AT90PWM1-16SU Atmel, AT90PWM1-16SU Datasheet - Page 129

• Manufacturer Part Number: AT90PWM1-16SU
• Description: MCU AVR 8K FLASH 16MHZ 24-SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM1-16SU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 19
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 24-SOIC (7.5mm Width)
• Processor Series: AT90PWMx
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 19
• Number Of Timers: 2
• 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: 10 bit, 11 Channel
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.5.2
16.5.2.1
4378C–AVR–09/08
Running Mode Description
Four Ramp Mode
Figure 16-5. Cycle Presentation in Centered Mode
Ramps illustrate the output of the PSC counter included in the waveform generators. Centered
Mode is like a one ramp mode which count down up and down.
Notice that the update of a new set of values is done regardless of ramp Mode at the top of the
last ramp.
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.
Centered Mode
PSC Counter
PSCOUTn0
PSCOUTn1
–
–
–
–
Four Ramp mode
Two Ramp mode
One Ramp mode
Center Aligned mode
OCRnSA
0
Dead-Time 0
On-Time 0
PSC Cycle
OCRnRA
PSC Cycle
0
OCRnSB
Dead-Time 1
On-Time 1
OCRnRB
AT90PWM1
UPDATE
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