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37
Table 1-8
HD404339 and HD404369 Series Pin Functions (cont)
Type
Symbol
I/O
Function
Port
D
0 to D13
I/O
High voltage D port (HD404339 Series): High voltage
I/O pins (PMOS open drain) that can be accessed in 1-
bit units.
D port (HD404369 Series): Standard I/O pins (CMOS
three state) that can be accessed in 1-bit units.
R0
0 to R03
I/O
R0 port: Standard I/O pins (CMOS three state) that
can be accessed as a 4-bit unit.
R1
0 to R13
I/O
High voltage R1 port (HD404339 Series): High
voltage I/O pins (PMOS open drain) that can be
accessed as a 4-bit unit.
Medium voltage R1 port (HD404369 Series): Medium
voltage I/O pins (NMOS open drain) that can be
accessed as a 4-bit unit.
R2
0 to R23
I/O
High voltage R2 port (HD404339 Series): High
voltage I/O pins (PMOS open drain) that can be
accessed as a 4-bit unit.
Medium voltage R2 port (HD404369 Series): Medium
voltage I/O pins (NMOS open drain) that can be
accessed as a 4-bit unit.
R3
0 to R33
I/O
R3 port: Standard I/O pins (CMOS three state) that
can be accessed as a 4-bit unit.
R4
0 to R43
I/O
R4 port: Standard I/O pins (CMOS three state) that
can be accessed as a 4-bit unit.
R5
0 to R53
I/O
R5 port: Standard I/O pins (CMOS three state) that
can be accessed as a 4-bit unit.
R6
0 to R63
I/O
R6 port: Standard I/O pins (CMOS three state) that
can be accessed as a 4-bit unit.
R7
0 to R72
I/O
R7 port: Three-bit standard I/O pins (CMOS three
state).
R8
0 to R83
I/O
High voltage R8 port (HD404339 Series): High
voltage I/O pins (PMOS open drain) that can be
accessed as a 4-bit unit.
R8 port (HD404369 Series): Standard I/O pins (CMOS
three state) that can be accessed as a 4-bit unit.
R9
0 to R93
I/O
High voltage R9 port (HD404339 Series): High
voltage I/O pins (PMOS open drain) that can be
accessed as a 4-bit unit.
R9 port (HD404369 Series): Standard I/O pins (CMOS
three state) that can be accessed as a 4-bit unit.