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ATTINY817-MFR. Datasheet(PDF) 179 Page - Microchip Technology

Part # ATTINY817-MFR.
Description  AVR짰 Microcontroller with Core Independent Peripherals and picoPower짰 Technology
PDF  492 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATTINY817-MFR. Datasheet(HTML) 179 Page - Microchip Technology

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21.2.1
Block Diagram
Figure 21-1. Timer/Counter Type B Block Diagram
Counter
=
CNT
= 0
"count"
"clear"
Control
EVCTRL
CTRLA
IF
(INT Req.)
TOP
ClockSelect
BOTTOM
Edge Select
CTRLB
Mode
CCMP
Output control
and
logic
Asynchronous
Synchronous
output
Asynchronous
output
Mode, Output enable, initial value
CLK_PER
Logic
Event System
TCB
DIV2
CLK_TCA
21.2.1.1 Noise Canceler
The noise canceler improves noise immunity by using a simple digital filter scheme. When the noise filter
is enabled the peripheral monitors the event channel and keeps a record of the last four observed
samples. If four consecutive samples are equal, the input is considered to be stable and the signal is fed
to the edge detector.
When enabled, the noise canceler introduces an additional delay of four system clock cycles between a
change applied to the input and the update of the input compare register.
The noise canceler uses the system clock and is therefore not affected by the prescaler.
21.2.2
Signal Description
Signal
Description
Type
WO
Digital asynchronous output
Waveform Output
Related Links
I/O Multiplexing and Considerations
21.2.3
System Dependencies
In order to use this peripheral, other parts of the system must be configured correctly, as described below.
Table 21-1. TCB System Dependencies
Dependency
Applicable
Peripheral
Clocks
Yes
CLKCTRL
I/O Lines and Connections
Yes
WO
ATtiny417/817
© 2017 Microchip Technology Inc.
Datasheet Complete
DS40001901B-page 179



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