Section 8
I/O Ports
Rev. 1.00 Mar. 12, 2008 Page 211 of 1178
REJ09B0403-0100
(7)
Pin Functions
The relationship between the register settings and the pin function is shown below.
(a)
Normal Extended Mode
•
P47 to P44
The pin function is switched as shown below according to the combination of the CS256E and
IOSE bits in SYSCR, the ADFULLE bit in BCR2 of the BSC, and the P4nDDR bit. Address 13 in
the table below is expressed by the following logical expression.
Address 13 = 1:
ADFULLE
•
CS256E
•
IOSE
P4nDDR 0
1
Address 13
X
0
1
Pin
function
P4n input pin
Am output pin
P4n output pin
[Legend] m = 15 to 12, n = 7 to 4
X: Don't care.
•
P43 to P40
Port pins 43 to 40 function as bidirectional data bus pins in 16-bit bus extension, and can be used
as general I/O port in 8-bit bus extension.
(b)
Address-Data Multiplex Extended Mode
Port pins 47 to 44 are automatically set to function as address bus pins. Port pins 43 to 40 can be
used as general I/O port pins.
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...