Analog Devices MAX32690FTHR User Manual page 5

Evaluation Board User Guide
2
3.3V
3
1.8V
4 GND
5
P3.0
6
P3.1
7
P3.4
8
P0.9
9
P0.10
10
P0.7
11
P2.29
12
P2.28
13
P2.27
14 P1.9
15 P1.10
16 GND
Reset Pushbutton
The reset pushbutton (SW2) momentarily pulls the RSTN pin low. RSTN is internally pulled up to V
Electrical Characteristics table in the device data sheet for resistance value R
General-purpose Pushbuttons
General-purpose pushbuttons PB1 and PB2 are connected to GPIOs P1.14 and P1.15, respectively. If the pushbutton is
pressed, the attached port pin is pulled low.
Power Cycle Pushbutton
Power cycle pushbutton (SW1) is connected to the PMIC's nEN enable input pin and it serves as a manual reset for the
PMIC when pressed for 8 seconds. The enable pin is also connected to pin 2 of the J1 header.
For more information on the PMIC's manual reset, please check MAX77654 datasheet.
Indicator LED
The general-purpose indicator RGB LED (D1) is driven by the GPIOs P0.14 (Red), P2.25 (Blue), and P2.24 (Green).
UART Interface
There are three UART interfaces on the board. The first, UART0, can be accessed through the SWD connector (J4).
When connected to this connector, the MAX32625PICO board provides a USB Communication Device Class (CDC)
virtual serial port via the UART0 interface. The second and third interfaces, UART2 and LPUART0, are accessible through
pins 14 and 15 and pins 5 and 6 of the J2 connector, respectively.
analog.com
3.3V Output. Typically used to provide 3.3V to peripherals connected to the expansion
headers.
1.8V Output. Typically used to provide 1.8V to peripherals connected to the expansion
headers.
Ground
GPIO; ADC Input 0/Comparator 0 Negative Input (AIN0/AIN0N); Low-Power UART0
Port Map B Receive (LPUART0B_RX)
GPIO; ADC Input 1/Comparator 0 Positive Input (AIN1/AIN0P); Low-Power UART0 Port
Map B Transmit (LPUART0B_TX)
GPIO; ADC Input 4/Comparator 2 Negative Input (AIN4/AIN2N); Low-Power Timer0
Port Map B Input/Output 32-Bits or Lower 16-Bits (LPTMR0B_IOA)
GPIO; ADC External Clock Input (ADC_CLK_EXT); Timer0 Port Map C Input/Output
32-Bits or Lower 16-Bits Only Inverted Output (TMR0C_IOAN)
GPIO; ADC Trigger Input (ADC_TRIG_A); Timer0 Port Map C Input/Output Upper 16-
Bits Only Inverted Output (TMR0C_IOBN)
GPIO; 1-Wire Controller Pull-up Enable (OWM_PE); Timer1 Port Map B Input/Output
32-Bits or Lower 16-Bits Only (TMR1B_IOA)
GPIO; Pulse Train 0 (PT0); SPI0 Port Map B Serial Clock (SPI0B_SCK); I2S0 Port Map
C Serial Clock (I2S0C_SCK)
GPIO; Pulse Train 14 (PT14); SPI0 Port Map B Controller Out Target In/Data 0
(SPI0B_MOSI); I2S0 Port Map C Serial Data Out (I2S0C_SDO)
GPIO; Pulse Train 13 (PT13); SPI0 Port Map B Controller In Target Out/Data 1
(SPI0B_MISO); I2S0 Port Map C Serial Data In (I2S0C_SDI)
GPIO; UART2 Port Map A Receive (UART2A_RX); Pulse Train 3 (PT3)
GPIO; UART2 Port Map A Transmit (UART2A_TX); Pulse Train 4 (PT4)
Ground
MAX32690FTHR
DDIO
and R .
PU1 PU2
Rev0
. Refer to the
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