ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 513

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 30-8. Input Change Interrupt Timings if there are no Additional Interrupt Modes
30.5.11
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
Read PIO_ISR
Pin Level
PIO_ISR
MCK
I/O Lines Lock
The other lines are configured in Falling Edge or Low Level detection by default, if they have not
been previously configured. Otherwise, lines 1, 3 and 6 must be configured in Falling Edge/Low
Level detection by writing 32’h0000_004A in PIO_FELLSR.
When an I/O line is controlled by a peripheral (particularly the Pulse Width Modulation Controller
PWM), it can become locked by the action of this peripheral via an input of the PIO controller.
When an I/O line is locked, the write of the corresponding bit in the registers PIO_PER,
PIO_PDR, PIO_MDER, PIO_MDDR, PIO_PUDR, PIO_PUER and PIO_ABSR is discarded in
order to lock its configuration. The user can know at anytime which I/O line is locked by reading
the PIO Lock Status register PIO_LOCKSR. Once an I/O line is locked, the only way to unlock it
is to apply an hardware reset to the PIO Controller.
APB Access
SAM3U Series
SAM3U Series
APB Access
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