Datasheet

5
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
Shutdown, Wakeup Logic
SHDN Shutdown Control Output VDDBU
Driven at 0V only.
0: The device is in backup
mode
1: The device is running
(not in backup mode).
WKUP Wake-Up Input Input VDDBU
Accepts between 0V and
VDDBU
ICE and JTAG
TCK Test Clock Input VDDIOP0
No pull-up resistor,
Schmitt trigger
TDI Test Data In Input VDDIOP0
No pull-up resistor,
Schmitt trigger
TDO Test Data Out Output VDDIOP0
TMS Test Mode Select Input VDDIOP0
No pull-up resistor,
Schmitt trigger
JTAGSEL JTAG Selection Input VDDBU Pull-down resistor (15 k
Ω)
RTCK Return Test Clock Output VDDIOP0
Reset/Test
NRST Microprocessor Reset
(2)
I/O Low VDDIOP0
Open drain output.
Pull-up resistor (100 kΩ),
Schmitt trigger
TST Test Mode Select Input VDDBU
Pull-down resistor
(15 k
Ω), Schmitt trigger
NTRST Test Reset Signal Input VDDIOP0
Pull-up resistor (100 k
Ω),
Schmitt trigger
BMS Boot Mode Select Input VDDIOP0
Must be connected to
GND or VDDIOP0
Debug Unit - DBGU
DRXD Debug Receive Data Input
(1)
DTXD Debug Transmit Data Output
(1)
Advanced Interrupt Controller - AIC
IRQ External Interrupt Input Input
(1)
FIQ Fast Interrupt Input Input
(1)
PIO Controller - PIOA / PIOB / PIOC / PIOD / PIOE
PA0–PA31 Parallel IO Controller A I/O
(1)
Pulled-up input at reset
(100 kΩ)
(3)
, Schmitt
trigger
PB0–PB31 Parallel IO Controller B I/O
(1)
PC0–PC31 Parallel IO Controller C I/O
(1)
PD0–PD31 Parallel IO Controller D I/O
(1)
PE0–PE31 Parallel IO Controller E I/O
(1)
Table 2-1. Signal Description List (Continued)
Signal Name Function Type
Active
Level
Reference
Voltage Comments