ATxmega128A3U Atmel Corporation, ATxmega128A3U Datasheet - Page 165
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ATxmega128A3U
Manufacturer Part Number
ATxmega128A3U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega128A3U
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 Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
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:
ATxmega128A3U-AU
Manufacturer:
ATMEL
Quantity:
39
Company:
Part Number:
ATxmega128A3U-MH
Manufacturer:
ATMEL
Quantity:
1
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14.2.1
8331A–AVR–07/11
Definitions
There are two differences between timer/counter type 0 and type 1. Timer/counter 0 has four CC
channels, and timer/counter 1 has two CC channels. All information related to CC channels 3
and 4 is valid only for timer/counter 0. Only Timer/Counter 0 has the split mode feature that split
it into 2 8-bit Timer/Counters with four compare channels each.
Some timer/counters have extensions to enable more specialized waveform and frequency gen-
eration. The advanced waveform extension (AWeX) is intended for motor control and other
power control applications. It enables low- and high-side output with dead-time insertion, aswell
as fault protection for disabling and shutting down external drivers. It can also generate a syn-
chronized bit pattern across the port pins. The high-resolution (hi-res) extension can be used to
increase the waveform output resolution by four or eight times by using an internal clock source
running up to four times faster than the peripheral clock.
A block diagram of the 16-bit timer/counter with extensions and closely related peripheral mod-
ules (in grey) is shown in
Figure 14-1. 16-bit timer/counter and closely related peripherals.
The following definitions are used throughout the documentation:
Table 14-1.
In general, the term “timer” is used when the timer/counter clock control is handled by an internal
source, and the term “counter” is used when the clock control is handled externally (e.g. count-
ing external events). When used for compare operations, the CC channels are referred to as
Name
BOTTOM
MAX
TOP
UPDATE
Timer/Counter
Base Counter
Compare/Capture Channel A
Timer Period
Comparator
Compare/Capture Channel B
Counter
Buffer
Compare/Capture Channel C
Compare/Capture Channel D
Timer/counter definitions.
Description
The counter reaches BOTTOM when it becomes zero.
The counter reaches MAXimum when it becomes all ones.
The counter reaches TOP when it becomes equal to the highest value in the count
sequence. The TOP value can be equal to the period (PER) or the compare channel
A (CCA) register setting. This is selected by the waveform generator mode.
The timer/counter signals an update when it reaches BOTTOM or TOP, depending on
the waveform generator mode.
Control Logic
Generation
Waveform
Capture
Control
Figure 14-1 on page
Prescaler
System
AWeX
Event
165.
Dead-Time
Insertion
Atmel AVR XMEGA AU
clk
PER
Generation
Protection
Pattern
Fault
clk
PER4
165
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