AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 140
AT90PWM1-16MU
Manufacturer Part Number
AT90PWM1-16MU
Description
IC AVR PWM 8KB FLASH 16MHZ 32QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM1-16SU.pdf
(297 pages)
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
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16.8.4
16.8.4.1
16.8.4.2
140
AT90PWM1
PSC Input Configuration
Filter Enable
Signal Polarity
Figure 16-19. Burst Generation
The PSC Input Configuration is done by programming bits in configuration registers.
If the “Filter Enable” bit is set, a digital filter of 4 cycles is inserted before evaluation of the signal.
The disable of this function is mainly needed for prescaled PSC clock sources, where the noise
cancellation gives too high latency.
Important: If the digital filter is active, the level sensitivity is true also with a disturbed PSC clock
to deactivate the outputs (emergency protection of external component). Likewise when used as
fault input, PSCn Input A or Input B have to go through PSC to act on PSCOUTn0/1/2/3 output.
This way needs that CLK
(PAOCnA/B), PSCnIN0/1 input can desactivate directly the PSC output. Notice that in this case,
input is still taken into account as usually by Input Module System as soon as CLK
PSC Input Filterring
One can select the active edge (edge modes) or the active level (level modes) See PELEVnx bit
description in Section “PSC n Input A Control Register – PFRCnA”, page 16116.25.13.
PSCOUTn0
PSCOUTn1
PSCn Input A
(high level)
PSCn Input A
(low level)
PSC Input
Module X
CLK
PSC
PSC
OFF
is running. So thanks to PSC Asynchronous Output Control bit
Digital
Filter
4 x CLK
PSC
BURST
Ouput
Stage
PSCn Input A or B
PSCOUTnX
PIN
PSC
4378C–AVR–09/08
is running.
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