AT90PWM81 Atmel Corporation, AT90PWM81 Datasheet - Page 139
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AT90PWM81
Manufacturer Part Number
AT90PWM81
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT90PWM161.pdf
(325 pages)
Specifications of AT90PWM81
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
20
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
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
Yes
Crypto Engine
No
Sram (kbytes)
0.25
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
1
Output Compare Channels
8
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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12.25.8
12.25.9
7734P–AVR–08/10
Analog Synchronization Delay Register – PASDLYn
PSC 2 Control Register – PCTL2
• Bit 0– PISELnB1: PSC n Input Select for part B
Together with PISELnB0, defines active signal on PSC part B.
Table 12-19.
The Analog Synchronization Delay Register store an 8 bit delay used:
See also the bit definition Section “Bit 7, 6, 5– PASDLKn(2:0): Analog Synchronization Output Delay or
Input Blanking select”, page 136 and Section “Bit 5:4 – PSYNCn1:0: Synchronization Out for ADC
Selection”, page 133
• Bit 7:6 – PPREn1:0 : PSC n Prescaler Select
This two bits select the PSC input clock division factor.All generated waveform will be modified by this
factor.
Table 12-20.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
PISELnB1
0
0
1
1
PPREn1
0
• For the input signal blanking. See Section “PSC Inputs”, page 113
• For shifting the PSCOUTnx edges and the PSCnASY signal. See Section “Analog Synchronization”,
page 130
7
PPRE21
R/W
0
7
PASDLYn[7:0]
W
0
PSC trigger & fault input Selection
PSC n Prescaler Selection
PPREn0
0
PISELnB0
0
1
0
1
6
W
0
6
PPRE20
R/W
0
Description
No divider on PSC input clock
5
W
0
5
PBFM20
R/W
0
Description
PSCINn
First analog comparator output
PSCINnA
Second analog comparator output
0
4
PAOC2B
R/W
0
4
W
3
PAOC2A
R/W
0
3
W
0
2
PARUN2
R/W
0
2
W
0
1
PCCYC2
R/W
0
1
W
0
AT90PWM81
PRUN2
0
R/W
0
0
W
0
PCTL2
PASDLYn
139
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