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AT91SAM7XC256-AU Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT91SAM7XC256-AU Datasheet(HTML) 5 Page - ATMEL Corporation |
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5 / 38 page  5 6209AS–ATARM–20-Oct-05 AT91SAM7XC256/128 Preliminary 4. Signal Description Table 4-1. Signal Description List Signal Name Function Type Active Level Comments Power VDDIN Voltage Regulator and ADC Power Supply Input Power 3V to 3.6V VDDOUT Voltage Regulator Output Power 1.85V VDDFLASH Flash and USB Power Supply Power 3V to 3.6V VDDIO I/O Lines Power Supply Power 3V to 3.6V VDDCORE Core Power Supply Power 1.65V to 1.95V VDDPLL PLL Power 1.65V to 1.95V GND Ground Ground Clocks, Oscillators and PLLs XIN Main Oscillator Input Input XOUT Main Oscillator Output Output PLLRC PLL Filter Input PCK0 - PCK3 Programmable Clock Output Output ICE and JTAG TCK Test Clock Input No pull-up resistor TDI Test Data In Input No pull-up resistor. TDO Test Data Out Output TMS Test Mode Select Input No pull-up resistor. JTAGSEL JTAG Selection Input Pull-down resistor. Flash Memory ERASE Flash and NVM Configuration Bits Erase Command Input High Pull-down resistor Reset/Test NRST Microcontroller Reset I/O Low Pull-Up resistor, Open Drain Output TST Test Mode Select Input High Pull-down resistor Debug Unit DRXD Debug Receive Data Input DTXD Debug Transmit Data Output AIC IRQ0 - IRQ1 External Interrupt Inputs Input FIQ Fast Interrupt Input Input PIO PA0 - PA30 Parallel IO Controller A I/O Pulled-up input at reset PB0 - PB30 Parallel IO Controller B I/O Pulled-up input at reset |
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