AT90PWM81 Atmel Corporation, AT90PWM81 Datasheet - Page 139

• Manufacturer Part Number: AT90PWM81
• Manufacturer: Atmel Corporation

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

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