Datasheet

Table Of Contents
Section 9 I/O Ports
REJ09B0140-0900 Rev. 9.00 Page 253 of 846
Sep 16, 2010
H8S/2215 Group
9.6.7 Port A Input Pull-Up MOS Function
Port A 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 9.26 summarizes the input pull-up MOS states.
Table 9.26 Input Pull-Up MOS States (Port A)
Pins
Power-On
Reset
Hardware
Standby
Mode
Manual
Reset
Software
Standby
Mode
In Other
Operations
Address output, port
output, SCI output
OFF OFF
Port input, SCI input ON/OFF
Legend:
OFF: Input pull-up MOS is always off.
ON/OFF: On when PADDR = 0 and PAPCR = 1; otherwise off.
9.7 Port B
Port B is an 8-bit I/O port that also has address bus (A15 to A8) output. The port B has the
following registers. Internal I/O Register.
Port B data direction register (PBDDR)
Port B data register (PBDR)
Port B register (PORTB)
Port B MOS pull-up control register (PBPCR)