h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 316

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
9.6.3
Port A pins also function as SCI input/output pins (TxD2, RxD2, SCK2) and address bus output
pins (A19 to A16). Port A pin functions are shown in table 9-9.
Table 9-9
Rev. 6.00 Feb 22, 2005 page 256 of 1484
REJ09B0103-0600
Pin
PA3/A19/SCK2
Pin Functions
Port A Pin Functions
Selection Method and Pin Functions
The pin function is switched as shown below according to the operating mode,
bits AE3 to AE0 in PFCR, bit C/
SCI2, and bit PA3DDR.
Operating mode
AE3 to AE0
CKE1
C/
CKE0
PA3DDR
Pin function
Operating mode
CKE1
C/
CKE0
PA3DDR
Pin function
A
A
input
PA3
0
input
PA3
0
0
output
PA3
0
1
0
B'0000 to B'1011
A
output
in SMR and bits CKE0 and CKE1 in SCR of
PA3
0
1
0
output
SCK2
—
1
0
Modes 4 to 6
output
Mode 7
SCK2
output
SCK2
—
—
1
—
1
SCK2
input
—
—
—
1
output
SCK2
—
—
1
B'1100 to B'1111
A19 output
—
—
—
—
SCK2
input
—
—
—
1