ST10R272L - PARALLEL PORTS
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Enabling the CLKOUT function automatically enables the P3.15 output driver. Setting bit
DP3.15=’1’ is not required.
Pin P3.12 (BHE/WRH) is one more pin with an alternate output function. However, its
structure is slightly different (see figure below), because after reset the BHE or WRH
function must be used depending on the system start-up configuration. In these cases there
is no possibility to program any port latches before. Thus the appropriate alternate function
Figure 35 Block diagram of port 3 pin with alternate input or alternate output function
y = 13, 11...0
