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TRF7961RHBT Datasheet(PDF) 7 Page - Texas Instruments |
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TRF7961RHBT Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 54 page  7 TRF7960, TRF7961 www.ti.com SLOU186G – AUGUST 2006 – REVISED MAY 2017 Submit Documentation Feedback Product Folder Links: TRF7960 TRF7961 Terminal Configuration and Functions Copyright © 2006–2017, Texas Instruments Incorporated Table 4-1. Signal Descriptions (continued) TERMINAL TYPE(1) DESCRIPTION NAME NO. MOD 14 INP Direct mode, external modulation input VSS_A 15 SUP Negative supply for internal analog circuits; normally connected to circuit ground VDD_I/O 16 SUP Supply for I/O communications (1.8 V to 5.5 V). Should be connected to VIN for 5-V communication, VDD_X for 3.3-V communication, or any other voltage from 1.8 V to 5.5 V. I/O_0 17 BID I/O pin for parallel communication I/O_1 18 BID I/O pin for parallel communication I/O_2 19 BID I/O pin for parallel communication I/O_3 20 BID I/O pin for parallel communication I/O_4 21 BID I/O pin for parallel communication I/O_5 22 BID I/O pin for parallel communication Strobe out clock for serial communication Data clock output in direct mode I/O_6 23 BID I/O pin for parallel communication MISO for serial communication (SPI) Serial bit data output in direct mode 1 or subcarrier signal in direct mode 0 I/O_7 24 BID I/O pin for parallel communication. MOSI for serial communication (SPI) EN2 25 INP Pulse enable and selection of power-down mode. If EN2 is connected to VIN, then VDD_X is active during power down to support the MCU. Pin can also be used for pulse wake up from power-down mode. DATA_CLK 26 INP Clock input for MCU communication (parallel and serial) SYS_CLK 27 OUT Clock for MCU (3.39 / 6.78 / 13.56 MHz) at EN = 1 and EN2 = don't care If EN = 0 and EN2 = 1, then system clock is set to 60 kHz EN 28 INP Chip enable input (If EN = 0, then chip is in power-down mode.) VSS_D 29 SUP Negative supply for internal digital circuits; normally connected to circuit ground OSC_OUT 30 OUT Crystal oscillator output OSC_IN 31 INP Crystal oscillator input VDD_X 32 OUT Internally regulated supply (2.7 V to 3.4 V) for external circuitry (MCU) Thermal Pad Connected to circuit ground |
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