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HD6432351 Datasheet, PDF (387/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise
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Modes 2 and 6 [H8S/2351 Only]: In modes 2 and 6, port B pins function as address outputs or
input ports. Input or output can be specified on an individual bit basis. Setting a PBDDR bit to 1
makes the corresponding port B pin an address output, while clearing the bit to 0 makes the pin an
input port.
Port B pin functions in modes 2 and 6 are shown in figure 9-13.
Port B
When PBDDR = 1
A15 (output)
A14 (output)
A13 (output)
A12 (output)
A11 (output)
A10 (output)
A9 (output)
A8 (output)
When PBDDR = 0
PB7 (input)
PB6 (input)
PB5 (input)
PB4 (input)
PB3 (input)
PB2 (input)
PB1 (input)
PB0 (input)
Figure 9-13 Port B Pin Functions (Modes 2 and 6)
Modes 3 and 7 [H8S/2351 Only]: In modes 3 and 7, port B pins function as I/O ports. Input or
output can be specified for each pin on an individual bit basis. Setting a PBDDR bit to 1 makes the
corresponding port B pin an output port, while clearing the bit to 0 makes the pin an input port.
Port B pin functions in modes 3 and 7 are shown in figure 9-14.
Port B
PB7 (I/O)
PB6 (I/O)
PB5 (I/O)
PB4 (I/O)
PB3 (I/O)
PB2 (I/O)
PB1 (I/O)
PB0 (I/O)
Figure 9-14 Port B Pin Functions (Modes 3 and 7)
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