Resource	Parameter	Value	Remarks
ADC	VREF	1.2 V
	Measurement type	Single Ended
	Input voltage range	0 to 2.4 V (0 to 2*VREF)
	Output range	0x000 to 0x7FF
DAC	Reference source	VDDA
	Input range	0x000 to 0xFFF
	Output range	0 to VDDA
	Output type	Unbuffered output
I2C	Role	Master	Configurable to slave mode through HAL function
	Data rate	100 kbps	Configurable through HAL function
	Drive mode of SCL & SDA pins	Open Drain (drives low)	External pull-up resistors are required
LpTimer	Uses WCO (32.768 kHz) as clock source & MCWDT as counter; 1 count = 1/32768 second or 32768 counts = 1 second
SPI	Data rate	100 kpbs	Configurable through HAL function
SPI	Slave select polarity	Active low
UART	Flow control	No flow control	Configurable through HAL function
	Data format	8N1	Configurable through HAL function
	Baud rate	115200	Configurable through HAL function
OPAMP,COMP	Pin (P9_3)	Always 0 V	R162 is not soldered by default
LPCOMP	Pins (P8_2, P8_3)	Always 0 V	R153, R166 are not soldered by default

Resource Reservations

This board uses the Universal Digital Block (UDB) on the MCU to perform SDIO communications with the companion WiFi radio. Resources related to this interface are designated as "reserved" and will not be available to use via the configurators. See the comments in cyreservedresources.list for more details.