AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 128

• Manufacturer Part Number: AT90PWM1-16MU
• Description: IC AVR PWM 8KB FLASH 16MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM1-16MU

• 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: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.5
16.5.1
128
Functional Description
AT90PWM1
Waveform Cycles
Table 37. Internal Outputs
Note:
The waveform generated by PSC can be described as a sequence of two waveforms.
The first waveform is relative to PSCOUTn0 output and part A of PSC. The part of this waveform
is sub-cycle A in the following figure.
The second waveform is relative to PSCOUTn1 output and part B of PSC. The part of this wave-
form is sub-cycle B in the following figure.
The complete waveform is ended with the end of sub-cycle B. It means at the end of waveform
B.
Figure 16-4. Cycle Presentation in 1, 2 & 4 Ramp Mode
4 Ramp Mode
2 Ramp Mode
1 Ramp Mode
SYnOut
PICRn
[11:0]
IRQPSCn
PSCnASY
StopOut
Name
1. See
2.
Ramp A0
See “Analog Synchronization” on page 152.
Figure 16-38 on page 152
Synchronization Output
PSC n Input Capture Register
Counter value at retriggering event
PSC Interrupt Request : three souces, overflow, fault, and input
capture
Stop Output (for synchronized mode)
Sub-Cycle A
ADC Synchronization (+ Amplifier Syncho. )
Ramp A
Description
Ramp A1
PSC Cycle
Ramp B0
Sub-Cycle B
Ramp B
(1)
Ramp B1
UPDATE
(2)
Signal
Register
12 bits
Signal
Signal
Type
Width
4378C–AVR–09/08