MAX32660-EVSYS Key Pin Description
Detailed Pin Functions
1. User Interaction Pins
- P0.12: Connected to the on-board button, can be used as a user input trigger for custom operations.
- P0.13: Connected to the on-board red LED, allows controlling the LED’s on/off state via software.
2. Debug Interface
- P0.0 (SWDIO) and P0.1 (SWDCLK): Used for SWD (Serial Wire Debug) protocol, enabling program download and real-time debugging via a debugger (e.g., JTAG/SWD adapter).
3. Power and Ground
- VDDIO (Pin 9, JH3): Main power input with a voltage range of 1.7V to 3.6V, powered by Micro USB or an external power source.
- GND (Pin 9, JH4): Ground terminal for all circuits, must be connected to the negative pole of the power supply to ensure stable operation.
4. Serial Port (UART)
- UART0A:
- Commonly used pins: P0.4 (TX) (Transmit) and P0.5 (RX) (Receive) for standard UART communication with external devices (e.g., sensors, modules).
- UART1A:
- Commonly used pins: P0.10 (TX) and P0.11 (RX) connected to the debugger’s virtual serial port, enabling direct communication with a computer for debug logging or data transfer.
5. I2C and SPI Interfaces
- I2C0A:
- P0.8 (SCL) (Clock Line) and P0.9 (SDA) (Data Line), used to connect I2C-compatible peripherals (e.g., sensors, EEPROM, displays).
- SPI0A:
- P0.4 (MISO) (Master In Slave Out), P0.5 (MOSI) (Master Out Slave In), P0.6 (SCK) (Clock), supporting SPI communication for high-speed data transfer with 外设 (e.g., SD cards, displays).
Tech Tips：
- Connecting External Modules:
- Match the function pins of sensors, displays, or other modules to the corresponding pins on the board (e.g., UART’s TX/RX to the module’s RX/TX, I2C’s SCL/SDA to the module’s SCL/SDA).
- Voltage Compatibility:
- Ensure the voltage level of external peripherals matches the board’s VDDIO (1.7V~3.6V) to prevent chip damage.
By leveraging these key pins, users can flexibly control the MAX32660’s peripheral functions, establish data communication, implement user interaction, and perform system debugging for various application scenarios.
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Related Products:
- MAXIM Development Board MAX32660-EVSYS : Provides a compact and powerful development platform, enabling access to all features of the MAX32660. This board delivers a robust processing subsystem in a very small form factor, making it easy to integrate into various applications.
- MAX32660: A 32-bit MCU based on the Arm Cortex-M4F core, with a maximum clock speed of 96 MHz. It includes 256 KB of Flash, 96 KB of SRAM, and 16 KB of instruction cache. It is an excellent choice for both wearable devices and IoT applications.
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