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CP80S54 Datasheet, PDF (11/47 Pages) List of Unclassifed Manufacturers – EPROM/ROM-Based 8-Bit Microcontroller Series
CP80S54/56
= 1, Enable the input change interrupt/wake-up function of IOB4 pin.
WUB5 : = 0, Disable the input change interrupt/wake-up function of IOB5 pin.
= 1, Enable the input change interrupt/wake-up function of IOB5 pin.
WUB6 : = 0, Disable the input change interrupt/wake-up function of IOB6 pin.
= 1, Enable the input change interrupt/wake-up function of IOB6 pin.
WUB7 : = 0, Disable Enable the input change interrupt/wake-up function of IOB7 pin.
= 1, Enable the input change interrupt/wake-up function of IOB7 pin.
2.1.9 PCHBUF (High Byte Buffer of Program Counter)
Address
Name
B7
B6
B5
B4
B3
B2
B1
B0
0Ah (r/w) PCHBUF
-
-
-
-
-
2 MSBs Buffer of PC
There is only 1 bit in CP80S54/S54E/55/55E. And there are 2 bits in CP80S56/S56E.
See 2.1.3 for detail description.
2.1.10 PDCON (Pull-down Control Register)
Address
0Bh (r/w)
Name
PDCON
B7
/PDB3
B6
/PDB2
B5
/PDB1
B4
/PDB0
B3
/PDA3
B2
/PDA2
B1
/PDA1
B0
/PDA0
/PDA0 : = 0, Enable the internal pull-down of IOA0 pin.
= 1, Disable the internal pull-down of IOA0 pin.
/PDA1 : = 0, Enable the internal pull-down of IOA1 pin.
= 1, Disable the internal pull-down of IOA1 pin.
/PDA2 : = 0, Enable the internal pull-down of IOA2 pin.
= 1, Disable the internal pull-down of IOA2 pin.
/PDA3 : = 0, Enable the internal pull-down of IOA3 pin.
= 1, Disable the internal pull-down of IOA3 pin.
/PDB0 : = 0, Enable the internal pull-down of IOB0 pin.
= 1, Disable the internal pull-down of IOB0 pin.
/PDB1 : = 0, Enable the internal pull-down of IOB1 pin.
= 1, Disable the internal pull-down of IOB1 pin.
/PDB2 : = 0, Enable the internal pull-down of IOB2 pin.
= 1, Disable the internal pull-down of IOB2 pin.
/PDB3 : = 0, Enable the internal pull-down of IOB3 pin.
= 1, Disable the internal pull-down of IOB3 pin.
Rev0.1 Nov 30, 2005
P.11/AT8PS54/S56