NEC NEC PD78081(A), User Manual

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64
CHAPTER 4 PORT FUNCTIONS
Table 4-3. Port Mode Register and Output Latch Settings when Using Dual-Functions
P01 to P03 INTP1 to INTP3 Input 1
×
P10 to P17
Note
ANI0 to ANI7 Input 1
×
P35 PCL Output 0 0
P36 BUZ Output 0 0
P100 TI5 Input 1
×
TO5 Output 0 0
P101 TI6 Input 1
×
TO6 Output 0 0
Dual-functions
Name
P
××
PM
××
Input/Output
Pin Name
Note If a read instruction is performed to these pins when they are used as an alternate function, read data is
to be undefined.
Caution When port 7 is used for serial interface, the I/O latch or output latch must be set according to
its function. For the setting methods, see Table 11-2 “Serial Interface Channel 2 Operating Mode
Settings.”
Remarks
×
: don’t care
PM
××
: port mode register
P
××
: port output latch