SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 476
SAM4S16C
Manufacturer Part Number
SAM4S16C
Description
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
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26.1.3
26.1.4
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476
SAM4S
SAM4S
Block Diagram
Slow Clock
Figure 26-1. Clock Generator Block Diagram
The Supply Controller embeds a slow clock generator that is supplied with the VDDIO power
supply. As soon as the VDDIO is supplied, both the crystal oscillator and the embedded RC
oscillator are powered up, but only the embedded RC oscillator is enabled. This allows the slow
clock to be valid in a short time (about 100 µs).
The Slow Clock is generated either by the Slow Clock Crystal Oscillator or by the Slow Clock RC
Oscillator.
The selection between the RC or the crystal oscillator is made by writing the XTALSEL bit in the
Supply Controller Control Register (SUPC_CR).
XOUT32
XOUT
XIN32
XIN
(Supply C ontroller)
XTALSEL
Clock G ene rator
RC Oscillator
RC Oscillator
Management
Embedded
4/8/12 MHz
Embedded
Resonator
Status
32768 Hz
Oscill a tor
3-20 MHz
Oscilla tor
Ceramic
Controller
32 kHz
Crystal
Crystal
Power
Fast
or
Control
0
1
0
1
MOSCSEL
PLLB and
PLLA and
Divider /2
PLLBDIV2
PLLADIV2
Divider /2
Sl ow Clock
SLCK
Main Clo ck
MAINCK
PLLA Cloc
PLLACK
PLLB Cloc
PLLBCK
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
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