HD64F3694FXV Datasheet, PDF (160/452 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
9.6 Port B
Port B is an input port also functioning as an A/D converter analog input pin. Each pin of the port
B is shown in figure 9.6.
Port B
PB7/AN7
PB6/AN6
PB5/AN5
PB4/AN4
PB3/AN3
PB2/AN2
PB1/AN1
PB0/AN0
Figure 9.6 Port B Pin Configuration
Port B has the following register.
• Port data register B (PDRB)
9.6.1 Port Data Register B (PDRB)
PDRB is a general input-only port data register of port B.
Initial
Bit
Bit Name Value R/W Description
7
PB7

R
The input value of each pin is read by reading this
6
PB6

R
register.
5
PB5

R
However, if a port B pin is designated as an analog input
channel by ADCSR in A/D converter, 0 is read.
4
PB4

R
3
PB3

R
2
PB2

R
1
PB1

R
0
PB0

R
Rev.5.00 Nov. 02, 2005 Page 130 of 418
REJ09B0028-0500