Section 8 I/O Ports
Rev. 1.00 Mar. 12, 2008 Page 230 of 1178
REJ09B0403-0100
(2)
Port 8 Data Register (P8DR)
P8DR stores output data for the port 8 pins.
Bit
Bit Name
Initial Value
R/W Description
7 P87DR 0
R/W
6 P86DR 0
R/W
5 P85DR 0
R/W
4 P84DR 0
R/W
3 P83DR 0
R/W
2 P82DR 0
R/W
1 P81DR 0
R/W
0 P80DR 0
R/W
P8DR stores output data for the port 8 pins that are
used as the general output port.
If this register is read, the P8DR values are read for
the bits with the corresponding P8DDR bits set to 1.
For the bits with the corresponding P8DDR bits
cleared to 0, the pin states are read.
(3)
Pin Functions
The relationship between register setting values and pin functions are as follows.
•
P87/
ExIRQ15
/TxD3/
ADTRG
The pin function is switched as shown below according to the combination of the TE bit in
SCR of SCI_3, the SMIF bit in SCMR, and the P87DDR bit.
When the TRGS1 and EXTRGS bits are both set to 1 and the TRGS0 bit is cleared to 0 in
ADCR of the A/D converter, this pin can be used as the
ADTRG
input pin.
When the ISS15 bit in ISSR16 is set to 1, this pin can be used as the
ExIRQ15
input pin. To
use this pin as the
ExIRQ15
input pin, clear the P87DDR bit to 0.
P87DDR 0
1
SMIF 0
1
0
1
0
TE 0
X
0
X
1
P87 input pin
Pin function
ExIRQ15
input pin/
ADTRG
input pin
P87 output pin
TxD3 output pin
[Legend] X: Don't care.
Содержание H8S Family
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Страница 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Страница 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Страница 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Страница 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
Страница 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Страница 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Страница 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Страница 1168: ...Section 30 Platform Environment Control Interface PECI Rev 1 00 Mar 12 2008 Page 1120 of 1178 REJ09B0403 0100...
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Страница 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...