HD64F2149 Datasheet, PDF (288/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Pin
PB0/D0/WUE0/
HIRQ3/LSMI
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
the operating mode, bits HI12E and CS3E in SYSCR2, bit ABW in WSCR, and
bit PB0DDR.
Operating
mode
Modes 1, 2, 3
(EXPE = 1)
Modes 2, 3
(EXPE = 0)
LSMIE
—
0
1
HI12E
—
Either cleared to 0 1
—*
CS3E
—
1
—*
ABW
0
1
—
—
—
PB0DDR
—
0
1
0
1
1
—*
Pin function D0
I/O pin
PB0
input
pin
PB0
output
pin
PB0
input
pin
PB0
output
pin
HIRQ3 LSMI
output output
pin
pin
LSMI input pin
WUE0 input pin
Except when used as a data bus pin, this pin can always be used as the
WUE0 input pin.
The HIRQ3 output pin and LSMI I/O pin can only be used in mode 2 or 3
(EXPE = 0).
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