Datasheet
Section 9 I/O Ports
Rev.6.00 Mar. 18, 2009 Page 388 of 980
REJ09B0050-0600
9.12.6 Port E MOS Input Pull-Up States
Port E has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in 8-bit bus mode. MOS input pull-up can be specified as on or
off on a bit-by-bit basis. In 8-bit bus mode, when a PEDDR bit is cleared to 0, setting the
corresponding PEPCR bit to 1 turns on the MOS input pull-up for that pin.
Table 9.6 summarizes the MOS input pull-up states.
Table 9.6 MOS Input Pull-Up States (Port E)
Mode
Reset
Hardware
Standby Mode
Software
Standby Mode
In Other
Operations
1, 2, and 4 8-bit bus Off Off On/Off On/Off
16-bit bus Off Off
Legend:
Off: MOS input pull-up is always off.
On/Off: On when PEDDR = 0 and PEPCR = 1; otherwise off.
9.13 Port F
Port F is an 8-bit I/O port that also has other functions. The port F has the following registers. For
details on the port function control register 0, refer to section 9.8.6, Port Function Control Register
0 (PFCR0), and for details on the port function control register 2, refer to section 9.3.5, Port
Function Control Register 2 (PFCR2).
• Port F data direction register (PFDDR)
• Port F data register (PFDR)
• Port F register (PORTF)
• Port Function Control Register 0 (PFCR0)
• Port Function Control Register 2 (PFCR2)