HD64F2149 Datasheet, PDF (284/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

8.12.3 Pin Functions
Port B pins also function as host interface (XBS) I/O pins (CS3, CS4, HIRQ3, HIRQ4), host
interface (LPC) I/O pins (LSCI, LSMI), wakeup event interrupt input pins (WUE7 to WUE0), and
data bus I/O pins (D7 to D0). The port B pin functions are shown in table 8.24.
Table 8.24 Port B Pin Functions
Pin
PB7/D7/WUE7
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
the operating mode, bit PB7DDR, and bit ABW in WSCR.
Operating
mode
Modes 1, 2, 3
(EXPE = 1)
Modes 2, 3
(EXPE = 0)
ABW
0
1
—
PB7DDR
—
0
1
0
1
Pin function
D7
I/O pin
PB7
PB7
PB7
PB7
input pin output pin input pin output pin
WUE7 input pin
Except when used as a data bus pin, this pin can always be used as the
WUE7 input pin.
PB6/D6/WUE6
The pin function is switched as shown below according to the combination of
the operating mode, bit PB6DDR, and bit ABW in WSCR.
Operating
mode
Modes 1, 2, 3
(EXPE = 1)
Modes 2, 3
(EXPE = 0)
ABW
0
1
—
PB6DDR
—
0
1
0
1
Pin function
D6
I/O pin
PB6
PB6
PB6
PB6
input pin output pin input pin output pin
WUE6 input pin
Except when used as a data bus pin, this pin can always be used as the
WUE6 input pin.
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