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CHAPTER 3 FEATURES OF ARCHITECTURE AND MEMORY MAP
57
User’s Manual U10676EJ3V0UM
Figure 3-7.
µ
PD754244 I/O Map (6/8)
Hardware name (symbol)
Number of bits that
Bit
Address R/W
can be manipulated
manipulation Remarks
b3 b2 b1 b0 1-bit 4-bit 8-bit
addressing
FD0H Unmounted
to
FD3H
FD4H Programmable threshold port (PTH0) R
– mem.bit
FD5H Unmounted
FD6H R/W ––
mem.bit A write to bit 4 or bit 5 is invalid, and the read
Programmable threshold port mode register (PTHM)
value is undefined.
FD8H Unmounted
to
FDBH
FDCH
PO3
Note
–––
R/W ––
– A write to an unmounted area is invalid, and
Pull-up resistor specification register group A (POGA)
the read value is undefined.
–
PO6
Note
––
FDEH
–––PO8
Note
R/W –– –
Pull-up resistor specification register group B (POGB)
––––
Note These are not registered as reserved words.
................................................................................
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................................................................................
................................................................................
................................................................................
PTHM3
Note
PTHM2
Note
PTHM1
Note
PTHM0
Note
PTHM7
Note
PTHM6
Note
––
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