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SH7052 Datasheet(PDF) 645 Page - Renesas Technology Corp |
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SH7052 Datasheet(HTML) 645 Page - Renesas Technology Corp |
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645 / 919 page  619 18.3.6 Port C IO Register (PCIOR) Bit: 15 14 13 12 11 10 9 8 —— —— ——— — Initial value: 0 0 0 0 0 0 0 0 R/W: R R R R R R R R Bit: 7 6 5 4 3 2 1 0 — — — PC4IOR PC3IOR PC2IOR PC1IOR PC0IOR Initial value: 0 0 0 0 0 0 0 0 R/W: R R R R/W R/W R/W R/W R/W The port C IO register (PCIOR) is a 16-bit readable/writable register that selects the input/output direction of the 5 pins in port C. Bits PC4IOR to PC0IOR correspond to pins PC4/ IRQ0 to PC0/TxD1. PCIOR is enabled when port C pins function as general input/output pins (PC4 to PC0), and disabled otherwise. When port C pins function as PC4 to PC0, a pin becomes an output when the corresponding bit in PCIOR is set to 1, and an input when the bit is cleared to 0. PCIOR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), and in hardware standby mode. It is not initialized in software standby mode or sleep mode. |
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