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atmega2560_2561.pdf
update the temporary regis- ter, the main code must disable the interrupts during the 16-bit access. 139 2549I–AVR–07/06 The following code examples show how to do an atomic read of the TCNTn Register contents. Reading any of the OCRnA/B/C or ICRn Registers can be done by using the same principle. (1)
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mega644.pdf
flags Synchronization Unit clI/O clASY asynchronous mode Status flags select (ASn) ASSRn TCCRnA TCCRnB 139 8011O–AVR–07/10 ATmega164P/324P/644P 14.2.1 Registers The Timer/Counter (TCNT2) and Output Compare Register (OCR2A and OCR2B) are 8-bit reg- isters. Interrupt request (abbreviated to Int.Req.) signals
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ATMega164_324_644_1284pa.pdf
Initial Value 0 0 0 0 0 0 0 0 Bit 7:6 – Reserved These bits are unused and will always read as zero. 139 8272C–AVR–06/11 ATmega164A/PA/324A/PA/644A/PA/1284/P Bit 5 – ICF1: Timer/Counter1, Input Capture Flag This flag is set when a capture event occurs on the ICP1 pin. When the Input Capture Register (ICR1
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ATmegaXX4.pdf
flags Synchronization Unit clI/O clASY asynchronous mode Status flags select (ASn) ASSRn TCCRnA TCCRnB 139 8011G–AVR–08/07 16.2.1 Registers The Timer/Counter (TCNT2) and Output Compare Register (OCR2A and OCR2B) are 8-bit reg- isters. Interrupt request (abbreviated to Int.Req.) signals are all visible in
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Datasheet_ATmega1281_doc2549.pdf
Register contents. Reading any of the OCRnA/B/C or ICRn Registers can be done by using the same principle 139 2549L–AVR–08/07 . Assembly Code Example(1) TIM16_ReadTCNTn: ; Save global interrupt flag in r18,SREG ; Disable interrupts cli ; Read TCNTn into r17:r16 in r16,TCNTnL in r17,TCNTnH ; Restore global interrupt
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ATmega1284P_128KByte.pdf
bits are always read as zero. 2020 Microchip Technology Inc. Data Sheet Complete DS40002070B-page 139 ATmega164A/PA/324A/PA/644A/PA/1284/P 16.12.4 TCNT1H and TCNT1L –Timer/Counter1 Bit 7 6 5 4 3 2 1 0 (0x85) TCNT1[15:8] TCNT1H (0x84) TCNT1[7:0] TCNT1L Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial
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OE2CHL.ASM
label1782 CODE 783Fh label1784 CODE 7B68h label1786 CODE 7B97h label1788 CODE 7B8Eh label1796 CODE 7BD4h label1800 CODE 7BE6h label1810 CODE 7A38h label1814 CODE 7C63h label1816 CODE 7C7Dh label1818 CODE 221Ch label1825 CODE 1810h label1826 CODE 7D36h label1827 CODE 7815h label1828 CODE 7D57h label1829
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