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.
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Page 1226: ...Rev 1 00 Mar 12 2008 Page 1178 of 1178 REJ09B0403 0100...
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Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...