286
Pin
Selection Method and Pin Functions
PF3/
LWR
/
ADTRG
/
IRQ3
Switches as follows according to the operating mode and the setting of bits
TRGS1, TRGS0, and PF3DDR.
Operating
Mode
Modes 4 to 6
Mode 7
Bus mode
16-bit bus
mode
8-bit bus mode
—
PF3DDR
—
0
1
0
1
Pin function
LWR
output PF3 input
PF3 output
PF3 input
PF3 output
ADTRG
input
*
1
IRQ3
input
*
2
Notes:
*
1
ADTRG
input when TRGS0 = TRGS1 = 1.
*
2 When used as an external interrupt input pin, do not use it as an I/O
pin for other functions.
PF2/
WAIT
/SEG1
7 (H8S/2646,
H8S/2646R,
H8S/2645)
Switches as follows according to the operating mode, and the setting of bits
SGS3 to SGS0, the WAITE bit, and bit PF2DDR.
PF2/
WAIT
/SEG33
(H8S/2648,
H8S/2648R,
H8S/2647)
Operating Mode
Modes 4 to 6
Mode 7
Setting of SGS3 to
SGS0
SEG
output
Port
SEG
output
Port
WAITE
—
0
1
1
—
PF2DDR
—
0
1
—
—
0
1
Pin
function
H8S/2646,
H8S/2646R,
H8S/2645
SEG17
output
PF2
input
PF2
output
WAIT
input
SEG17
output
PF2
input
PF2
output
H8S/2648,
H8S/2648R,
H8S/2647
SEG33
output
SEG33
output
PF0/
IRQ2
Switches as follows according to the PF0DDR bit.
PF0DDR
0
1
Pin function
PF0 input
PF0 output
IRQ2
input
Summary of Contents for H8S/2645
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Page 812: ...780 ...
Page 837: ...805 A 2 Instruction Codes Table A 2 shows the instruction codes ...
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