SAM3U2E Atmel Corporation, SAM3U2E Datasheet - Page 945

• Manufacturer Part Number: SAM3U2E
• Manufacturer: Atmel Corporation

Specifications of SAM3U2E

• Flash (kbytes): 128 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 96 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 57
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device
• Spi: 5
• Twi (i2c): 2
• Uart: 5
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 36
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

38.7.38
Name:
Address:
Access:
This register can only be written if the bits WPSWS3 and WPHWS3 are cleared in
page
Only the first 16 bits (channel counter size) are significant.
• CPRD: Channel Period
If the waveform is left-aligned, then the output waveform period depends on the channel counter source clock and can be
calculated:
If the waveform is center-aligned, then the output waveform period depends on the channel counter source clock and can
be calculated:
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
936.
– By using the PWM master clock (MCK) divided by an X given prescaler value (with X being 1, 2, 4, 8, 16, 32,
– By using the PWM master clock (MCK) divided by one of both DIVA or DIVB divider, the formula becomes,
– By using the PWM master clock (MCK) divided by an X given prescaler value (with X being 1, 2, 4, 8, 16, 32,
– By using the PWM master clock (MCK) divided by one of both DIVA or DIVB divider, the formula becomes,
31
23
15
–
7
(
------------------------------------------ -
(
----------------------------------------------------- -
64, 128, 256, 512, or 1024). The resulting period formula will be:
respectively:
64, 128, 256, 512, or 1024). The resulting period formula will be:
respectively:
(
------------------------------- -
(
------------------------------------------ -
2
2
X
CRPD
×
×
×
PWM Channel Period Register
MCK
X
CPRD
CPRD
MCK
MCK
×
PWM_CPRDx [x=0..3]
0x4008C20C [0], 0x4008C22C [1], 0x4008C24C [2], 0x4008C26C [3]
Read-write
MCK
×
CPRD
DIVA
)
×
DIVA
)
30
22
14
)
–
6
or
)
or
(
------------------------------------------ -
CRPD
(
----------------------------------------------------- -
2
×
MCK
CPRD
×
DIVB
MCK
29
21
13
–
5
×
)
DIVB
)
28
20
12
–
4
CPRD
CPRD
CPRD
27
19
11
–
3
“PWM Write Protect Status Register” on
26
18
10
–
2
SAM3U Series
SAM3U Series
25
17
–
9
1
24
16
–
8
0
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