Datasheet

Table Of Contents
Section 9 I/O Ports
Page 258 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
9.7.6 Port B Input Pull-Up MOS Function
Port B has a built-in input pull-up MOS function that can be controlled by software. Input pull-up
MOS can be specified as on or off for individual bits.
Table 9.35 summarizes the input pull-up MOS states.
Table 9.35 Input Pull-Up MOS States (Port B)
Pins
Power-On
Reset
Hardware
Standby
Mode
Manual
Reset
Software
Standby
Mode
In Other
Operations
Address output, port
output
OFF OFF
Port input ON/OFF
Legend:
OFF: Input pull-up MOS is always off.
ON/OFF: On when PBDDR = 0 and PBPCR = 1; otherwise off.
9.8 Port C
Port C is an 8-bit I/O port that also has address bus (A7 to A0) output pins. The port C has the
following registers.
Port C data direction register (PCDDR)
Port C data register (PCDR)
Port C register (PORTC)
Port C pull-up MOS control register (PCPCR)
Note: When using the on-chip USB in mode 6, set PCDDR so that addresses A7 to A0 are
output from PC7 to PC0.