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AT91SAM7A3-AJ Datasheet(PDF) 4 Page - ATMEL Corporation |
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AT91SAM7A3-AJ Datasheet(HTML) 4 Page - ATMEL Corporation |
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4 / 32 page  4 Preliminary AT91SAM7A3 Preliminary 6042AS–ATARM–23-Dec-04 Signal Description Table 1. Signal Description Signal Name Function Type Active Level Comments Power VDDIN 1.8V Voltage Regulator Power Supply Power 2.7V to 3.6V VDDIO I/O Lines and Flash Power Supply Power 3V to 3.6V VDDBU Backup I/O Lines Power Supply Power 3V to 3.6V VDDANA Analog Power Supply Power 3V to 3.6V VDDOUT 1.8V Voltage Regulator Output Power 1.85V typical VDDCORE 1.8V Core Power Supply Power 1.65V to 1.95V VDDPLL 1.8V PLL Power Supply Power 1.65V to 1.95V GND Ground Ground GNDANA Analog Ground Ground GNDBU Backup Ground Ground GNDPLL PLL 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 SHDW Shut-Down Control Output Driven at 0V only. Do not tie over VDDBU WKUP0 - WKUP1 Wake-Up Inputs Input Accept between 0V and VDDBU FWKUP Force Wake Up Input Accept between 0V and VDDBU 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 Reset/Test NRST Microcontroller Reset I/O Low TST Test Mode Select Input Pull-down resistor Debug Unit DRXD Debug Receive Data Input DTXD Debug Transmit Data Output |
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