AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 148

• Manufacturer Part Number: AT90PWM81-16SN
• Description: IC MCU AVR 8K FLASH ISP 20SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM81-16SN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (7.5mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Timers: 1
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 1 Channel
• Height: 2.35 mm
• Length: 13 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 7.6 mm
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.3
148
PSCR Description
AT90PWM81
Figure 13-1.
The principle of the PSCR is based on the use of a counter (PSCR counter). This counter is able to count
up and count down from and to values stored in registers according to the selected running mode.
The PSCR is seen as two symmetrical entities. One part named part A which generates the output
PSCOUTr0 and the second one named part B which generates the PSCOUTr1 output.
Each part A or B has its own PSCR Input Module to manage selected input.
PCTLr
OCRrRB
OCRrSB
OCRrRA
PICRr
PSCR Counter
PCNFr
OCRrSA
Power Stage Controller Block Diagram
=
=
=
=
PFRCrA
PFRCrB
Part B
Part A
Gererator B
PSC Input
Module B
PSC Input
Module A
Gererator A
Waveform
Waveform
PSOCr
PSCOUTr1
PSCr Input B
PSCr Input A
PSCOUTr0
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