Specifications

Differences in GPIO Implementation in ’240x

5-4

5.2 Differences in GPIO Implementation in ’240x

There are several differences in the GPIO implementation in ’240x when

compared with ’241/’242/’243. When the bit value in an MCRx register (OCRx

when the bit value is 0, the GPIO function is always chosen. There are no ex-

ceptions, as in the case of ’24x, where XF, BIO, and CLKOUT pins have a dif-

ferent configuration.

Also, some pins (such as XF and CLKOUT) are paired with different GPIO pins

compared to ’24x (i.e., the “primary function/GPIO pin” mapping/pairing is not

exactly identical to ’24x. Due to the addition of two GPIO ports, “E” and “F”, a

new MUX Control register (MCRC) has been added.