ATxmega128A3 Atmel Corporation, ATxmega128A3 Datasheet - Page 95
ATxmega128A3
Manufacturer Part Number
ATxmega128A3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega128A3
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
50
Ext Interrupts
50
Usb Speed
No
Usb Interface
No
Spi
10
Twi (i2c)
2
Uart
7
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
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
8
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
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
7
Output Compare Channels
22
Input Capture Channels
22
Pwm Channels
22
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega128A3-MH
Manufacturer:
ZARLINK
Quantity:
101
Company:
Part Number:
ATxmega128A3U-AU
Manufacturer:
ATMEL
Quantity:
39
Company:
Part Number:
ATxmega128A3U-MH
Manufacturer:
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Quantity:
1
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8. Power Management and Sleep
8.1
8.2
8.3
8077H–AVR–12/09
Features
Overview
Sleep Modes
•
•
XMEGA provides various sleep modes and software controlled clock gating in order to tailor
power consumption to the application's requirement. Sleep modes enables the microcontroller to
shut down unused modules to save power. When the device enters sleep mode, program exe-
cution is stopped and interrupts or reset is used to wake the device again. The individual clock to
unused peripherals can be stopped during normal operation or in sleep, enabling a much more
fine tuned power management than sleep modes alone.
Sleep modes are used to shut down modules and clock domains in the microcontroller in order
to save power. XMEGA has five different sleep modes. A dedicated Sleep instruction (SLEEP) is
available to enter sleep. Before executing SLEEP, the selected sleep mode to enter must be
configured. The available interrupt wake-up sources is dependent on the selected sleep mode.
When an enabled interrupt occurs the device will wake up and execute the interrupt service rou-
tine before continuing normal program execution from the first instruction after the SLEEP
instruction. If other higher priority interrupts are pending when the wake-up occurs, their interrupt
service routines will be executed according to their priority before the interrupt service routine for
the wake-up interrupt is executed. After wake-up the CPU is halted for four cycles before execu-
tion starts.
5 sleep modes
Power Reduction register to disable clock to unused peripherals
– Idle
– Power-down
– Power-save
– Standby
– Extended standby
XMEGA A
95
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