HD64336901G Renesas Technology, HD64336901G Datasheet - Page 155
HD64336901G
Manufacturer Part Number
HD64336901G
Description
(HD64xxx Series) 16-BIT MICROCONTROLLER
Manufacturer
Renesas Technology
Datasheet
1.HD64336901G.pdf
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9.6
Port B is an input port also functioning as an A/D converter analog input pin and LVD external
comparison voltage input pin. Each pin of the port B is shown in figure 9.6.
Port B has the following register.
9.6.1
PDRB is a general input-only port data register of port B.
Bit
7 to 4
3
2
1
0
Port data register B (PDRB)
Bit Name
PB3
PB2
PB1
PB0
Port B
Port Data Register B (PDRB)
Initial
Value
Figure 9.6 Port B Pin Configuration
R/W
R
R
R
R
Port B
Description
Reserved
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 or external
comparison voltage input pin by LVDCR in low-voltage
detection circuit, 0 is read.
PB3/AN3/ExtU
PB2/AN2/ExtD
PB1/AN1
PB0/AN0
Rev. 1.00, 11/03, page 127 of 376
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