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CC2642R1FRGZR Datasheet(PDF) 8 Page - Texas Instruments |
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CC2642R1FRGZR Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 45 page  8 CC2642R SWRS194 – JANUARY 2018 www.ti.com Submit Documentation Feedback Product Folder Links: CC2642R Terminal Configuration and Functions Copyright © 2018, Texas Instruments Incorporated Table 4-1. Signal Descriptions – RGZ Package (continued) PIN TYPE DESCRIPTION NAME NO. (4) If internal DC/DC converter is not used, this pin must be connected to VDDR for supply from the main LDO. VDDR_RF 48 Power 1.7-V to 1.95-V supply, typically connect to output of internal DC/DC converter(4)(2) VDDS 44 Power 1.8-V to 3.8-V main chip supply(1) VDDS2 13 Power 1.8-V to 3.8-V DIO supply(1) VDDS3 22 Power 1.8-V to 3.8-V DIO supply(1) VDDS_DCDC 34 Power 1.8-V to 3.8-V DC/DC converter supply X48M_N 46 Analog I/O 48-MHz crystal oscillator pin 1 X48M_P 47 Analog I/O 48-MHz crystal oscillator pin 2 X32K_Q1 3 Analog I/O 32-kHz crystal oscillator pin 1 X32K_Q2 4 Analog I/O 32-kHz crystal oscillator pin 2 (1) NC = No connect (2) When the DC/DC converter is not used, the inductor between DCDC_SW and VDDR can be removed. However, the VDDR decoupling capacitor must still be connected as shown in reference designs. 4.3 Connections for Unused Pins Table 4-2. Connections for Unused Pins(1) FUNCTION SIGNAL NAME PIN NUMBER ACCEPTABLE PRACTICE PREFERRED PRACTICE GPIO DIO_n 5–12 14–21 26–32 36–43 NC GND 32.768-kHz crystal X32K_Q1 X32K_Q2 3–4 NC NC DC/DC converter(2) DCDC_SW 33 NC NC VDDR 45 Connect to VDDR_RF Connect to VDDR_RF VDDR_RF 48 Connect to VDDR Connect to VDDR VDDS_DCDC 34 Connect to VDDS Connect to VDDS |
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