Datasheet

6
SAM7S Series [DATASHEET]
6175KS–ATARM–25-Oct-12
3. Signal Description
Table 3-1. Signal Description List
Signal Name Function Type
Active
Level Comments
Power
VDDIN
Voltage and ADC Regulator Power Supply
Input
Power 3.0 to 3.6V
VDDOUT Voltage Regulator Output Power 1.85V nominal
VDDFLASH Flash Power Supply Power 3.0V to 3.6V
VDDIO I/O Lines Power Supply Power 3.0V to 3.6V or 1.65V to 1.95V
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 - PCK2 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
(1)
Flash Memory
ERASE
Flash and NVM Configuration Bits Erase
Command
Input High Pull-down resistor
(1)
Reset/Test
NRST Microcontroller Reset I/O Low Open-drain with pull-Up resistor
TST Test Mode Select Input High Pull-down resistor
(1)
Debug Unit
DRXD Debug Receive Data Input
DTXD Debug Transmit Data Output
AIC
IRQ0 - IRQ1 External Interrupt Inputs Input IRQ1 not present on SAM7S32/16
FIQ Fast Interrupt Input Input
PIO
PA0 - PA31 Parallel IO Controller A I/O
Pulled-up input at reset
PA0 - PA20 only on SAM7S32/16