AT32UC3B1128 Atmel Corporation, AT32UC3B1128 Datasheet - Page 518

• Manufacturer Part Number: AT32UC3B1128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3B1128

• Flash (kbytes): 128 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 60 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32059L–AVR32–01/2012
• the waveform period. This channel parameter is defined in the CPRD field of the CPRDx
• the waveform duty cycle. This channel parameter is defined in the CDTY field of the CDTYx
• the waveform polarity. At the beginning of the period, the signal can be at high or low level.
• the waveform alignment. The output waveform can be left or center aligned. Center aligned
register.
- If the waveform is left aligned, then the output waveform period depends on the counter
source clock and can be calculated:
By using the Master Clock (CLK_PWM) divided by an X given prescaler value
(with X being 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024), the resulting period formula
will be:
By using a Master Clock divided by one of both DIVA or DIVB divider, the formula becomes,
respectively:
If the waveform is center aligned then the output waveform period depends on the counter
source clock and can be calculated:
By using the Master Clock (CLK_PWM) divided by an X given prescaler value
(with X being 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024). The resulting period formula will
be:
By using a Master Clock divided by one of both DIVA or DIVB divider, the formula becomes,
respectively:
register.
If the waveform is left aligned then:
If the waveform is center aligned, then:
This property is defined in the CPOL field of the CMRx register. By default the signal starts by
a low level.
waveforms can be used to generate non overlapped waveforms. This property is defined in
the CALG field of the CMRx register. The default mode is left aligned.
(
------------------------------ -
(
----------------------------------------- -
(
---------------------------------------- -
(
--------------------------------------------------- -
CLK_PWM
X CPRD
CRPD
2 X CPRD
2 CPRD DIVA
CLK_PWM
duty cycle
CLK_PWM
×
×
×
duty cycle
CLK_PWM
×
×
DIVA
)
×
=
)
)
=
or
(
------------------------------------------------------------------------------------------------------- -
period 1 fchannel_x_clock
(
---------------------------------------------------------------------------------------------------------------------- -
)
(
period 2 ⁄
(
--------------------------------------------- -
or
CRPD
CLK_PWM
(
--------------------------------------------------- -
2 CPRD
–
×
×
CLK_PWM
DIVAB
⁄
) 1 fchannel_x_clock
–
×
period
⁄
(
)
DIVB
period 2 ⁄
)
)
×
CDTY
×
CDTY
)
) )
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