Mos Input Pull-Up Function - Renesas H8S/2319 series Hardware Manual

Mode 7 * : In mode 7, port E pins function as I/O ports. Input or output can be specified for each
pin on a bit-by-bit basis. Setting PEDDR bits to 1 makes the corresponding port E pins output
ports, while clearing the bits to 0 makes the pins input ports.
Port E pin functions in mode 7 are shown in figure 8-22.
Note: * Modes 6 and 7 are not available in the ROMless versions.
8.10.4

MOS Input Pull-Up Function

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 modes 4, 5, and 6 when 8-bit bus mode is selected, or in
mode 7, and can be specified as on or off on an individual bit basis.
When PEDDR bits are cleared to 0 in mode 4, 5, or 6 when 8-bit bus mode is selected, or in mode
7, setting the corresponding PEPCR bits to 1 turns on the MOS input pull-up for that pins.
The MOS input pull-up function is in the off state after a reset, and in hardware standby mode.
The prior state is retained in software standby mode.
Table 8-18 summarizes the MOS input pull-up states.
Rev. 5.00, 12/03, page 276 of 1088
Port E
Figure 8-22 Port E Pin Functions (Mode 7)
PE7 (I/O)
PE6 (I/O)
PE5 (I/O)
PE4 (I/O)
PE3 (I/O)
PE2 (I/O)
PE1 (I/O)
PE0 (I/O)