Datasheet

Section 8 I/O Ports
Rev. 3.00 Mar 21, 2006 page 197 of 788
REJ09B0300-0300
• P85/IRQ4/RxD1
The pin function is switched as shown below according to the combination of the RE bit in
SCR of SCI_1 and the P85DDR bit.
RE 0 1
P85DDR 0 1 —
P85 input pin P85 output pin RxD1 input pinPin Function
IRQ4 input pin
*
Note: * When the IRQ4E bit in IER is set to 1, this pin is used as the IRQ4 input pin.
• P84/IRQ3/TxD1
The pin function is switched as shown below according to the combination of the TE bit in
SCR of SCI_1 and the P84DDR bit.
TE 0 1
P84DDR 0 1 —
P84 input pin P84 output pin TxD1 output pinPin Function
IRQ3 input pin
*
Note: * When the IRQ3E bit in IER is set to 1, this pin is used as the IRQ3 input pin.
• P83/LPCPD
*
2
The pin function is switched as shown below according to the P83DDR bit.
P83DDR 0 1
P83 input pin P83 output pinPin Function
LPCPD input pin
*
1
*
2
Notes: 1. When at least one of bits LPC3E to LPC1E is set to 1 in HICR0, this pin is used as the
LPCPD input pin. The LPCPD input pin can only be used in mode 2 or 3 (EXPE = 0).
2. Not supported by the H8S/2148B and H8S/2145B (5-V version).