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Rev. 1.0, 07/01, page 130 of 372
9.6.1 Port Data Register B(PDRB)
PDRB is a general input-only port data register of port B.
Bit Bit Name Initial Value R/W Description
7
6
5
4
3
2
1
0
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
−
−
−
−
−
−
−
−
R
R
R
R
R
R
R
R
The input value of each pin is read by reading this register.
However, if a port B pin is designated as an analog input
channel by ADCSR in A/D converter, 0 is read.