SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 297

• 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

The value obtained must be rounded to the nearest integer prior to being programmed into CORRECTION field.
The value obtained must be rounded to the nearest integer prior to be programmed into CORRECTION field.
If NEGPPM is set to 1, the ppm correction is negative.
• OUT0: RTCOUT0 Output Source Selection
• OUT1: RTCOUT1 Output Source Selection
• THIGH: High Duration of the Output Pulse
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
If HIGHPPM = 1, then the clock frequency correction range is from 30.5 ppm up to 1950 ppm with less than 1 ppm step
in range 30.5 ppm up to 90ppm.
The correction field must be programmed according to the required correction in ppm, the formula is as follows:
Value
Value
Value
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
CORRECTION
Name
Name
NO_WAVE
FREQ1HZ
FREQ32HZ
FREQ64HZ
FREQ512HZ
ALARM_TOGGLE
ALARM_FLAG
PROG_PULSE
Name
NO_WAVE
FREQ1HZ
FREQ32HZ
FREQ64HZ
FREQ512HZ
ALARM_TOGGLE
ALARM_FLAG
PROG_PULSE
H_31MS
H_16MS
H_4MS
=
------------------------ - 1
20
3906
×
Description
31.2 ms
15.6 ms
3.91 ms
Description
no waveform, stuck at ‘0’
1 Hz square wave
32 Hz square wave
64 Hz square wave
512 Hz square wave
output toggles when alarm flag rises
output is a copy of the alarm flag
duty cycle programmable pulse
Description
no waveform, stuck at ‘0’
1 Hz square wave
32 Hz square wave
64 Hz square wave
512 Hz square wave
output toggles when alarm flag rises
output is a copy of the alarm flag
duty cycle programmable pulse
ppm
–
SAM4S
SAM4S
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297