ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 620
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ATUC128L4U
Manufacturer Part Number
ATUC128L4U
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.ATUC128L4U.pdf
(960 pages)
4.ATUC128L4U.pdf
(92 pages)
Specifications of ATUC128L4U
Flash (kbytes)
128 Kbytes
Pin Count
48
Max. Operating Frequency
50 MHz
Cpu
32-bit AVR
# Of Touch Channels
17
Hardware Qtouch Acquisition
Yes
Max I/o Pins
36
Ext Interrupts
36
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
2
Uart
4
Lin
4
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
460
Analog Comparators
8
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
16
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.62 to 3.6
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
18
Input Capture Channels
12
Pwm Channels
35
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATUC128L4U-U
Manufacturer:
ATMEL
Quantity:
3 006
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- ATUC128L4U PDF datasheet #3
- ATUC128L4U PDF datasheet #4
- Current page: 620 of 960
- Download datasheet (15Mb)
25.6.6.2
32142A–12/2011
Interlinked Multiple Value PWM Operation
(ISDUTY) register. Each channel has a corresponding enabling bit in the Interlinked Single
Value Channel Set (ISCHSET) register(s). When a bit is written to one in the ISCHSET register,
the duty cycle register for the corresponding channel will be updated with the value stored in the
ISDUTY register. It can only be updated when the READY bit in the Status Register
(SR.READY) is one, indicating that the PWMA is ready for writing.
shows the writing procedure. It is thus possible to update the duty cycle values for up to 32 PWM
channels within one ISCHSET register at a time.
Figure 25-3. Interlinked Single Value PWM Operation Flow
The interlinked multiple value PWM operation allows up to four channels to be updated simulta-
neously with different duty cycle values. The four duty cycle values are required to be written to
the four registers, DUTY3, DUTY2, DUTY1 and DUTY0 , respectively. The index number of the
four channels to be updated is written to the four SEL fields in the Interlinked Multiple Value
Channel Select (IMCHSEL) register (IMCHSEL.SEL). When the IMCHSEL register is written,
the values stored in the DUTY0/1/2/3 registers are synchronized to the duty cycle registers for
the channels selected by the SEL fields.
Note that only writes to the implemented channels will be effective. If one of the IMCHSEL.SEL
fields points to a non-existing channel, the corresponding value in the DUTYx register will not be
written. If the same channel is specified multiple times in the IMCHSEL.SEL fields, the channel
will be updated with the value referred by the upper IMCHSEL.SEL field.
When only the least significant 8-bits duty cycle value are considered for updating, the four duty
cycle values can be written to the IMDUTY register once. This is equivalent to writing the four
duty cycle values to the four DUTY registers one by one.
Figure 25-4. Interlinked Multiple Value PWM Operation Flow
Channeln
DUTY
Channeln
DUTY
...
DUTY3/2/1/0
ISDUTY
IMDUTY
Channel2
DUTY
...
Figure 25-4 on page 620
Channel1
DUTY
Channel1
ISCHSETm
IMCHSEL
MUX
DUTY
ATUC64/128/256L3/4U
Channel0
DUTY
Channel0
DUTY
Enable
shows the writing procedure.
Write
Figure 25-3 on page 620
620
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