Advertisement
3.2.3
Pin Function Control Register (PFCR)
Bit
:
CSS07
Initial value
:
R/W
R/W
:
PFCR is an 8-bit readable-writable register that carries out CS selection control for PG4 and PG1
pins, LCAS selection control for PF2 and PF6 pins, and address output control during extension
modes with ROM.
PFCR is initialized by H'0D/H'00 by a power-on reset or a hardware standby mode. The
immediately previous state is maintained in manual reset or software standby mode.
Bit 7—CS0/CS7 Select (CSS07): Selects the CS output content for PG4 pin. In modes 4 to 6, the
selected CS is output by setting the corresponding DDR to 1.
Bit 7
CSS07
Description
Select CS0.
0
Select CS7.
1
Bit 6—CS3/CS6 Select (CSS36): Selects the CS output content for PG1 pin. In modes 4 to 6, the
selected CS is output by setting the corresponding DDR to 1.
Bit 6
CSS36
Description
Select CS3.
0
Select CS6
1
7
6
CSS36
BUZZE
0
0
R/W
R/W
5
4
LCASS
AE3
0
0
1/0
R/W
R/W
3
2
AE2
AE1
1/0
R/W
R/W
1
0
AE0
0
1/0
R/W
(Initial value)
(Initial value)
71
Advertisement
