SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 900

• Manufacturer Part Number: SAM4S16C
• Manufacturer: Atmel Corporation

Specifications of SAM4S16C

• Flash (kbytes): 1024 Kbytes
• Pin Count: 100
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 79
• Ext Interrupts: 79
• Usb Transceiver: 1
• Quadrature Decoder Channels: 2
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1000
• Analog Comparators: 1
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 128
• 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: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

36.6
36.6.1
900
900
Functional Description
SAM4S
SAM4S
PWM Clock Generator
The
Figure 36-2. Functional View of the Clock Generator Block Diagram
The PWM master clock (MCK) is divided in the clock generator module to provide different
clocks available for all channels. Each channel can independently select one of the divided
clocks.
The clock generator is divided in three blocks:
• Clocked by the master clock (MCK), the clock generator module provides 13 clocks.
• Each channel can independently choose one of the clock generator outputs.
• Each channel generates an output waveform with attributes that can be defined
independently for each channel through the user interface registers.
PWM
– 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
clkB
MCK
macrocell is primarily composed of a clock generator module and 4 channels.
/16, F
MCK
/32, F
MCK
MCK
/64, F
modulo n counter
MCK
/128, F
MCK
PREA
PREB
/256, F
PWM_MR
PWM_MR
Divider A
Divider B
MCK
DIVA
DIVB
MCK
, F
MCK
MCK/2
MCK/4
MCK/8
MCK/16
MCK/32
MCK/64
MCK/128
MCK/256
MCK/512
MCK/1024
MCK
/512, F
/2, F
clkA
clkB
MCK
MCK
/1024
/4, F
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
MCK
/8,