MAXQ7667AACM/V+ Maxim Integrated Products, MAXQ7667AACM/V+ Datasheet
MAXQ7667AACM/V+
Specifications of MAXQ7667AACM/V+
Related parts for MAXQ7667AACM/V+
MAXQ7667AACM/V+ Summary of contents
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... Universal Asynchronous Receiver-Transmitter (UART) o Local Interconnect Network (LIN) See the Detailed Features section for complete list of features. PART MAXQ7667AACM/V+ Note: All devices are specified over the -40°C to +125°C oper- ating temperature range. /V denotes an automotive qualified part. + Denotes a lead(Pb)-free/RoHS-compliant package. ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ABSOLUTE MAXIMUM RATINGS DVDDIO, GATE5, REG3P3, REG2P5 to DGND ................................................................-0.3V to +6.0V AVDD to AGND .....................................................-0.3V to +4.0V DVDD to DGND .....................................................-0.3V to +3.0V DVDDIO to DVDD..................................................-0.3V to +6.0V AVDD to DVDD......................................................-0.3V to +4.0V ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ELECTRICAL CHARACTERISTICS (continued +5V +3.3V; V DVDDIO AVDD DVDD ( 50kHz 1µF in parallel with 0.01µF, f BPF REFBG REF otherwise specified. Typical values ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System (V = +5V +3.3V, V DVDDIO AVDD DVDD unless otherwise noted.) BURST OUTPUT FREQUENCY vs. TEMPERATURE 50.05 USING PLL 50.04 50.03 50.02 50.01 50.00 49.99 49.98 49.97 49.96 49.95 -50 -25 0 ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System (V = +5V +3.3V, V DVDDIO AVDD DVDD unless otherwise noted.) SAR ADC GAIN ERROR vs. TEMPERATURE 3.0 2 3.3V AVDD 2 AVDD 1 3.6V ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System (V = +5V +3.3V, V DVDDIO AVDD DVDD unless otherwise noted.) DVDDIO REGULATOR OUTPUT VOLTAGE vs. LOAD CURRENT 5.5 5.0 DRAIN = 14V 4.5 DRAIN = 8V 4.0 3.5 EXTERNAL VOLTAGE SOURCE ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System PIN NAME Port 1 Data 3/JTAG Serial Clock Input. P1 general-purpose digital I/O. TCK is the JTAG 1 P1.3/TCK serial test clock input. Refer to the MAXQ7667 User’s Guide Sections 5 and ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System PIN NAME Crystal Oscillator Output. Connect an external crystal or resonator between XIN and XOUT. Leave 21 XOUT XOUT unconnected when driving XIN with a 2.5V level clock or when an external clock source ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System TRANSDUCER BURST ENABLE BURST 0.01µF 470pF 0V 2mV 0.01µF ECHON 470pF ECHOP BSP129 DVDDIO 0.1µF GATE5 REG3P3 AVDD 0.1µF REG2P5 +8V TO +20V DVDD V+ 0.1µF DGND GND GPIO/JTAG INTERFACE P0.0/URX Rx MODULE LIN ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Detailed Features o Smart Analog Peripherals Dedicated Ultrasonic Burst Generator Echo Receiving Path Low-Noise Amplifier Time Variable Gain Amplifier 16-Bit Sigma-Delta ADC Digital Bandpass Filter Full-Wave Rectifier and Digital Lowpass Filter 8-Deep, 16-Bit Wide ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Detailed Description The ultrasonic distance-measurement peripherals in the MAXQ7667 include a burst signal generator for acoustic transmission and mixed signal circuits for amplifying and digitizing echo signals ranging between 25kHz and 100kHz. The burst ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Echo Receive Path Low-Noise Amplifier (LNA) The LNA provides a 40V/V fixed gain to the input signal. The differential inputs of the LNA are ECHOP and ECHON. For proper biasing of the LNA, AC-couple ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System The MAXQ7667 features a 16-bit sigma-delta ADC with an analog gain adjustable from 38dB to 60dB (includ- ing the fixed LNA gain) with a maximum gain step of 12.5% (typical). Gain changes settle within ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System output to the FIFO automatically each time the lowpass filter output updates, through the control of one of the timer outputs, or through software. The device includes a FIFO depth counter with programmable interrupt ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System SAR ADC Analog Input Track-and-Hold (T/H) Figures 6 and 7 show the equivalent input circuit of the MAXQ7667 analog input architecture. During acquisi- tion (track), a sampling capacitor charges to the posi- tive input ...
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... The MAXQ7667 supports the following master clock sources: • Internal high-frequency oscillator drives an exter- nal 1MHz–16MHz crystal or ceramic resonator MAXQ is a registered trademark of Maxim Integrated Products, Inc. ______________________________________________________________________________________ • Internal, fast-starting, 13.5MHz RC oscillator (default oscillator at startup and in the event the external crystal fails) ® ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System SCNT.0:STIME SCNT.11:STDIV2 PROGRAMMABLE SYSTEM DIVIDE BY CLOCK ..., 128 P1.7/SYNC SCNT.8:SSYNC_EN CLR Figure 8. Schedule-Timer Module Block Diagram CAPTURE INPUT CONDITIONING CLOCK SCALING GATING Figure 9. Type 2 Timer/Counter in 16-Bit ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System The joint test action group (JTAG) IEEE 1149.1 standard defines a unique method for in-circuit testing and pro- gramming. The MAXQ7667 conforms to this standard, implementing an external test access port (TAP) and internal ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System The following four digital I/Os form the TAP interface: • TDO—Serial output signal for test instruction and data. Data transitions on the falling edge of TCK. TDO idles high when inactive. TDO serially trans- ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System SHIFT SS SCLK CKPOL/CKPHA 0/1 OR 1/0 SCLK CKPOL/CKPHA 0/0 OR 1/1 MOSI MISO Figure 11. SPI Timing Diagram in Master Mode SHIFT t SSE SS SCLK CKPOL/CKPHA 0/1 OR 1/0 SCLK CKPOL/CKPHA 0/0 ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System MAXQ7667 PD0._ MUX SF DIRECTION SF ENABLE PR0._ PO0._ MUX SF OUTPUT PS0._ PI0 INPUT FLAG Figure 13. Port 0 Digital I/O Basic Circuitry. Port 1 Circuitry is the Same as Port ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System not externally forced low. An internal POR flag indicates the source of a reset. Ramp up the DVDD supply at a minimum rate of 60mV/ms to keep the device in POR until DVDD fully ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System memory. Access physical memory segments (other than the stack and register memories) as either pro- gram memory or data memory, but not both at once. By default, the memory is arranged in a Harvard ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System the application code executes. The application codes initiate reprogramming. If the password is not set, the MAXQ7667 monitors the UART for an autobaud char- acter (0x0D). If this character is received, the device sets ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Table 1. System Register Map REGISTER INDEX AP (8h) A (9h APC 2h — 3h — 4h PSF IMR 7h — — Ah — A[10] ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ______________________________________________________________________________________ 31 ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System 32 ______________________________________________________________________________________ ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Table 3. Peripheral Register Map REGISTER INDEX M0 (0h) 0h PO0 1h PO1 2h — 3h EIF0 4h EIF1 5h — 6h — 7h — 8h PI0 9h PI1 Ah — Bh EIE0 Ch ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System 34 ______________________________________________________________________________________ ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ______________________________________________________________________________________ 35 ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System 36 ______________________________________________________________________________________ ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System ______________________________________________________________________________________ 37 ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System 38 ______________________________________________________________________________________ ...
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RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System Applications Information Development and Technical Support A variety of highly versatile, affordably priced develop- ment tools for this µC are available from Maxim and third-party suppliers, including: – Compilers – Evaluation kit – Integrated ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 40 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...