Datasheet

Section 10 I/O Ports
Rev.7.00 Mar. 18, 2009 page 501 of 1136
REJ09B0109-0700
10.7.4 Pin Functions
Port 8 pins also function as SCI I/Os, interrupt inputs, and EXDMAC I/Os. The correspondence
between the register specification and the pin functions is shown below.
• P85/EDACK3
*
/(IRQ5)/SCK3
The pin function is switched as shown below according to the combination of bit AMS in
EDMDR_3 of the EXDMAC, bit C/A in SMR in SCI_3, bit P85DDR, and bit ITS5 in ITSR.
Note: * Not supported by the H8S/2375, H8S/2375R, H8S/2373, and H8S/2373R.
Modes 1, 2, 4, 7 (EXPE = 1)
AMS 0 1
CKE1 0 1 ⎯
C/A 0 1 ⎯ ⎯
CKE0 0 1 ⎯ ⎯ ⎯
P85DDR 0 1 ⎯ ⎯ ⎯ ⎯
Pin function P85
input
P85
output
SCK3
output
SCK3
output
SCK3
input
EDACK3
output
IRQ5 interrupt input
*
Note: * IRQ5 input when ITS5 = 1.
Mode 7 (EXPE = 0)
AMS ⎯
CKE1 0 1
C/A 0 1 ⎯
CKE0 0 1 ⎯ ⎯
P85DDR 0 1 ⎯ ⎯ ⎯
Pin function P85
input
P85
output
SCK3
output
SCK3
output
SCK3
input
IRQ5 interrupt input
*
Note: * IRQ5 input when ITS5 = 1.