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H8SX/1663R データシート(PDF) 55 Page - Renesas Technology Corp |
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H8SX/1663R データシート(HTML) 55 Page - Renesas Technology Corp |
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55 / 1504 page ![]() Section 1 Overview Rev. 2.00 Sep. 24, 2008 Page 23 of 1468 REJ09B0412-0200 1.4.3 Pin Functions Table 1.5 Pin Functions Classification Pin Name I/O Description V CC Input Power supply pins. Connect them to the system power supply. V CL Input Connect this pin to V SS via a 0.1-µF capacitor (The capacitor should be placed close to the pin). V SS Input Ground pins. Connect them to the system power supply (0 V). PLLV CC Input Power supply pin for the PLL circuit. Connect them to the system power supply. PLLV SS Input Ground pin for the PLL circuit. DrV CC Input Power supply pin for the on-chip USB transceiver. Connect this pin to the system power supply. Power supply DrV SS Input Ground pin for the on-chip USB transceiver. XTAL Input EXTAL Input Pins for a crystal resonator. An external clock signal can be input through the EXTAL pin. For an example of this connection, see section 27, Clock Pulse Generator. OSC1 Input The 32.768 KH crystal resonator is connected to this pin. OSC2 Input The 32.768 KH crystal resonator is connected to this pin. B φ Output Outputs the system clock for external devices. Clock SDRAM φ Output When connecting the synchronous DRAM, connect it to the CLK pin of synchronous DRAM. For details, see section 9, Bus Controller (BSC). MD3 to MD0 Input Pins for setting the operating mode. The signal levels on these pins must not be changed during operation. Operating mode control MD_CLK Input This pin changes the multiplication ratio of the clock oscillator. Do not change values on this pin during operation. RES Input Reset signal input pin. This LSI enters the reset state when this signal goes low. STBY Input This LSI enters hardware standby mode when this signal goes low. System control EMLE Input Input pin for the on-chip emulator enable signal. The signal level should normally be fixed low. TRST Input TMS Input TDI Input TCK Input On-chip emulator TDO Output On-chip emulator pins or boundary scan pins. When the EMLE pin is driven high, these pins are dedicated for the on-chip emulator. When the EMLE pin is driven low and to mode 3, these pins are dedicated for the boundary scan mode. |
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