Click here to ask about the production status of specific part numbers. Evaluates: MAX32655 MAX32655 Evaluation Kit General Description Benefits and Features The MAX32655 evaluation kit (EV kit) provides a platform External Bluetooth Antenna with SMA Interface for evaluation capabilities of the MAX32655 microcon- Stereo Audio Codec with Line-In and Line-Out 3.5mm Jacks troller, which is an advanced system-on-chip (SoC). It fea- Digital Microphone tures an Arm Cortex -M4F CPU for efficient computation 320 x 240 Color TFT Resistive Touch Display with an of complex functions and algorithms, integrated power SPI Interface management (SIMO), and the newest generation 128Mb Quad SPI Flash Bluetooth 5.0 Low Energy (Bluetooth LE), long-range USB 2.0 Micro-B to Serial UARTs radio for wearable and hearable device applications. UART0 and LPUART Interface Selectable through On-Board Jumpers MAX32655 EV Kit Contents All GPIOs Signals Accessed through 0.1in Headers MAX32655 EV Kit Containing a MAX32655 with a Access to the Eight Analog Inputs through 0.1in Headers Preprogrammed Demo 10-Pin SWD and RV JTAG Connectors One External Bluetooth Antenna Board Power Provided by USB Port MAX32625PICO Debugger with Cables On-Board 1.8V and 3.3V LDO Regulators JTAG Debugger with Ribbon Cable MAX32655 Can be Solely Sourced by the Coin Cell One USB Standard-A to Micro-B Cable Battery One USB Standard-A to Standard-B Cable Individual Power Measurement on All IC Rails through Jumpers Two General-Purpose LEDs and Two General- Ordering Information appears at end of data sheet. Purpose Pushbutton Switches MAX32655 EV Kit Board Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere. Bluetooth is a trademark of Bluetooth SIG, Inc. 319-100585 Rev 0 8/20Evaluates: MAX32655 MAX32655 Evaluation Kit Bluetooth 5.0 Interface Quick Start An SMA connector is provided to attach an external Required Equipment Bluetooth 2.4GHz antenna. MAX32655 EV Kit Containing a MAX32655 with a Preprogrammed Demo Color TFT Display The display provided is a 3.5in, 320 x 240 color TFT One USB Standard-A to Micro-B Cable with an integrated TFT controller from Crystalfontz . The Procedure resistive touch controller is a separate IC that is con- The EV kit is fully assembled and tested. Follow the steps nected to the SPI bus of the MAX32655. below to verify board operation: Audio Stereo Codec Interface 1) While observing safe ESD practices, carefully remove The MAX32655 interfaces to the MAX9867 external audio the MAX32655 EV kit board out of its packaging. 2 2 codec IC through its I C and I S ports. Line-in and line- Inspect the board to ensure that no damage occurred out 3.5mm jacks are provided for audio access. during shipment. Jumpers/shunts are preinstalled prior to testing and packaging. Digital Microphone 2) Power up the board by plugging in the provided USB The MAX9867 codec interfaces to a miniature digital cable to connector CN1. Verify that the 5V (DS1) blue microphone embedded on an IC. LED (DS1) and the 3.3V (DS2) and 1.8V (DS2) green Memory LEDs are illuminated. A 128Mb QSPI flash is provided as optional external 3) The MAX32655 is preprogrammed with a demo pro- memory. gram. The demo will now initiate and display the Max- im logo upon successful completion. JTAG Serial Wire Debug (SWD) Support SWD debug can be accessed through the Cortex 10-pin Detailed Description of Hardware connector, JH3. Logic levels are fixed to VDDIO (1.8V). Power Supply RISC-V JTAG Test Port The EV kit is powered by +5V, which is made available RISC-V debug can be accessed through a Cortex 10-pin through VBUS on the USB Micro-B connector CN1. A blue connector, JH4. Logic levels are fixed to VDDIO (1.8V). LED (DS1) illuminates when the board is powered. Green LEDs (DS2) and (DS3) illuminate when the 3V3 and 1V8 UART Interface LDOs are powered, respectively. The MAX32655 itself The EV kit provides a USB-to-UART bridge chip, FTDI can be solely sourced by a coin cell battery or on-board FT230X. This bridge eliminates the requirement for a 3.3V through the JP8 header. physical RS-232 COM port. Instead, the ICs UART access is through the USB Micro-B connector, CN1. The Current Monitoring USB-to-UART bridge can be connected to the ICs UART Two pin headers provide convenient current monitor- 0 or LPUART with jumpers JP4 (Rx) and JP5 (Tx). Virtual ing points for VDDIOH (JP10), VDDIO (JP12), VDDA COM port drivers and guides for installing Windows driv- (JP14), VCOREA (JP16), VCOREB (JP18), and BLE ers are available at the FTDI chip website. LDO (JP19). GPIO and Alternate Function Headers Clocking The GPIO and alternate function signals from the The MAX32655 clocking is provided by an external MAX32655 can be accessed through the 0.1in spaced 32MHz crystal (Y1) and an external 32.768kHz crystal headers JH6, JH7, JH8, JH9, and JH13. (Y2) for RTC operation. Crystalfontz is a registered trademark of Crystalfontz America, Inc. Windows is a registered trademark of Microsoft Corporation. Maxim Integrated 2 www.maximintegrated.com