Datasheet

Section 10 I/O Ports
Rev.7.00 Mar. 18, 2009 page 504 of 1136
REJ09B0109-0700
• P81/EDREQ3
*
/(IRQ1)/TxD3
The pin function is switched as shown below according to the combination of bit TE in SCR of
SCI_3, bit P81DDR and bit ITS1 in ITSR.
Note: * Not supported by the H8S/2375, H8S/2375R, H8S/2373, and H8S/2373R.
TE 0 1
P81DDR 0 1 ⎯
P81 input P81 output TxD3 output Pin function
EDREQ3 input
IRQ1 interrupt input
*
Note: * IRQ1 input when ITS1 = 1.
• P80/EDREQ2
*
/(IRQ0)
The pin function is switched as shown below according to the combination of bit P80DDR and
bit ITS0 in ITSR.
Note: * Not supported by the H8S/2375, H8S/2375R, H8S/2373, and H8S/2373R.
P80DDR 0 1
P80 input P80 output Pin function
EDREQ2 input
IRQ0 interrupt input
*
Note: * IRQ0 input when ITS0 = 1.