AT32UC3A0256-ALUT Atmel, AT32UC3A0256-ALUT Datasheet - Page 173

IC MCU AVR32 256KB FLASH 144LQFP

AT32UC3A0256-ALUT

Manufacturer Part Number
AT32UC3A0256-ALUT
Description
IC MCU AVR32 256KB FLASH 144LQFP
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheets

Specifications of AT32UC3A0256-ALUT

Core Processor
AVR
Core Size
32-Bit
Speed
66MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
109
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Processor Series
AT32UC3x
Core
AVR32
Data Bus Width
32 bit
Data Ram Size
64 KB
Interface Type
2-Wire, RS-485, SPI, USART
Maximum Clock Frequency
66 MHz
Number Of Programmable I/os
69
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR32, EWAVR32-BL, KSK-EVK1100-PL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATEXTWIFI, ATEVK1100, ATEVK1105
Minimum Operating Temperature
- 40 C
Controller Family/series
AT32UC3A
No. Of I/o's
109
Ram Memory Size
64KB
Cpu Speed
66MHz
No. Of Timers
1
Rohs Compliant
Yes
Package
144LQFP
Device Core
AVR32
Family Name
AT32
Maximum Speed
66 MHz
Operating Supply Voltage
1.8|3.3 V
For Use With
ATEVK1105 - KIT EVAL FOR AT32UC3A0ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMR770-1008 - ISP 4PORT ATMEL AVR32 MCU SPIATEVK1100 - KIT DEV/EVAL FOR AVR32 AT32UC3A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT32UC3A0256-ALUT
Manufacturer:
ATMEL
Quantity:
167
Part Number:
AT32UC3A0256-ALUT
Manufacturer:
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Quantity:
10 000
22.4.7
22.4.8
22.4.9
32058J–AVR32–04/11
Interrupts
Input Glitch Filter
Interrupt Timings
Figure 22-2. Output line timings
The GPIO can be programmed to generate an interrupt when it detects an input change on an
I/O line. The module can be configured to signal an interrupt whenever a pin changes value or
only to trigger on rising edges or falling edges. Interrupt is enabled on a pin by setting the corre-
sponding bit in IER (Interrupt Enable Register). The interrupt mode is set by accessing IMR0
(Interrupt Mode Register 0) and IMR1 (Interrupt Mode Register 1). Interrupt can be enabled on a
pin, regardless of the configuration the I/O line, i.e. controlled by the GPIO or assigned to a
peripheral function.
In every port there are four interrupt lines connected to the interrupt controller. Every eigth inter-
rupts in the port are ored together to form an interrupt line.
When an interrupt event is detected on an I/O line, and the corresponding bit in IER is set, the
GPIO interrupt request line is asserted. A number of interrupt signals are ORed-wired together
to generate a single interrupt signal to the interrupt controller.
IFR (Interrupt Flag Register) can by read by software to determine which pin(s) caused the inter-
rupt. The interrupt flag must be manually cleared by writing to IFR.
GPIO interrupts can only be triggered when the GPIO clock is enabled.
Optional input glitch filters can be enabled on each I/O line. When the glitch filter is enabled, a
glitch with duration of less than 1 clock cycle is automatically rejected, while a pulse with dura-
tion of 2 clock cycles or more is accepted. For pulse durations between 1 clock cycle and 2 clock
cycles, the pulse may or may not be taken into account, depending on the precise timing of its
occurrence. Thus for a pulse to be guaranteed visible it must exceed 2 clock cycles, whereas for
a glitch to be reliably filtered out, its duration must not exceed 1 clock cycle. The filter introduces
2 clock cycles latency.
The glitch filters are controlled by the register GFER (Glitch Filter Enable Register). When a bit is
set in GFER, the glitch filter on the corresponding pin is enabled. The glitch filter affects only
interrupt inputs. Inputs to peripherals or the value read through PVR are not affected by the
glitch filters.
The figure below shows the timing for rising edge (or pin-change) interrupts when the glitch filter
is disabled. For the pulse to be registered, it must be sampled at the rising edge of the clock. In
this example, this is not the case for the first pulse. The second pulse is however sampled on a
rising edge and will trigger an interrupt request.
Write GPIO_OVR to 1
Write GPIO_OVR to 0
GPIO_OVR / I/O Line
GPIO_PVR
clock
PBA Access
PBA Access
AT32UC3A
173

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