Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 5
SAM9G20
2. Signal Description
Table 2-1: Signal Description List
Signal Name Function Type Active Level Comments
Power Supplies
VDDIOM EBI I/O Lines Power Supply Power – 1.65–1.95 V or 3.0–3.6 V
VDDIOP Peripherals I/O Lines Power Supply Power – 1.65–3.6 V
VDDBU Backup I/O Lines Power Supply Power – 0.9–1.1 V
VDDANA Analog Power Supply Power – 3.0–3.6 V
VDDPLL PLL Power Supply Power – 0.9–1.1 V
VDDOSC Oscillator Power Supply Power – 1.65–3.6 V
VDDCORE Core Chip Power Supply Power – 0.9–1.1 V
VDDUSB USB Power Supply Power – 1.65–3.6 V
GND Ground Ground –
GNDANA Analog Ground Ground –
GNDBU Backup Ground Ground –
GNDUSB USB Ground Ground –
GNDPLL PLL Ground Ground –
Clocks, Oscillators and PLLs
XIN Main Oscillator Input Input –
XOUT Main Oscillator Output Output –
XIN32 Slow Clock Oscillator Input Input –
XOUT32 Slow Clock Oscillator Output Output –
OSCSEL Slow Clock Oscillator Selection Input – Accepts between 0V and VDDBU
PCK0–PCK1 Programmable Clock Output Output –
Shutdown, Wakeup Logic
SHDN Shutdown Control Output –
WKUP Wake-up Input Input – Accepts between 0V and VDDBU
ICE and JTAG
NTRST Test Reset Signal Input Low Pull-up resistor
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. Accepts
between 0V and VDDBU.
RTCK Return Test Clock Output –