SH7046 Datasheet, PDF (495/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Section 17 I/O Ports
Table 17.1 Port A Data Register L (PADRL) Read/Write Operations
Bits 15 to 0:
PAIORL
0
1
Pin Function
General input
Other than
general input
General output
Other than
general output
Read
Write
Pin state
Can write to PADRL, but it has no effect on pin
state
Pin state
Can write to PADRL, but it has no effect on pin
state
PADRL value Value written is output from pin
PADRL value Can write to PADRL, but it has no effect on pin
state
17.2 Port B
Port B is an input/output port with the four pins shown in figure 17.2.
Port B
PB5 (I/O) / IRQ3 (input) / POE3 (input)
PB4 (I/O) / IRQ2 (input) / POE2 (input)
PB3 (I/O) / IRQ1 (input) / POE1 (input)
PB2 (I/O) / IRQ0 (input) / POE0 (input)
Figure 17.2 Port B
17.2.1 Register Descriptions
Port B is a 4-bit input/output port. Port B has the following register. For details on register
addresses and register states during each processing, refer to appendix A, Internal I/O Register.
• Port B data register (PBDR)
Rev. 4.00 Dec 05, 2005 page 451 of 564
REJ09B0270-0400