AT32UC3B0512-Z2UR Atmel, AT32UC3B0512-Z2UR Datasheet - Page 529

• Manufacturer Part Number: AT32UC3B0512-Z2UR
• Description: IC MCU AVR32 512K FLASH 64QFN
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3B0512-Z2UR

• Package / Case: 64-QFN
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 60MHz
• Number Of I /o: 44
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 96K x 8
• Program Memory Size: 512KB (512K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, IrDA, SPI, SSC, UART/USART, USB
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

24.6.2
24.6.2.1
Figure 24-3. Functional View of the Channel Block Diagram
24.6.2.2
32059J–12/2010
PWM Channel
Block Diagram
Waveform Properties
Inputs from
Inputs from
Peripheral
generator
clock
Bus
divided clocks.
The clock generator is divided in three blocks:
Each linear divider can independently divide one of the clocks of the modulo n counter. The
selection of the clock to be divided is made according to the PREA (PREB) field of the Mode reg-
ister (MR). The resulting clock clkA (clkB) is the clock selected divided by DIVA (DIVB) field
value in the Mode register (MR).
After a reset of the PWM controller, DIVA (DIVB) and PREA (PREB) in the Mode register are
cleared. This implies that after reset clkA (clkB) are turned off.
At reset, all clocks provided by the modulo n counter are turned off except clock “clk”. This situa-
tion is also true when the PWM master clock is turned off through the Power Manager .
Each of the
• A clock selector which selects one of the clocks provided by the clock generator described in
• An internal counter clocked by the output of the clock selector. This internal counter is
• A comparator used to generate events according to the internal counter value. It also computes
The different properties of output waveforms are:
• the internal clock selection. The internal channel counter is clocked by one of the clocks
Section
incremented or decremented according to the channel configuration and comparators events.
The size of the internal counter is
the PWMx output waveform according to the configuration.
provided by the clock generator described in the previous section. This channel parameter is
defined in the CPRE field of the CMRx register. This field is reset at 0.
Selector
Channel
Clock
– a modulo n counter which provides 11 clocks: F
– two linear dividers (1, 1/2, 1/3, ... 1/255) that provide two separate clocks: clkA and
F
F
clkB
CLK_PWM
CLK_PWM
24.6.1.
7
channels is composed of three blocks:
/8, F
/512, F
CLK_PWM
CLK_PWM
Counter
Internal
/16, F
/1024
CLK_PWM
20
bits.
/32, F
Comparator
CLK_PWM
CLK_PWM
/64, F
CLK_PWM
, F
CLK_PWM
/128, F
PWMx output
waveform
/2, F
AT32UC3B
CLK_PWM
CLK_PWM
/256,
/4,
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