CMS32L051 User Manual |Chapter 2 Pin Function
www.mcu.com.cn 32 / 703
Configuration Instructions:
➢ When using the port's concurrent output function, the port must be configured in digital mode
(PMCxx=0).
➢ When using the port's concurrent output function, the port must be configured in output mode (push-
pull or open-drain) (PMxx=0).
➢ When using the GPIO function or multiplexing function of the P121, P122 port, verify that the X1
oscillation mode and external clock input mode are not turned on. Refer to Chapter 4 4.3.1 of Clock
Generation Circuits
➢ When using the GPIO function or multiplexing function of the P123, P124 port, verify that the XT1
oscillation mode and external clock input mode are not turned on. Refer to Chapter 4 4.3.1 of Clock
Generation Circuits
➢ Ports P60 and P61 are dedicated N-channel open-drain output ports and do not support push-pull
concurrent outputs.
➢ When using the concurrent output function of the port, it is necessary to set the port output latch Pxx,
and the configuration method is detailed in Table2-2 Configuration method for the concurrent output
function.
➢ The data port (SDAxx) of the Easy IIC, the clock port of the IICA (SCLA0) and the data port of the
IICA (SDAA0) support bidirectional communication, and only the SDI00PCFG, SCLA0PCFG,
SDAA0PCFG registers need to be configured when setting the mapped port, and there is no need to
configure the PxxCFG register.
To Next Page
Loading...