ATxmega64A1 Atmel Corporation, ATxmega64A1 Datasheet - Page 25
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ATxmega64A1
Manufacturer Part Number
ATxmega64A1
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A1
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
78
Ext Interrupts
78
Usb Speed
No
Usb Interface
No
Spi
12
Twi (i2c)
4
Uart
8
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
4
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
8
Output Compare Channels
24
Input Capture Channels
24
Pwm Channels
24
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A1-AU
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
ATxmega64A1U-AU
Manufacturer:
ATMEL
Quantity:
953
13. PMIC - Programmable Multi-level Interrupt Controller
13.1
13.2
13.3
Table 13-1.
8067M–AVR–09/10
Program Address
(Base Address)
Features
Overview
Interrupt vectors
0x00C
0x01C
0x03E
0x000
0x002
0x004
0x008
0x014
0x018
0x028
0x030
0x032
0x038
Reset and Interrupt Vectors
Source
RESET
OSCF_INT_vect
PORTC_INT_base
PORTR_INT_base
DMA_INT_base
RTC_INT_base
TWIC_INT_base
TCC0_INT_base
TCC1_INT_base
SPIC_INT_vect
USARTC0_INT_base
USARTC1_INT_base
AES_INT_vect
•
•
•
•
XMEGA A1 has a Programmable Multi-level Interrupt Controller (PMIC). All peripherals can
define three different priority levels for interrupts; high, medium or low. Medium level interrupts
may interrupt low level interrupt service routines. High level interrupts may interrupt both low-
and medium level interrupt service routines. Low level interrupts have an optional round robin
scheme to make sure all interrupts are serviced within a certain amount of time.
The built in oscillator failure detection mechanism can issue a Non-Maskable Interrupt (NMI).
When an interrupt is serviced, the program counter will jump to the interrupt vector address. The
interrupt vector is the sum of the peripheral’s base interrupt address and the offset address for
specific interrupts in each peripheral. The base addresses for the XMEGA A1 devices are shown
in
each peripheral in the XMEGA A manual. For peripherals or modules that have only one inter-
rupt, the interrupt vector is shown in
Separate interrupt vector for each interrupt
Short, predictable interrupt response time
Programmable Multi-level Interrupt Controller
Interrupt vectors can be moved to the start of the Boot Section
Table
– 3 programmable interrupt levels
– Selectable priority scheme within low level interrupts (round-robin or fixed)
– Non-Maskable Interrupts (NMI)
13-1. Offset addresses for each interrupt available in the peripheral are described for
Interrupt Description
Crystal Oscillator Failure Interrupt vector (NMI)
Port C Interrupt base
Port R Interrupt base
DMA Controller Interrupt base
Real Time Counter Interrupt base
Two-Wire Interface on Port C Interrupt base
Timer/Counter 0 on port C Interrupt base
Timer/Counter 1 on port C Interrupt base
SPI on port C Interrupt vector
USART 0 on port C Interrupt base
USART 1 on port C Interrupt base
AES Interrupt vector
Table
13-1. The program address is the word address.
XMEGA A1
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