AT90PWM3B-16SU Atmel, AT90PWM3B-16SU Datasheet - Page 135

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

Specifications of AT90PWM3B-16SU

• 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)
• Processor Series: AT90PWMx
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI/USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 27
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRFBKIT, ATAVRISP2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 11-ch x 10-bit
• On-chip Dac: 1-chx10-bit
• Controller Family/series: AVR PWM
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 16MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK520 - ADAPTER KIT FOR 90PWM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.5.2
16.5.2.1
16.5.2.2
4317J–AVR–08/10
Running Mode Description
Four Ramp Mode
Two Ramp Mode
Waveforms and length of output signals are determined by Time Parameters (DT0, OT0, DT1,
OT1) and by the running mode. Four modes are possible :
In Four Ramp mode, each time in a cycle has its own definition
Figure 16-6. PSCn0 & PSCn1 Basic Waveforms in Four Ramp mode
The input clock of PSC is given by CLKPSC.
PSCOUTn0 and PSCOUTn1 signals are defined by On-Time 0, Dead-Time 0, On-Time 1 and
Dead-Time 1 values with :
On-Time 0 = OCRnRAH/L * 1/Fclkpsc
On-Time 1 = OCRnRBH/L * 1/Fclkpsc
Dead-Time 0 = (OCRnSAH/L + 2) * 1/Fclkpsc
Dead-Time 1 = (OCRnSBH/L + 2) * 1/Fclkpsc
Note:
In Two Ramp mode, the whole cycle is divided in two moments
One moment for PSCn0 description with OT0 which gives the time of the whole moment
One moment for PSCn1 description with OT1 which gives the time of the whole moment
PSC Counter
PSCOUTn0
PSCOUTn1
–
–
–
–
Four Ramp mode
Two Ramp mode
One Ramp mode
Center Aligned mode
Minimal value for Dead-Time 0 and Dead-Time 1 = 2 * 1/Fclkpsc
OCRnSA
0
Dead-Time 0
On-Time 0
PSC Cycle
OCRnRA
0
OCRnSB
Dead-Time 1
AT90PWM2/3/2B/3B
On-Time 1
OCRnRB
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