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ATTINY412 Datasheet(PDF) 65 Page - Microchip Technology

Part # ATTINY412
Description  AVR짰 Microcontroller with Core Independent Peripherals and picoPower짰 technology
PDF  479 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATTINY412 Datasheet(HTML) 65 Page - Microchip Technology

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10.5.3
Main Clock Lock
Name: 
MCLKLOCK
Offset:  0x02
Reset: 
0x00
Property:
 
Configuration Change Protection
Bit
7
6
5
4
3
2
1
0
LOCKEN
Access
R
R
R
R
R
R
R
R/W
Reset
0
0
0
0
0
0
0
x
Bit 0 – LOCKEN: Lock Enable
Writing this bit to '1' will lock the CLKCTRL.MCLKCTRLA and CLKCTRL.MCLKCTRLB registers, and, if
applicable, the calibration settings for the current Main Clock source from further software updates. Once
locked, the CLKCTRL.MCLKLOCK registers cannot be accessed until the next hardware Reset.
This provides protection for the CLKCTRL.MCLKCTRLA and CLKCTRL.MCLKCTRLB registers and
calibration settings for the Main Clock source from unintentional modification by software.
Related Links
FUSES - Configuration and User Fuses
10.5.4
Main Clock Status
Name: 
MCLKSTATUS
Offset:  0x03
Reset: 
0x00
Property:
 
-
Bit
7
6
5
4
3
2
1
0
EXTS
XOSC32KS
OSC32KS
OSC20MS
SOSC
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit 7 – EXTS: External Clock Status
Value
Description
0
EXTCLK has not started
1
EXTCLK has started
Bit 6 – XOSC32KS: XOSC32K Status
The status bit will only be available if the source is requested as the main clock or by another module. If
the oscillators RUNSTDBY bit is set but the oscillator is unused/not requested this bit will be 0.
Value
Description
0
XOSC32K is not stable
1
XOSC32K is stable
ATtiny212/412
© 2017 Microchip Technology Inc.
Datasheet Preliminary
DS40001911A-page 65



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