Datasheet

Section 8 I/O Ports
Rev.7.00 Dec. 24, 2008 Page 244 of 698
REJ09B0074-0700
Table 8.44 PB0 Pin Function
Operating mode Modes 4 to 6 Mode 7
AE3 to AE0 Other than B'0000 B'0000 —
PB0DDR — 0 1 0 1
Pin Function A8
output pin
PB0
input pin
PB0
output pin
PB0
input pin
PB0
output pin
Legend:
×: Don't care.
8.7.6 Port B Input Pull-Up MOS States
The port B has an on-chip input pull-up MOS function that can be controlled by software. The
input pull-up MOS can be specified as the on or off state for individual bits.
Table 8.45 summarizes the input pull-up MOS states.
Table 8.45 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.