AT90PWM1 Atmel Corporation, AT90PWM1 Datasheet - Page 137
AT90PWM1
Manufacturer Part Number
AT90PWM1
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM1
Flash (kbytes)
8 Kbytes
Pin Count
24
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
19
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.5
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
4
Output Compare Channels
12
Input Capture Channels
1
Pwm Channels
7
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM1-16SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT90PWM161-16MN
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
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Manufacturer:
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Quantity:
20 000
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16.8
16.8.1
16.8.2
4378C–AVR–09/08
PSC Inputs
PSC Retrigger Behaviour versus PSC running modes
Retrigger PSCOUTn0 On External Event
Each part A or B of PSC has its own system to take into account one PSC input. According to
PSC n Input A/B Control Register (see description
has a Retrigger or Fault input.
This system A or B is also configured by this PSC n Input A/B Control Register (PFRCnA/B).
Figure 16-14. PSC Input Module
In centered mode, Retrigger Inputs have no effect.
In two ramp or four ramp mode, Retrigger Inputs A or B cause the end of the corresponding
cycle A or B and the beginning of the following cycle B or A.
In one ramp mode, Retrigger Inputs A or B reset the current PSC counting to zero.
PSCOUTn0 ouput can be resetted before end of On-Time 0 on the change on PSCn Input A.
PSCn Input A can be configured to do not act or to act on level or edge modes. The polarity of
PSCn Input A is configurable thanks to a sense control block. PSCn Input A can be the Output of
the analog comparator or the PSCINn input.
As the period of the cycle decreases, the instantaneous frequency of the two outputs increases.
PSCINn
Analog
Comparator
n Output
PISELnA
(PISELnB)
0
1
PELEVnA /
(PELEVnB)
PRFMnA3:0
(PRFMnB3:0)
PCAEnA
(PCAEnB)
Digital
Filter
CLK
PSC
PAOCnA
(PAOCnB)
PFLTEnA
(PFLTEnB)
0
1
CLK
CLK
2
4
PSC
PSC
Input
Processing
(retriggering ...)
PSC Core
(Counter,
Waveform
Generator, ...)
16.25.13page
Output
Control
161), PSCnIN0/1 input can act
AT90PWM1
PSCOUTn0
(PSCOUTn1)
(PSCOUT22)
(PSCOUT23)
137
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