SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 296
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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15.6.2
Name:
Address:
Access:
• HRMOD: 12-/24-hour Mode
0 = 24-hour mode is selected.
1 = 12-hour mode is selected.
• PERSIAN: PERSIAN Calendar
0 = Gregorian Calendar.
1 = Persian Calendar.
• NEGPPM: NEGative PPM Correction
0 = positive correction (the divider will be slightly lower than 32768).
1 = negative correction (the divider will be slightly higher than 32768).
Refer to CORRECTION and HIGHPPM field descriptions.
• CORRECTION:
0 = No correction
1..127 = The slow clock will be corrected according to the formula given below in HIGHPPM description.
• HIGHPPM: HIGH PPM Correction
0 = lower range ppm correction with accurate correction.
1 = higher range ppm correction with accurate correction.
If the absolute value of the correction to be applied is lower than 30ppm, it is recommended to clear HIGHPPM. HIGHPPM
set to 1 is recommended for 30 ppm correction and above.
Formula:
296
296
HIGHPPM
If HIGHPPM = 0, then the clock frequency correction range is from 1.5 ppm up to 98 ppm with less than 1 ppm step in
range from 1.5 ppm up to 30 ppm.
The correction field must be programmed according to the required correction in ppm, the formula is as follows:
31
23
15
–
–
7
–
SAM4S
SAM4S
RTC Mode Register
CORRECTION
30
22
14
RTC_MR
0x400E1464
Read-write
–
6
–
=
3906
------------ - 1
ppm
OUT1
29
21
13
5
–
–
TPERIOD
NEGPPM
28
20
12
4
CORRECTION
27
19
11
–
–
–
3
26
18
10
2
–
PERSIAN
THIGH
OUT0
25
17
9
1
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
HRMOD
24
16
8
0
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