SH7046 Datasheet, PDF (500/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Section 17 I/O Ports
17.4 Port F
Port F is an input-only port with the eight pins shown in figure 17.4.
Port F
PF15 (input) / AN15 (input)
PF14 (input) / AN14 (input)
PF13 (input) / AN13 (input)
PF12 (input) / AN12 (input)
PF11 (input) / AN11 (input)
PF10 (input) / AN10 (input)
PF9 (input) / AN9 (input)
PF8 (input) / AN8 (input)
Figure 17.4 Port F
17.4.1 Register Description
Port F is an 8-bit input-only port. Port F has the following register. For details on register
addresses and register states during each processing, refer to appendix A, Internal I/O Register.
• Port F data register (PFDR)
17.4.2 Port F Data Register (PFDR)
The port F data register (PFDR) is a 16-bit read-only register that stores port F data.
Bits PF15DR to PF8DR correspond to pins PF15 to PF8 (multiplexed functions omitted here).
Any value written into these bits is ignored, and there is no effect on the state of the pins. When
any of the bits are read, the pin state rather than the bit value is read directly. However, when an
A/D converter analog input is being sampled, values of 1 are read out. Table 17.4 summarizes port
F data register read/write operations.
Rev. 4.00 Dec 05, 2005 page 456 of 564
REJ09B0270-0400