Datasheet

Section 8 I/O Ports
Rev. 3.00 Mar 21, 2006 page 203 of 788
REJ09B0300-0300
• P93/RD/IOR
The pin function is switched as shown below according to the combination of operating mode,
the HI12E bit in SYSCR2, and the P93DDR bit.
Operating
Mode
Modes 1, 2, 3 (EXPE = 1) Modes 2, 3 (EXPE = 0)
HI12E — 0 1
P93DDR — 0 1 —
Pin Function RD output pin P93 input pin P93 output pin IOR input pin
• P92/IRQ0
P92DDR 0 1
P92 input pin P92 output pinPin Function
IRQ0 input pin*
Note: * When bit IRQ0E in IER is set to 1, this pin is used as the IRQ0 input pin.
• P91/IRQ1
P91DDR 0 1
P91 input pin P91 output pinPin Function
IRQ1 input pin
*
Note: * When bit IRQ1E in IER is set to 1, this pin is used as the IRQ1 input pin.