Click here to ask about the production status of specific part numbers. Evaluates: MAX32675 MAX32675 Evaluation Kit General Description Features The MAX32675 evaluation kit (EV kit) provides a platform HART Compatible Secondary Master with the Ability for evaluation capabilities of the MAX32675 microcon- to Connect to Existing 4-20mA Current Loop and troller, which is a highly integrated, mixed-signal, ultra- Communicate with HART Enabled Devices low-power microcontroller designed for industrial and USB 2.0 Micro B to Serial UART medical sensors. It contains an integrated, low-power Two On-Board, High-Precision Voltage References HART modem which enables the bidirectional transfer of digital data over a current loop, to/from industrial sensors All GPIOs Signals Accessed Through 0.1in Headers for configuration and diagnostics. Access to 4 Analog Inputs Through SMA Connectors Configured as Differential EV Kit Contents Access to 8 Analog Inputs Through 0.1in Headers MAX32675 EV kit containing a MAX32675 with a Configured as Single-Ended preprogrammed demo DAC Output Accessed Through SMA Connector or MAX32625PICO debugger w/cables Test Point One standard A to Micro B USB cable 10-Pin SWD and Connector Board Power Provided by USB Port On-Board 1.0V, 1.8V, and 3.3V LDO Regulators Ordering Information appears at end of data sheet. Individual Power Measurement on all IC Rails Through Jumpers Two General-Purpose LEDs and Two General- Purpose Pushbutton Switches MAX32675 EV Kit Board 319-100752 Rev 0 4/21MAX32675 Evaluation Kit Evaluates: MAX32675 Voltage Reference Quick Start The differential reference inputs REF0 and REF1 can be Required Equipment sourced by an internal reference (INT VREF) or a higher MAX32675 EV kit containing a MAX32675 with a precision external reference source, MAX6071. This is preprogrammed demo selected by jumpers JP25 and JP26. One standard A to Micro B USB cable JTAG Serial Wire Debug (SWD) Support Procedure SWD debug can be accessed through a Arm Cortex The EV kit is fully assembled and tested. Use the follow- 10-pin connector (J4). Logic levels are fixed to (3V3). ing steps to verify board operation: UART Interface Caution: Do not turn on the power supply until all The EV kit provides a USB-to-UART bridge chip, FTDI connections are completed. FT2232. This bridge eliminates the requirement for a physi- 1) While observing safe ESD practices, carefully cal RS-232 COM port. Instead, the ICs UART access is remove the MAX32675 EV kit board out of its through the Micro-USB type-B connector, CN1. The USB- packaging. Inspect the board to ensure that no to-UART bridge can be connected to UART 0. Virtual COM damage occurred during shipment. Jumpers/shunts port drivers and guides for installing Windows drivers are are preinstalled prior to testing and packaging. available at the FTDI chip website. 2) Power up the board by plugging in the provided Boot Loader USB cable to connector CN1. Verify that the 5V blue Boot load is activated by boot load enable slide switch LED (D5) and the 3V3 (D6), 1V8 (D7), and 1V0 (D8) SW5. green LEDs are illuminated. 3) The MAX32675 is preprogrammed with a demo GPIO and Alternate Function Headers program and it flashes green LED (D2) upon GPIO and alternate function signals from the MAX32675 successful completion. can be accessed through 0.1in spaced headers JH1, JH2, JH3, and JH4. Detailed Description of Hardware Analog Input Access (or Software) Analog inputs (AIN1AIN4) can be accessed differentially Power Supply from SMA connectors J2 and J3 or separately from TP10, The EV kit is powered by +5V that is made available TP12, TP15, and TP16, respectively. through V on the Micro-USB type-B connector CN1. BUS Analog inputs (AIN5AIN11) can be accessed through A blue LED (D5) illuminates when the board is powered. 0.1in spaced headers JH5 and JH6. Green LEDs (D6), (D7), and (D8) illuminate when the 3V3, 2 1V8, and 1V0 LDOs are powered, respectively. I C Pullups 2 The I C port can independently pulled up to 3V3 through Current Monitoring JP3 (I2C SCLK) and JP4 (I2C SDA). Two pin headers provide convenient current monitoring points for DVDD EN (JP21), AVDD EN (JP22), DVDD2 EN Reset Pushbutton (JP23), and VCOREA (JP24). The IC can be reset by pushbutton SW3. To accurately achieve the low-power current values, the EV Indicator LEDs kit needs to be configured such that no outside influence General-purpose indicators LED D1 (red) is connected (i.e., pullups, external clock, debugger connector, etc.) to GPIO P1.9 and LED D2 (green) is connected to GPIO causes a current source or sink on that GPIO. P1.10. Clocking GPIO Pushbutton Switches The MAX32675 clocking is provided by an external 16MHz The two general-purpose pushbuttons (SW1 and SW2) are crystal (Y1). connected to GPIO P1.11 and P1.12, respectively. If the pushbutton is pressed, the attached port pin is pulled low. Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere. Microsoft Corporation registered trademark and registered service mark. Maxim Integrated 2 www.maximintegrated.com