h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 234
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h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
- Current page: 234 of 766
- Download datasheet (5Mb)
Section 9 I/O Ports
• P50/TxD2
The pin function is switched as shown below according to a combination of the TE bit in SCR of
SCI_2 and the P50DDR bit.
9.6
Port 9 is an 8-bit input-only port. Port 9 pins also function as A/D converter analog input pins.
Port 9 pin functions are the same in all operating modes.
• Port 9 Register (PORT9)
9.6.1
PORT9 is a read-only register that shows the pin states.
Note:
9.6.2
Port 9 pins also function as A/D converter analog input pins.
Rev. 2.00 Dec. 05, 2005 Page 196 of 724
REJ09B0200-0200
TE
P50DDR
Pin function
Bit
7
6
5
4
3
2
1
0
*
Port 9
Port 9 Register (PORT9)
Pin Functions
Bit Name
P97
P96
P95
P94
P93
P92
P91
P90
Determined by state of pins P97 to P90.
Initial
Value
*
*
*
*
*
*
*
*
P50 input pin
R/W
R
R
R
R
R
R
R
R
0
Description
The pin states are always read when PORT9 read is
performed.
0
P50 output pin
1
TxD2 output pin
1
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