AT90PWM3B-16SUR Atmel, AT90PWM3B-16SUR Datasheet - Page 138

• Manufacturer Part Number: AT90PWM3B-16SUR
• Description: MCU AVR 8K FLASH 16MHA 32SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM3B-16SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 27
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

138
AT90PWM2/3/2B/3B
Figure 16-9. PSCn0 & PSCn1 Basic Waveforms in Center Aligned Mode
On-Time 0 = 2 * OCRnSAH/L * 1/Fclkpsc
On-Time 1 = 2 * (OCRnRBH/L - OCRnSBH/L + 1) * 1/Fclkpsc
Dead-Time = (OCRnSBH/L - OCRnSAH/L) * 1/Fclkpsc
PSC Cycle = 2 * (OCRnRBH/L + 1) * 1/Fclkpsc
Note:
OCRnRAH/L is not used to control PSC Output waveform timing. Nevertheless, it can be useful
to adjust ADC synchronization (
Figure 16-10. Run and Stop Mechanism in Centered Mode
Note:
OCRnRB
OCRnSB
OCRnSA
PSC Counter
Run
PSCOUTn0
(AT90PWM2/3)
PSCOUTn1
PSCOUTn1
(AT90PWM2B/3B)
Minimal value for PSC Cycle = 2 * 1/Fclkpsc
See “PSC 0 Control Register – PCTL0” on page
PSCOUTn0
PSCOUTn1
(AT90PWM2/3)
PSCOUTn1
(AT90PWM2B/3B)
OCRnRB
OCRnSB
OCRnSA
On-Time 1
PSC Counter
Dead-Time
See “Analog Synchronization” on page 157.
On-Time 0
PSC Cycle
0
0
164.(or PCTL1 or PCTL2)
Dead-Time
On-Time 1
).
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