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H8SX/1663 Datasheet(PDF) 511 Page - Renesas Technology Corp |
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H8SX/1663 Datasheet(HTML) 511 Page - Renesas Technology Corp |
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511 / 1158 page  Section 9 I/O Ports Rev.1.00 Jun. 07, 2006 Page 459 of 1102 REJ09B0294-0100 (4) PA4/ LHWR/LUB The pin function is switched as shown below according to the combination of operating mode, EXPE bit, bus controller register, port function control register (PFCR), and the PA4DDR bit settings. Setting Bus Controller I/O Port Module Name Pin Function LUB_OE*2 LHWR_OE*2 PA4DDR LUB output*1 1 Bus controller LHWR output*1 (initial setting E) 1 PA4 output 0 0 1 I/O port PA4 input (initial setting S) 0 0 0 [Legend] Initial setting E: Initial setting in external extended mode Initial setting S: Initial setting in single-chip mode Notes: 1. Valid in external extended mode (EXPE = 1) 2. When the byte control SRAM space is accessed while the byte control SRAM space is specified or while LHWROE = 1, this pin functions as the LUB output; otherwise, the LHWR output. |
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