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H8S/2214 数据表(PDF) 13 Page - Renesas Technology Corp |
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H8S/2214 数据表(HTML) 13 Page - Renesas Technology Corp |
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13 / 936 page ![]() Rev.4.00 Sep. 18, 2008 Page xiii of lx REJ09B0189-0400 Item Page Revisions (See Manual for Details) 9.8.2 Register Configuration (1) Port B Data Direction Register (PBDDR) 323 Description added ... PBDDR cannot be read; if it is, an undefined value will be read. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. 9.9.2 Register Configuration (1) Port C Data Direction Register (PCDDR) 331 Description added ... PCDDR cannot be read; if it is, an undefined value will be read. Setting a PCDDR bit to 1 makes the corresponding port C pin an output pin, while clearing the bit to 0, makes the pin an input pin. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. 9.10.2 Register Configuration (1) Port D Data Direction Register (PDDDR) 338 Description added ... PDDDR cannot be read; if it is, an undefined value will be read. Setting a PDDDR bit to 1 makes the corresponding port C pin an output pin, while clearing the bit to 0, makes the pin an input pin. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. 9.11.2 Register Configuration (1) Port E Data Direction Register (PEDDR) 343 Description added ... PEDDR cannot be read; if it is, an undefined value will be read. Setting a PEDDR bit to 1 makes the corresponding port C pin an output pin, while clearing the bit to 0, makes the pin an input pin. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. 9.12.2 Register Configuration (1) Port F Data Direction Register (PFDDR) 349 Description added ... PFDDR cannot be read; if it is, an undefined value will be read. Setting a PFDDR bit to 1 makes the corresponding port C pin an output pin, while clearing the bit to 0, makes the pin an input pin. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. 9.13.2 Register Configuration (1) Port G Data Direction Register (PGDDR) 354 Description added ... Also, bits 7 to 5 are reserved, and will return an undefined value if read. Setting a PGDDR bit to 1 makes the corresponding port C pin an output pin, while clearing the bit to 0, makes the pin an input pin. Since this register is a write-only register, do not use bit manipulation instructions to write to this register. See section 2.10.4, Access Methods for Registers with Write-Only Bits. |
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