose I/O. B6 P0.23 Digital I/O General purpose I/O. B7 P0.28 Digital I/O General purpose I/O. B8 VDD Power Power supply. B9 DCC Power DC/DC output voltage to external LC filter. C1 ANT2 RF Differential antenna connection (TX and RX). C5 P0.25 Digital I/O General purpose I/O. C6 N.C. No Connection Must be soldered to PCB. C7 P0.29 Digital I/O General purpose I/O. C8 P0.30 Digital I/O General purpose I/O. C9 P0.00 AREF0 Digital I/O Analog input General purpose I/O. ADC Reference voltage. D1 ANT1 RF Differential antenna connection (TX and RX). D7 VSS Power Ground (0 V). D8 P0.31 Digital I/O General purpose I/O. D9 P0.02 AIN3 Digital I/O Analog input General purpose I/O. ADC input 3. E1 VDD_PA Power output Power supply output (+1.6 V) for on-chip RF power amp. E2 N.C. No Connection Must be soldered to PCB. E3 N.C. No Connection Must be soldered to PCB. E7 P0.01 AIN2 Digital I/O Analog input General purpose I/O. ADC input 2. E8 P0.04 AIN5 Digital I/O Analog input General purpose I/O. ADC input 5. |
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