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HD6433635SW Datasheet(PDF) 172 Page - Renesas Technology Corp |
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HD6433635SW Datasheet(HTML) 172 Page - Renesas Technology Corp |
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172 / 418 page  158 8.11 Port E 8.11.1 Overview Port E is a 2-bit I/O port, configured as shown in figure 8.10. PE PE 3 2 Port E Figure 8.10 Port E Pin Configuration 8.11.2 Register Configuration and Description Table 8.27 shows the port E register configuration. Table 8.27 Port E Registers Name Abbrev. R/W Initial Value Address Port data register E PDRE R/W H'F0 H'FFD3 Port control register E PCRE W H'F0 H'FFE3 Port Data Register E (PDRE) Bit 76543210 ———— PE 3 PE 2 —— Initial value 11110000 Read/Write ———— R/W R/W —— PDRE is a 2-bit register that stores data for port E pins PE 3 and PE2. If port E is read while PCRE bits are set to 1, the values stored in PDRE are directly read, regardless of the actual pin states. If port E is read while PCRE bits are cleared to 0, the pin states are read. Upon reset, PDRE is initialized to H'F0. |
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