CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 System-on-Chip for 2.4-GHz USB Applications FEATURES 1 • • • RF section – Single-Chip 2.4-GHz RF Transceiver and MCU – Data Rates and Modulation Formats: – 2-Mbps GFSK, 320-kHz Deviation – 2-Mbps GFSK, 500-kHz Deviation – 1-Mbps GFSK, 160-kHz Deviation – 1-Mbps GFSK, 250-kHz Deviation – 500-kbps MSK – 250-kbps GFSK, 160-kHz Deviation – 250-kbps MSK – Excellent Link Budget, Enabling Long Range Without External Front-Ends – Programmable Output Power up to 4 dBm – Excellent Receiver Sensitivity (–88 dBm at 2 Mbps) – Suitable for Systems Targeting Compliance With Worldwide Radio Frequency Regulations: ETSI EN 300 328 and EN 300 440 Category 2 (Europe), FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan) – Accurate RSSI Function Layout – Few External Components – Reference Designs Available – 32-pin 5-mm × 5-mm QFN (8 General I/O Pins) Package Low Power – Active Mode RX: 22.5 mA – Active Mode TX (0 dBm): 27 mA – Power Mode 1 (4-µs Wake-Up): 1 mA – Wide Supply-Voltage Range – 3.3V LDO Output – Supply Range: 2 V–3.6 V – USB 5-V Regulator: 4 V–5.45 V • • Microcontroller – High-Performance and Low-Power 8051 Microcontroller Core With Code Prefetch – 32-KB Flash Program Memory – 2 KB SRAM – Hardware Debug Support – Extensive Baseband Automation, Including Auto-Acknowledgement and Address Decoding Peripherals – Full Speed USB 2.0 – 6 Endpoints (Endpoint 0 and 5 IN/OUT Endpoints) – Internal Pullup for D+ – 5-V to 3.3-V Regulator – Powerful Two-Channel DMA – General-Purpose Timers (One 16-Bit, Two 8-Bit) – Radio Timer, 40-Bit – IR Generation Circuitry – Several Oscillators: – 32-MHz XOSC – 16-MHz RCOSC – 32-kHz RCOSC – 32-kHz Sleep Timer With Capture – AES Security Coprocessor – UART/SPI Serial Interface – 8 General-Purpose I/O pins (6 × 4-mA and 2 × 20-mA Drive Strength) – Watchdog Timer – True Random-Number Generator APPLICATIONS • • • Proprietary 2.4-GHz Systems Human Interface Devices (USB Dongle) Consumer Electronics 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011–2012, Texas Instruments Incorporated CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. DESCRIPTION The CC2544 is an optimized system-on-chip (SoC) solution for USB applications with datarates upto 2Mbps built with low bill-of-material cost. The CC2544 combines the excellent performance of a leading RF transceiver with a single-cycle 8051 compliant CPU, 32-KB in-system programmable flash memory, up to 2-KB RAM, and many other powerful features. The CC2544 is compatible with the CC2541/CC2543/CC2545. It comes in a 5-mm × 5-mm QFN32 package, with SPI/UART/USB interface. The CC2544 comes complete with reference designs from Texas Instruments. The devices target wireless consumer and HID applications. The CC2544 is ideal for USB dongle applications. For block diagram, see Figure 7 ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS Supply voltage VBUS Supply voltage VDD All supply pins must have the same voltage Voltage on any digital pin MIN MAX UNIT –0.3 5.5 V –0.3 ≤3.9 V –0.3 ≤3.9 V 10 dBm 125 °C 2 kV 750 V Input RF level Storage temperature range ESD (1) (2) –40 All pins, according to human-body model, JEDEC STD 22, method A114 (HBM) (2) According to charged-device model, JEDEC STD 22, method C101 (CDM) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. CAUTION: ESD sensitive device. Precautions should be used when handing the device in order to prevent permanent damage. RECOMMENDED OPERATING CONDITIONS PARAMETER TEST CONDITIONS Operating ambient temperature range, TA MIN MAX UNIT –40 85 °C Operating supply voltage VBUS Optional to use this regulator 4 5.45 V Operating supply voltage VDD All supply pins must have same voltage 2 3.6 V 2 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 ELECTRICAL CHARACTERISTICS Measured on Texas Instruments CC2544EM reference design with TA = 25°C and VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 2 Mbps, GFSK, 320-kHz Deviation, 0.1% BER RX mode, no peripherals active, low MCU activity I core– Core current consumption 22.5 mA TX mode, 0-dBm output power, no peripherals active, low MCU activity 27 mA TX mode, 4-dBm output power, no peripherals active, low MCU activity 30 mA Active mode, 16-MHz RCOSC, Low MCU activity 4 mA Active mode, 32-MHz clock frequency, low MCU activity 7 mA Power mode 0, CPU clock halted, all peripherals on, no clock division, 32-MHz crystal selected 6 mA 3.5 mA Power mode 1. Digital regulator on; 16-MHz RCOSC and 32MHz crystal oscillator off; 32.753-kHz RCOSC, POR, BOD, and sleep timer active; RAM and register retention 1 mA Timer 1 (16-bit). Timer running, 32-MHz XOSC used 90 µA Radio timer(40 bit). Timer running, 32-MHz XOSC used 90 µA Timer 3 (8-bit). Timer running, 32-MHz XOSC used 60 µA Timer 4 (8-bit). Timer running, 32-MHz XOSC used 70 µA Sleep timer. Including 32.753-kHz RCOSC 0.6 µA Power mode 0, CPU clock halted, all peripherals on, clock division at max. (Limits max. speed in peripherals except radio), 32-MHz crystal selected I peri– Peripheral current consumption (Adds to core current Icore for each peripheral unit activated) GENERAL CHARACTERISTICS Measured on Texas Instruments CC2544EM reference design with TA = 25°C and VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT WAKE-UP AND TIMING Power mode 1 → Active Digital regulator on, 16-MHz RCOSC and 32-MHz crystal oscillator off. Start-up of 16-MHz RCOSC. Active → TX or RX 4 µs Crystal ESR = 16 Ω. Initially running on 16-MHz RCOSC, with 32-MHz XOSC OFF. 410 µs With 32-MHz XOSC initially on. 160 µs 130 µs RX/TX turnaround RADIO PART RF frequency range Programmable in 1-MHz steps Data rates and modulation formats 2 Mbps, GFSK 320-kHz deviation 2-Mbps, GFSK 500 kHz deviation 1-Mbps, GFSK 160 kHz deviation 1-Mbps, GFSK 250 kHz deviation 500 kbps, MSK 250 kbps, GFSK 160 kHz deviation 250 kbps, MSK 2380 2495 MHz Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 3 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com RF RECEIVE SECTION Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440 MHz, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 2 Mbps, GFSK, 320-kHz Deviation, 0.1% BER Receiver sensitivity –84 dBm 0 dBm Wanted signal at -67 dBm –15 dB ±2-MHz offset, wanted signal –67 dBm –5 ±4-MHz offset, wanted signal –67 dBm 30 ±6-MHz offset, wanted signal –67 dBm 40 >12-MHz offset, wanted signal –67 dBm 42 1-MHz resolution. Wanted signal –67 dBm, f < 2 GHz Two exception frequencies with poorer performance –35 1-MHz resolution. Wanted signal –67 dBm, 2 GHz > f < 3 GHz Two exception frequencies with poorer performance –36 1-MHz resolution. Wanted signal –67 dBm, f > 3GHz Two exception frequencies with poorer performance –12 Intermodulation Wanted signal –64 dBm, 1st interferer is CW, 2nd interferer is GFSK-modulated signal. Offsets of interferers are: 6 and 12 MHz 8 and 16 MHz 10 and 20 MHz –43 Frequency error tolerance (2) Including both initial tolerance and drift. Limit set to minimum sensitivity of –70dBm, 250K byte payload –300 300 kHz Symbol rate error tolerance (3) Limit set to minimum sensitivity of –70 dBm, 250K byte payload –120 120 ppm Saturation (1) Co-channel rejection In-band blocking rejection Out-of-band blocking rejection dB dBm dBm 2 Mbps, GFSK, 500-kHz Deviation, 0.1% BER Receiver sensitivity Saturation (1) Co-channel rejection In-band blocking rejection –88 dBm 3 dBm Wanted signal at -67 dBm -9 dB ±2-MHz offset, wanted signal –67 dBm -3 ±4-MHz offset, wanted signal –67 dBm 33 ±6-MHz offset, wanted signal –67 dBm 49 >12-MHz offset, wanted signal –67 dBm 40 dB Frequency error tolerance (2) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –300 300 kHz Symbol-rate error tolerance (3) Sensitivity better than –70 dBm. 250-byte payload –120 120 ppm 1 Mbps, GFSK, 250-kHz Deviation, 0.1% BER Receiver sensitivity -91 dBm 5 dBm Wanted signal at –67 dBm -6 dB ±2-MHz offset, wanted signal –67 dBm 28 ±4-MHz offset, wanted signal –67 dBm 31 ±6-MHz offset, wanted signal –67 dBm 40 >12-MHz offset, wanted signal –67 dBm 49 Saturation (1) Co-channel rejection In-band blocking rejection dB Frequency error tolerance (2) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –250 250 kHz Symbol-rate error tolerance (3) Sensitivity better than –70 dBm. 250-byte payload –80 80 ppm (1) (2) (3) 4 AGC enabled Difference between center frequency of the received RF signal and local oscillator frequency Difference between incoming symbol rate and the internally generated symbol rate Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 RF RECEIVE SECTION (continued) Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440 MHz, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 1 Mbps, GFSK, 160-kHz Deviation, 0.1% BER Receiver sensitivity -87 dBm 5 dBm Wanted signal at -67 dBm -9 dB ±2-MHz offset, wanted signal –67 dBm 26 ±4-MHz offset, wanted signal –67 dBm 30 ±6-MHz offset, wanted signal –67 dBm 40 >12-MHz offset, wanted signal –67 dBm 46 Saturation (1) Co-channel rejection In-band blocking rejection dB Frequency error tolerance (2) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –250 250 kHz Symbol-rate error tolerance (3) Sensitivity better than –70 dBm. 250-byte payload –80 80 ppm 500 kbps, MSK, 0.1% BER Receiver sensitivity -96 dBm 5 dBm Wanted signal at -67 dBm -5 dB ±2-MHz offset, wanted signal –67 dBm 31 ±4-MHz offset, wanted signal –67 dBm 31 ±6-MHz offset, wanted signal –67 dBm 45 >12-MHz offset, wanted signal –67 dBm 54 Saturation (4) Co-channel rejection In-band blocking rejection dB Frequency error tolerance (5) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –150 150 kHz Symbol-rate error tolerance (6) Sensitivity better than –70 dBm. 250-byte payload –60 60 ppm (4) (5) (6) AGC enabled Difference between center frequency of the received RF signal and local oscillator frequency Difference between incoming symbol rate and the internally generated symbol rate Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 5 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com RF RECEIVE SECTION (continued) Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440 MHz, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 250 kbps, GFSK, 160-kHz Deviation, 0.1% BER Receiver sensitivity -95 dBm 5 dBm Wanted signal at –67 dBm -9 dB ±2-MHz offset, wanted signal –67 dBm 31 ±4-MHz offset, wanted signal –67 dBm 31 ±6-MHz offset, wanted signal –67 dBm 55 >12-MHz offset, wanted signal –67 dBm 53 Saturation (7) Co-channel rejection In-band blocking rejection dB Frequency error tolerance (8) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –150 150 kHz Symbol-rate error tolerance (9) Sensitivity better than –70 dBm. 250-byte payload –60 60 ppm 250 kbps, MSK, 0.1% BER Receiver sensitivity –95 dBm 5 dBm Wanted signal at –67 dBm –5 dB ±2-MHz offset, wanted signal –67 dBm 31 ±4-MHz offset, wanted signal –67 dBm 31 ±6-MHz offset, wanted signal –67 dBm 45 >12-MHz offset, wanted signal –67 dBm 54 Saturation (7) Co-channel rejection In-band blocking rejection dB Frequency error tolerance (8) Including both initial tolerance and drift. Sensitivity better than –70 dBm. 250-byte payload –150 150 kHz Symbol-rate error tolerance (9) Sensitivity better than –70 dBm. 250-byte payload –60 60 ppm ALL RATES/FORMATS Spurious emission in RX. Conducted measurement f < 1 GHz –67 dBm Spurious emission in RX. Conducted measurement f > 1 GHz –57 dBm (7) (8) (9) AGC enabled Difference between center frequency of the received RF signal and local oscillator frequency Difference between incoming symbol rate and the internally generated symbol rate RF TRANSMIT SECTION Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, and fC = 2440 MHz, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Output power, maximum setting Delivered to a single-ended 50-Ω load through a balun using maximum recommended output power setting. 4 dBm Output power, minimum setting Delivered to a single-ended 50-Ω load through a balun using minimum recommended output power setting. –20 dBm Programmable output power range Delivered to a single-ended 50-Ω load through a balun. 24 dB Spurious emission in TX. Conducted measurement. f < 1 GHz –46 dBm Spurious emission in TX. Conducted measurement. f > 1 GHz –44 dBm Optimum load impedance Differential impedance as seen from the RF port (RF_P and RF_N) toward the antenna 70 + j30 Ω 6 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 32-MHz CRYSTAL OSCILLATOR Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP Crystal frequency MAX 32 Crystal frequency accuracy requirement 2-Mbps data rate UNIT MHz –60 60 ppm Equivalent series resistance 6 60 Ω Crystal shunt capacitance 1 7 pF Crystal load capacitance 10 16 Start-up time pF 0.25 The crystal oscillator must be in power down for a guard time before it is used again. This requirement is valid for all modes of operation. The need for power-down guard time can vary with crystal type and load. Power-down guard time ms 3 ms 32-kHz RC OSCILLATOR Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER Calibrated frequency TEST CONDITIONS MIN TYP (1) kHz ±0.2% Temperature coefficient (2) (3) Calibration time (4) (1) (2) (3) (4) UNIT 32.753 Frequency accuracy after calibration Supply-voltage coefficient MAX 0.4 %/ºC 3 %/V 2 ms The calibrated 32-kHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 977. Frequency drift when temperature changes after calibration Frequency drift when supply voltage changes after calibration The 32-kHz RC oscillator is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator is performed, while SLEEPCMD.OSC32K_CALDIS is set to 0. 16-MHz RC OSCILLATOR Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN Calibrated frequency TYP 16 Uncalibrated frequency accuracy ±18% Frequency accuracy after calibration (1) ±0.6% MAX UNIT MHz Start-up time 10 µs Initial calibration time 50 µs (1) The calibrated 16-MHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 2. Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 7 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com RSSI CHARACTERISTICS Measured on Texas Instruments CC2544 EM reference design with TA = 25°C and VDD = 3 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 2 Mbps, GFSK, 320-kHz Deviation, 0.1% BER and 2 Mbps, GFSK, 500-kHz Deviation, 0.1% BER RSSI range (1) 60 dB RSSI offset (1) 97 dBm Absolute uncalibrated accuracy (1) ±6 dB 1 dB RSSI range (1) 60 dB (1) 101 dBm ±3 dB 1 dB Step size (LSB value) All Other Rates/Formats RSSI offset Absolute uncalibrated accuracy (1) Step size (LSB value) (1) Assuming CC2544 EM reference design. Other RF designs give an offset from the reported value. FREQUENCY SYNTHESIZER CHARACTERISTICS Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER Phase noise, unmodulated carrier TEST CONDITIONS MIN TYP At ±1 MHz from carrier –112 At ±2 MHz from carrier –119 At ±5 MHz from carrier –124 MAX UNIT dBc/Hz USB BUS 5-V to 3.3-V REGULATOR Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input voltage, typical minimum 4 Input voltage, typical maximum 5.45 V Current limit 100 mA Start-up time 0.8 ms Output voltage 3.3 V 8 Submit Documentation Feedback V Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 DC CHARACTERISTICS Measured on Texas Instruments CC2544EM reference design with TA = 25°C, VDD = 3.3 V, VBUS tied to 5 V, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0.5 V 50 nA Logic-0 input voltage Logic-1 input voltage 2.5 Logic-0 input current –50 Logic-1 input current –50 V 50 I/O pin pullup and pulldown resistors nA 20 Logic-0 output voltage 4-mA pins Output load 4 mA Logic-1 output voltage 4-mA pins Output load 4 mA Logic-0 output voltage 20-mA pins Output load 20 mA Logic-1 output voltage, 20-A pins Outpu load 20 mA kΩ 0.5 V 2.4 V 0.5 V 2.4 V CONTROL INPUT AC CHARACTERISTICS TA = –40°C to 85°C, VDD = 2 V to 3.6 V. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 32 MHz System clock, fSYSCLK tSYSCLK = 1/ fSYSCLK The undivided system clock is 32 MHz when crystal oscillator is used. The undivided system clock is 16 MHz when calibrated 16-MHz RC oscillator is used. 16 RESET_N low duration See item 1, Figure 1. This is the shortest pulse that is recognized as a complete reset pin request. Note that shorter pulses may be recognized but do not lead to complete reset of all modules within the chip. 1 µs Interrupt pulse duration See item 2, Figure 1.This is the shortest pulse that is recognized as an interrupt request. 20 ns RESET_N 1 2 Px.n T0299-01 Figure 1. Control Input AC Characteristics SPI AC CHARACTERISTICS TA = –40°C to 85°C, VDD = 2 V to 3.6 V PARAMETER t1 SCK period TEST CONDITIONS MIN Master, RX and TX 250 Slave, RX and TX 250 TYP MAX UNIT ns SCK duty cycle Master t2 SSN low to SCK, Figure 2 and Figure 3 Master 63 50% Slave 63 t3 SCK to SSN high Master 63 Slave 63 t4 MOSI early out Master, load = 10 pF t5 MOSI late out Master, load = 10 pF t6 MISO setup Master 90 ns t7 MISO hold Master 10 ns ns ns 7 ns 10 ns Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 9 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com SPI AC CHARACTERISTICS (continued) TA = –40°C to 85°C, VDD = 2 V to 3.6 V PARAMETER TEST CONDITIONS MIN TYP MAX SCK duty cycle Slave t10 MOSI setup Slave 35 t11 MOSI hold Slave 10 t8 MISO early out Slave, load = 10 pF 0 ns t9 MISO late out Slave, load = 10 pF 95 ns Operating frequency 50% UNIT ns ns ns Master, TX only 8 Master, RX and TX 4 Slave, RX only 8 Slave, RX and TX 4 MHz SCK t2 t3 SSN t4 D0 MOSI X t6 MISO t5 D1 t7 D0 X X T0478-01 Figure 2. SPI Master AC Characteristics SCK t2 t3 SSN t8 D0 MISO X t10 MOSI X t9 D1 t11 D0 X T0479-01 Figure 3. SPI Slave AC Characteristics 10 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 DEBUG INTERFACE AC CHARACTERISTICS TA = –40°C to 85°C, VDD = 2 V to 3.6 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 12 MHz fclk_dbg Debug clock frequency (see Figure 4) t1 Allowed high pulse on clock (see Figure 4) 35 ns t2 Allowed low pulse on clock (see Figure 4) 35 ns t3 EXT_RESET_N low to first falling edge on debug clock (see Figure 5) 167 ns t4 Falling edge on clock to EXT_RESET_N high (see Figure 5) 83 ns t5 EXT_RESET_N high to first debug command (see Figure 5) 83 ns t6 Debug data setup (see Figure 6) 2 ns t7 Debug data hold (see Figure 6) 4 ns t8 Clock-to-data delay (see Figure 6) Load = 10 pF 30 ns Time DE BUG_ CLK P1_2 t1 t2 1/fclk_dbg T0436-44 Figure 4. Debug Clock – Basic Timing Ti me DE BUG_ CLK P1_2 RESET_ N t3 t4 t5 T0437-44 Figure 5. Debug Enable Timing Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 11 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com Time DEBUG_ CLK P1_2 DEBUG_DATA (to CC2544) P1_3 DEBUG_DATA (from CC2544) P1_3 t6 t8 t7 T0438-03 Figure 6. Data Setup and Hold Timing TIMER INPUTS AC CHARACTERISTICS TA = –40°C to 85°C, VDD = 2 V to 3.6 V PARAMETER Input capture pulse duration 12 TEST CONDITIONS MIN Synchronizers determine the shortest input pulse that can be recognized. The synchronizers operate at the current system clock rate (16 MHz or 32 MHz). Submit Documentation Feedback 1.5 TYP MAX UNIT tSYSCLK Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 DEVICE INFORMATION PIN DESCRIPTIONS VDD P1_3 P1_2 VSS VDD 32 31 30 29 28 27 26 RBIAS VSS DCPL1 CC2544 RHB Package (Top View) 25 24 VDD 2 23 VDD VDD 3 22 VDD DCPL2 4 21 RF_N VBUS 5 20 RF_P P1_0 6 19 VDD P1_1 7 18 XOSC2 VDD 8 17 16 XOSC1 10 11 12 13 14 15 P0_2 P0_3 RESET_N VDD 9 VDD VSS Thermal Pad VSS USB_N P0_1 1 P0_0 USB_P P0048-19 NOTE: The exposed ground pad must be connected to a solid ground plane; this is the main ground connection for the chip. Table 1. Pin Description Table NAME PIN DESCRIPTION DCPL1 31 1.8-V reg. decouple DCPL2 4 3.3-V reg. decouple P0_0 9 GPIO P0_1 10 GPIO P0_2 13 GPIO P0_3 14 GPIO P1_0 6 GPIO/20 mA P1_1 7 GPIO/20 mA P1_2 28 GPIO/debug clock P1_3 29 GPIO/debug data RBIAS 25 External precision bias resistor for reference current RESET_N 15 Reset, active-low RF_N 21 Negative RF input signal to LNA during RX Negative RF output signal from PA during TX RF_P 20 Positive RF input signal to LNA during RX Positive RF output signal from PA during TX USB_P 1 USB module USB_N 2 USB module VBUS 5 5-V power VDD 3 AVDD VDD 8, 12 IOVDD VDD 16, 19, 22, 23, 24 AVDD Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 13 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com Table 1. Pin Description Table (continued) NAME VDD PIN DESCRIPTION 26 AVDD_GUARD VDD 30 IOVDD VSS 11, 27 VSS 32 VSS Ground pad Optional IOVSS USB ground Must be connected to solid ground as this is the main ground connection for the chip. XOSC1 17 32-MHz crystal oscillator pin 1or external-clock input XOSC2 18 32-MHz crystal oscillator pin 2 14 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 BLOCK DIAGRAM A block diagram of the CC2544 is shown in Figure 7. The modules can be roughly divided into one of three categories: CPU-related modules; modules related to power, test, and clock distribution; and radio-related modules. In the following subsections, a short description of each module is given. For more details, see the CC2543/44/45 User’s Guide (SWRU283). WATCHDOG TIMER RESET XOSC_Q2 32-MHz CRYSTAL OSC XOSC_Q1 CLOCK MUX and CALIBRATION HIGHSPEED RC-OSC DEBUG INTERFACE ON-CHIP VOLTAGE REGULATOR VDD (2 V–3.6 V) POWER ON RESET BROWN OUT 5 V to 3.3 V VOLTAGE REGULATOR SFR Bus RESET_N DCOUPL VBUS (4 V –5.45 V) SLEEP TIMER 32-kHz RC-OSC POWER MANAGEMENT CONTROLLER PDATA XRAM 8051 CPU CORE IRAM SFR RAM SRAM FLASH FLASH MEMORY ARBITRATOR P1_3 P1_2 DMA P1_1 UNIFIED P1_0 IRQ CTRL FLASH CTRL 1 KB SRAM FIFOCTRL RADIO Arbiter PSEUDO-RANDOM NUMBER GENERATOR P0_2 RADIO REGISTERS Link Layer Engine AES ENCRYPTION AND DECRYPTION SFR Bus P0_0 I/O CONTROLLER P0_1 DEMODULATOR SYNTH P0_3 MODULATOR USB_N USB RECEIVE USART 0 FREQUENCY SYNTHESIZER USB_P TRANSMIT TIMER 1 (16-Bit) TIMER 2 (RADIO TIMER) RF_P RF_N TIMER 3 (8-Bit) DIGITAL ANALOG TIMER 4 (8-Bit) MIXED B0301-09 Figure 7. CC2544 Block Diagram Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 15 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com BLOCK DESCRIPTIONS CPU and Memory The 8051 CPU core is a single-cycle 8051-compatible core. It has three different memory access busses (SFR, DATA, and CODE/XDATA), a debug interface, and an 15-input extended interrupt unit. The memory arbiter is at the heart of the system, as it connects the CPU and DMA controller with the physical memories and all peripherals through the SFR bus. The memory arbiter has four memory-access points, access of which can map to one of three physical memories: an SRAM, flash memory, and XREG/SFR registers. It is responsible for performing arbitration and sequencing between simultaneous memory accesses to the same physical memory. The SFR bus is drawn conceptually in Figure 7 as a common bus that connects all hardware peripherals to the memory arbiter. The SFR bus in the block diagram also provides access to the radio registers in the radio register bank, even though these are indeed mapped into XDATA memory space. The 2-KB SRAM maps to the DATA memory space and to parts of the XDATA memory spaces. The 32-KB flash block provides in-circuit programmable non-volatile program memory for the device, and maps into the CODE and XDATA memory spaces. Peripherals Writing to the flash block is performed through a flash controller that allows page-wise erasure and 4-bytewise programming. See User Guide for details on the flash controller. A versatile two-channel DMA controller is available in the system, accesses memory using the XDATA memory space, and thus has access to all physical memories. Each channel (trigger, priority, transfer mode, addressing mode, source and destination pointers, and transfer count) is configured with DMA descriptors that can be located anywhere in memory. Many of the hardware peripherals (AES core, flash controller, USART, timers, etc.) can be used with the DMA controller for efficient operation by performing data transfers between a single SFR or XREG address and flash/SRAM. The interrupt controller services a total of 15 interrupt sources, divided into six interrupt groups, each of which is associated with one of four interrupt priorities. Any interrupt service request is serviced also when the device is in idle mode by going back to active mode. Some interrupts can also wake up the device from sleep mode (when in sleep mode, the device is in low-power mode PM1). The debug interface implements a proprietary two-wire serial interface that is used for in-circuit debugging. Through this debug interface, it is possible to perform an erasure of the entire flash memory, control which oscillators are enabled, stop and start execution of the user program, execute supplied instructions on the 8051 core, set code breakpoints, and single-step through instructions in the code. Using these techniques, it is possible to perform in-circuit debugging and external flash programming elegantly. The I/O controller is responsible for all general-purpose I/O pins. The CPU can configure whether peripheral modules control certain pins or whether they are under software control, and if so, whether each pin is configured as an input or output and if a pullup or pulldown resistor in the pad is connected. Each peripheral that connects to the I/O pins can choose between several different I/O pin locations to ensure flexibility in various applications. The sleep timer is an ultralow-power timer that uses an internal 32.753-kHz RC oscillator. The sleep timer runs continuously in all operating modes. Typical applications of this timer are as a real-time counter or as a wake-up timer to get out of power mode 1. A built-in watchdog timer allows the CC2544 to reset itself if the firmware hangs. When enabled by software, the watchdog timer must be cleared periodically; otherwise, it resets the device when it times out. Timer 1 is a 16-bit timer with timer/counter/PWM functionality. It has a programmable prescaler, a 16-bit period value, and five individually programmable counter/capture channels, each with a 16-bit compare value. Each of the counter/capture channels can be used as a PWM output or to capture the timing of edges on input signals. It can also be configured in IR generation mode, where it counts timer 3 periods and the output is ANDed with the output of timer 3 to generate modulated consumer IR signals with minimal CPU interaction. 16 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 Timer 2 is a 40-bit timer used by the Radio. It has a 16-bit counter with a configurable timer period and a 24-bit overflow counter that can be used to keep track of the number of periods that have transpired. A 40-bit capture register is also used to record the exact time at which a start-of-frame delimiter is received/transmitted or the exact time at which a packet ends. There are two 16-bit timer-compare registers and two 24-bit overflowcompare registers that can be used to give exact timing for start of RX or TX to the radio or general interrupts. Timer 3 and timer 4 are 8-bit timers with timer/counter/PWM functionality. They have a programmable prescaler, an 8-bit period value, and one programmable counter channel with an 8-bit compare value. Each of the counter channels can be used as PWM output. USART 0 is configurable as either an SPI master/slave or a UART. It provides double buffering on both RX and TX and hardware flow control and is thus well suited to high-throughput full-duplex applications. The USART has its own high-precision baud-rate generator, thus leaving the ordinary timers free for other uses. When configured as SPI slaves, the USART samples the input signal using SCK directly instead of using some oversampling scheme, and are thus well-suited for high data rates. The AES encryption/decryption core allows the user to encrypt and decrypt data using the AES algorithm with 128-bit keys. The AES core also supports ECB, CBC, CFB, OFB, CTR, and CBC-MAC, as well as hardware support for CCM. Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 17 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com TYPICAL CHARACTERISTICS RX CURRENT vs TEMPERATURE TX CURRENT vs TEMPERATURE 23.5 31.0 22.5 Current (mA) Current (mA) 23.0 31.5 3.3-V Supply −70 dBm Input 22.0 21.5 21.0 20.5 −40 3.3-V Supply TXPOWER = 4 dBm 30.5 30.0 29.5 29.0 −20 0 20 40 Temperature (°C) 60 80 28.5 −40 −20 0 20 40 Temperature (°C) Figure 8. Figure 9. RX SENSITIVITY vs TEMPERATURE TX POWER vs TEMPERATURE −80 5 −82 4 Level (dBm) Sensitivity (dBm) −81 −83 −84 2 −85 1 −20 0 20 40 Temperature (°C) 60 80 3.3-V Supply TXPOWER = 4 dBm 3 0 −40 Figure 10. 18 80 6 3.3-V Supply −86 −40 60 −20 0 20 40 Temperature (°C) 60 80 Figure 11. Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 TYPICAL CHARACTERISTICS (continued) RX CURRENT vs SUPPLY VOLTAGE TX CURRENT vs SUPPLY VOLTAGE 23.0 22.8 30.5 T = 25°C −70 dBm Input T = 25°C TXPOWER = 4 dBm 22.6 30.0 Current (mA) Current (mA) 22.4 22.2 22.0 21.8 29.5 21.6 29.0 21.4 21.2 21.0 2.0 2.2 2.4 2.6 2.8 3.0 Supply Voltage (V) 3.2 3.4 3.6 28.5 2.0 2.2 2.4 2.6 2.8 3.0 Supply Voltage (V) Figure 12. Figure 13. RX SENSITIVITY vs SUPPLY VOLTAGE TX POWER vs SUPPLY VOLTAGE −82 3.6 T = 25°C TXPOWER = 4 dBm 5 Level (dBm) −83 Sensitivity (dBm) 3.4 6 T = 25°C −84 −85 −86 2.0 3.2 4 3 2.2 2.4 2.6 2.8 3.0 Supply Voltage (V) 3.2 3.4 3.6 2 2.0 Figure 14. 2.2 2.4 2.6 2.8 3.0 Supply Voltage (V) 3.2 3.4 3.6 Figure 15. Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 19 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) RX SENSITIVITY vs FREQUENCY TX POWER vs FREQUENCY −82 6 3.3-V Supply T = 25°C 3.3-V Supply T = 25°C TXPOWER = 4 dBm 5 Level (dBm) Sensitivity (dBm) −83 −84 −85 −86 2400 4 3 2420 2440 2460 Frequency (MHz) 2 2400 2480 2420 2440 2460 Frequency (MHz) Figure 16. 2480 Figure 17. RX INTERFERER REJECTION (SELECTIVITY) vs INTERFERER FREQUENCY 85 75 Rejection (dB) 55 3.3-V Supply T = 25°C Wanted signal at 2426 MHz 35 15 −5 −25 Wanted signal 3 dB above sensitivity limit Wanted signal 10 dB above sensitivity limit Wanted signal 30 dB above sensitivity limit Wanted signal 50 dB above sensitivity limit −45 −65 −15 −10 −5 0 5 Frequency Offset (MHz) 10 15 Figure 18. 20 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 APPLICATION INFORMATION Few external components are required for the operation of the CC2544. A typical application circuit is shown in Figure 19. For suggestions of component values other than those listed in Table 2, see reference design CC2544EM. The performance stated in this data sheet is only valid for the CC2544EM reference design. To obtain similar performance, the reference design should be copied as closely as possible. C311 D+ D– R21 C21 RBIAS 25 VSS 27 VDD 26 P1_2 28 VDD 30 P1_3 29 VSS 32 C11 Antenna (50 W) 1 USB_P VDD 24 2 USB_N VDD 23 3 VDD VDD 22 4 DCPL2 RF_N 21 CC2544 VBUS 6 P1_0 7 P1_1 XOSC2 18 8 VDD XOSC1 17 16 VDD VDD 19 15 RESET_N 14 P0_3 13 P0_2 9 11 VSS DIE ATTACH PAD P0_0 C41 RF_P 20 5 12 VDD 4-V to 5.45-V Power Supply 10 P0_1 R11 DCPL1 31 R251 C171 C181 Power Supply Decoupling Capacitors are Not Shown Digital I/O Not Connected S0383-06 Figure 19. CC2544 Application Circuit Table 2. Overview of External Components (Excluding Balun, Crystal and Supply Decoupling Capacitors) Component Description Value C11 USB D+ decoupling 47 pF C21 USB D– decoupling 47 pF C41 Decoupling capacitor for the internal 5V-3.3V digital voltage regulator 1 µF C311 Decoupling capacitor for the internal 1.8V digital voltage regulator 1 µF R11 USB D+ series resistor 33 Ω R21 USB D– series resistor 33 Ω R251 Precision resistor ±1%, used for internal biasing 56 kΩ Input/Output Matching When using an unbalanced antenna such as a monopole, a balun should be used to optimize performance. The balun can be implemented using low-cost discrete inductors and capacitors. See reference design, CC2544EM, for recommended balun. Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 21 CC2544 SWRS103D – JUNE 2011 – REVISED MAY 2012 www.ti.com Crystal An external 32-MHz crystal with two loading capacitors is used for the 32-MHz crystal oscillator. The load capacitance seen by the 32-MHz crystal is given by: 1 CL = + Cparasitic 1 1 + C171 C181 (1) A series resistor may be used to comply with ESR requirement. On-Chip 1.8-V Voltage Regulator Decoupling The 1.8-V on-chip voltage regulator supplies the 1.8-V digital logic. This regulator requires a decoupling capacitor (C311) for stable operation. On-Chip 5-V to 3.3-V USB Voltage Regulator Decoupling The 5-V to 3.3-V on-chip voltage regulator supplies the 1.8-V on-chip voltage regulator. This regulator requires a decoupling capacitor (C41) for stable operation. Power-Supply Decoupling and Filtering Proper power-supply decoupling must be used for optimum performance. The placement and size of the decoupling capacitors and the power supply filtering are very important to achieve the best performance in an application. TI provides a compact reference design that should be followed very closely. 22 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 CC2544 www.ti.com SWRS103D – JUNE 2011 – REVISED MAY 2012 REVISION HISTORY Changes from Original (June 2011) to Revision A • Page Changes to the Product Preview data sheet ........................................................................................................................ 1 Changes from Revision A (March 2012) to Revision B • Page Changed From: (–84 dBm at 2 Mbps) To: (–88 dBm at 2 Mbps) ......................................................................................... 1 Changes from Revision B (April 2012) to Revision C • Page Changed the device From: Preview To: Production ............................................................................................................. 1 Changes from Revision C (April 2012) to Revision D • Page Added the Description .......................................................................................................................................................... 2 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): CC2544 23 PACKAGE OPTION ADDENDUM www.ti.com 3-May-2012 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) CC2544RHBR ACTIVE QFN RHB 32 3000 Green (RoHS & no Sb/Br) CU NIPDAUAGLevel-3-260C-168 HR CC2544RHBT ACTIVE QFN RHB 32 250 Green (RoHS & no Sb/Br) CU NIPDAUAGLevel-3-260C-168 HR Samples (Requires Login) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 2-May-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant CC2544RHBR QFN RHB 32 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 CC2544RHBT QFN RHB 32 250 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 2-May-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) CC2544RHBR QFN RHB 32 3000 338.1 338.1 20.6 CC2544RHBT QFN RHB 32 250 338.1 338.1 20.6 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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