ATTINY861A-XUR Atmel, ATTINY861A-XUR Datasheet - Page 105
ATTINY861A-XUR
Manufacturer Part Number
ATTINY861A-XUR
Description
MCU AVR 8KB FLASH 20MHZ 20TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY461A-MU.pdf
(292 pages)
Specifications of ATTINY861A-XUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY861A-XUR
Manufacturer:
IDT
Quantity:
1 300
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12.10 Fault Protection Unit
8197B–AVR–01/10
Figure 12-17. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 12-18
Figure 12-18. Timer/Counter Timing Diagram, with Prescaler (f
The Timer/Counter1 incorporates a Fault Protection unit, which can be set to disable the PWM
output pins when an external event is triggered. The external signal indicating an event can be
applied via the external interrupt INT0 pin or, alternatively, via the analog-comparator unit. The
Fault Protection unit is illustrated in
directly a part of the Fault Protection unit are gray shaded.
Figure 12-19. Fault Protection Unit Block Diagram
Fault Protection mode is enabled by setting the Fault Protection Enable (FPEN1) bit and trig-
gered by a change in logic level at external interrupt pin (INT0). Alternatively, fault protection
mode can be triggered by the Analog Comparator Output (ACO).
When Fault Protection is triggered, the COM1x bits are cleared, Output Comparators are discon-
nected from the PWM output pins and PORTB register bits are connected to the PWM output
TCNTn
(clk
TCNTn
OCRnx
(clk
OCFnx
TOVn
clk
clk
clk
INT0
clk
PCK
PCK
PCK
Tn
PCK
Tn
/8)
/8)
Comparator
shows the setting of TOV1 in Phase and Frequency Correct PWM Mode.
Analog
ACO*
BOTTOM + 1
OCRnx - 1
FPAC1
Figure
Canceler
FPNC1
Noise
BOTTOM + 1
12-19. The elements of the block diagram that are not
OCRnx
OCRnx Value
FPES1
Detector
Edge
FPEN1
OCRnx + 1
clkT1
BOTTOM
/8)
FAULT_PROTECTION (Int. Req.)
Timer/Counter1
BOTTOM + 1
clkT1
OCRnx + 2
/8)
105
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