AT90PWM316 Atmel Corporation, AT90PWM316 Datasheet - Page 145
AT90PWM316
Manufacturer Part Number
AT90PWM316
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM316
Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 105
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
1
Pwm Channels
12
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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16.7.2
16.7.2.1
16.7.2.2
7710F–AVR–09/11
PSCOUTn0
PSCOUTn1
Period
Modes of Operation
DT0
Normal Mode
Enhanced Mode
OT0
The simplest mode of operation is the normal mode. See
The active time of PSCOUTn0 is given by the OT0 value. The active time of PSCOUTn1 is given
by the OT1 value. Both of them are 12 bit values. Thanks to DT0 & DT1 to ajust the dead time
between PSCOUTn0 and PSCOUTn1 active signals.
The waveform frequency is defined by the following equation:
The Enhanced Mode uses the previously described method to generate a high resolution
frequency.
Figure 16-13. Enhanced Mode, Timing Diagram
The supplementary step in counting to generate f
in the frame according to the fractional divider.
lated frame,” on page
The waveform frequency is defined by the following equations:
d is the fractionel divider factor.
T1
DT1
f
PSCn
=
144.
f2
OT1
----------------------------- -
PSCnCycle
f1
PSCn
PSCn
f
AVERAGE
1
=
=
----- -
T
1
DT0
2
----- -
T
1
1
=
=
=
=
------------------------------------------------------------------------------- -
(
----------------------------------------------------------------------
(
----- -
16
OT0
d
OT0
----------------------------------------------------------------------
(
OT0
×
f1
+
+
PSCn
+
OT1
OT1
f
SeeTable 16-5, “Distribution of fb2 in the modu-
OT0
CLK_PSCn
OT1
f
f
b2
CLK_PSCn
CLK_PSCn
+
+
is added on the PSCn0 signal while needed
+
16 d
-------------- -
+
DT0
16
DT0
–
DT0
T2
Figure
×
+
+
f2
+
DT1
DT1
DT1
AT90PWM216/316
PSCn
DT1
16-6.
)
+
)
1
=
)
OT1+1
=
1
DT0
145
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