Datasheet

5
6120F–ATARM–03-Oct-06
AT91SAM7X512/256/128 Preliminary
3. Signal Description
Table 3-1. 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