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Section 8 I/O Ports
8.2.6
Port A
(1)
PA7/Bφ
The pin function is switched as shown below according to the PA7DDR bit setting.
Module Name
Pin Function
I/O port
Bφ output* (initial setting)
PA7 input
The type of φ to be output switches according to the POSEL1 bit in SCKCR. For details,
Note:
*
see section 17.1.1, System Clock Control Register (SCKCR).
(2)
PA6/AS/AH/BS-B
The pin function is switched as shown below according to the combination of bus controller
register, port function control register (PFCR), and the PA6DDR bit settings.
Module Name
Pin Function
AH output
Bus controller
BS-B output
AS output
(initial setting)
I/O port
PA6 output
PA6 input
Rev.2.00 Jun. 28, 2007 Page 276 of 666
REJ09B0311-0200
Setting
I/O Port
PA7DDR
1
0
Bus Controller
AH_OE
BS-B_OE
1
0
1
0
0
0
0
0
0
Setting
I/O Port
AS_OE
PA6DDR
1
0
1
0
0
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