SH7014 Datasheet, PDF (485/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

16. Pin Function Controller (PFC)
Bit 8⎯PA4 Mode (PA4MD): Selects the function of the PA4/TxD1 pin.
Bit 8
PA4MD
0
1
Description
General input/output (PA4)
Transmit data output (TxD1)
(initial value)
Bit 7⎯Reserved: This bit always reads as 0. The write value should always be 0.
Bit 6⎯PA3 Mode (PA3MD): Selects the function of the PA3/RxD1 pin.
Bit 6
PA3MD
0
1
Description
General input/output (PA3)
Receive data input (RxD1)
(initial value)
Bits 5 and 4⎯PA2 Mode 1, 0 (PA2MD1 and PA2MD0): These bits select the function of the
PA2/SCK0/DREQ0/IRQ0 pin.
Bit 5
PA2MD1
0
1
Bit 4
PA2MD0
0
1
0
1
Description
General input/output (PA2)
Serial clock input/output (SCK0)
DMA transfer request received input (DREQ0)
(PA2 in single-chip mode)
Interrupt request input (IRQ0)
(initial value)
Bit 3⎯Reserved: This bit always reads as 0. The write value should always be 0.
Bit 2⎯PA1 Mode (PA1MD): Selects the function of the PA1/TxD0 pin.
Bit 2
PA1MD
0
1
Description
General input/output (PA1)
Transmit data output (TxD0)
(initial value)
Bit 1⎯Reserved: This bit always reads as 0. The write value should always be 0.
Rev.5.00 Sep. 27, 2007 Page 451 of 716
REJ09B0398-0500