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H838532H датащи(PDF) 200 Page - Renesas Technology Corp |
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H838532H датащи(HTML) 200 Page - Renesas Technology Corp |
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200 / 508 page ![]() Section 8 I/O Ports Rev. 1.00 May 30, 2008 Page 180 of 484 REJ09B0436-0100 Pin Pin Functions and Selection Method P4 1/RXD32 The pin function depends on bit RE 32 in SCR32 and bit PCR41 in PCR4. RE 32 0 1 PCR4 1 0 1 * Pin function P4 1 input pin P4 1 output pin RXD 32 input pin P4 0/SCK32 The pin function depends on bits CKE321 and CKE320 in SCR32, bit COM32 in SMR32, and bit PCR4 0 in PCR4. CKE321 0 1 CKE320 0 1 * COM32 0 1 * * PCR4 0 0 1 * * Pin function P4 0 input pin P4 0 output pin SCK 32 output pin SCK 32 input pin *: Don’t care 8.4.4 Pin States Table 8.10 shows the port 4 pin states in each operating mode. Table 8.10 Port 4 Pin States Pins Reset Sleep Subsleep Standby Watch Subactive Active P4 3/IRQ0 P4 2/TXD32 P4 1/RXD32 P4 0/SCK32 High- impedance Retains previous state Retains previous state High- impedance Retains previous state Functional Functional |
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