D12320VF25IV Datasheet, PDF (439/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
Port B MOS Pull-Up Control Register (PBPCR)
Bit
:
7
6
5
4
3
2
1
0
PB7PCR PB6PCR PB5PCR PB4PCR PB3PCR PB2PCR PB1PCR PB0PCR
Initial value :
0
0
0
0
0
0
0
0
R/W
: R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PBPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port B on an individual bit basis.
When a PBDDR bit is cleared to 0 (input port setting) in mode 6 or 7, setting the corresponding
PBPCR bit to 1 turns on the MOS input pull-up for the corresponding pin.
PBPCR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
9.9.3 Pin Functions
Modes 4 and 5: In modes 4 and 5, port B pins are automatically designated as address outputs.
Port B pin functions in modes 4 and 5 are shown in figure 9.9.
Port B
A₁₅ (output)
A₁₄ (output)
A₁₃ (output)
A₁₂ (output)
A₁₁ (output)
A₁₀ (output)
A₉ (output)
A₈ (output)
Figure 9.9 Port B Pin Functions (Modes 4 and 5)
Rev.6.00 Sep. 27, 2007 Page 407 of 1268
REJ09B0220-0600