ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 180
ATxmega32A4
Manufacturer Part Number
ATxmega32A4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega32A4
Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
Twi (i2c)
2
Uart
5
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
1024
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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15.5
8077H–AVR–12/09
Pattern Generation
Figure 15-4. Dead Time Generator timing diagram
The pattern generator extension reuses the DTI registers to produce a synchronized bit pattern
on the port it is connected to. In addition, the waveform generator output from CC channel A
(CCA)) can be distributed to and override all the port pins. These features are primarily intended
for handling the commutation sequence in BLDC and Stepper Motor Applications.
Figure 15-5. Pattern Generator block diagram
A block diagram of the pattern generator is shown in
where the corresponding OOE bit is set the multiplexer will output the waveform from CCA.
As for all other types of the Timer/Counter double-buffered registers the register update is syn-
chronized to the UPDATE condition set by the waveform generation mode. If the
synchronization provided is not required by the application, the application code can simply
access the DTIOE and PORTx registers directly.
The pins direction must be set for any output from the pattern generator to be visible on the port.
"WG output"
"dtls"
"dths"
"dti_cnt"
UPDATE
V
EN
DTIOE[7:0]
DTIBLS
t
DTILS
t
P
Timer/Counter 0 (TCx0)
V
EN
t
T
DTIHS
Figure 15-5 on page
PORTx[7:0]
DTIBHS
Px[7:0]
180. For each port pin
CCA WG output
XMEGA A
Expand
1 to 8
180
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