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ATMEGA644-20AU Atmel MCU 8-bit ATmega AVR RISC 64KB Flash 3.3V/5V 44-Pin TQFP 8 from $4.42 (Aug 2016) Arrow Electronics Buy
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ATMEGA644-20AU Atmel MICROCONTROLLER MCU, 8 BIT, ATMEGA, 20MHZ, TQFP-44; Controller Family/Series:ATmega; CPU Speed:20MHz; Program Memory Size:64KB; RAM Memory Size:4KB; No. of Pins:44; MCU Case Style:TQFP; No. of I/O's:32; Supply Voltage Min:2.7V ;RoHS Compliant: Yes 293 from $4.62 (Aug 2016) Newark element14 Buy
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atmega644 usart code example

Catalog Datasheet MFG & Type PDF Document Tags
Abstract: Code Example in r16, SREG cli sbi EECR, EEMPE sbi EECR, EEPE out SREG, r16 ; restore SREG value (I-bit) ; store SREG value ; start EEPROM write ; disable interrupts during timed sequence C Code Example char , . Assembly Code Example sei ; set Global Interrupt Enable sleep; enter sleep, waiting for interrupt ; note: will enter sleep before any pending ; interrupt(s) C Code Example _enable_interrupt(); /* set , . 23 2593O 2593O­AVR­02/12 Assembly Code Example(1) EEPROM_write: ; Wait for completion of previous ... Atmel
Original
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376 pages,
4150.79 Kb

C/100 TEXT
datasheet frame
Abstract: can be used to avoid interrupts during the timed EEPROM write sequence. Assembly Code Example in r16 , ; start EEPROM write ; disable interrupts during timed sequence C Code Example char cSREG; cSREG = , following SEI will be executed before any pending interrupts, as shown in this example. Assembly Code , sleep before any pending ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt , ­AVR­04/06 Assembly Code Example() EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE ... Atmel
Original
datasheet

374 pages,
3035.97 Kb

TEXT
datasheet frame
Abstract: sequence. Assembly Code Example in r16, SREG cli ; store SREG value ; disable interrupts during , SREG value (I-bit) C Code Example char cSREG; cSREG = SREG; /* store SREG value */ /* disable , any pending interrupts, as shown in this example. Assembly Code Example sei ; set Global , ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt Enable */ _sleep(); /* enter , setting EEPE sbi EECR,EEPE ret C Code Example(1) void EEPROM_write(unsigned int uiAddress, unsigned ... Atmel
Original
datasheet

374 pages,
3078.25 Kb

ATmega644-20PU TEXT
datasheet frame
Abstract: can be used to avoid interrupts during the timed EEPROM write sequence. Assembly Code Example in r16 , ; start EEPROM write ; disable interrupts during timed sequence C Code Example char cSREG; cSREG = , following SEI will be executed before any pending interrupts, as shown in this example. Assembly Code , sleep before any pending ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt , ­AVR­06/06 Assembly Code Example() EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE ... Atmel
Original
datasheet

374 pages,
3069.67 Kb

TQFP44 package ATmega644 TEXT
datasheet frame
Abstract: sequence. Assembly Code Example in r16, SREG cli ; store SREG value ; disable interrupts during , SREG value (I-bit) C Code Example char cSREG; cSREG = SREG; /* store SREG value */ /* disable , any pending interrupts, as shown in this example. Assembly Code Example sei ; set Global , ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt Enable */ _sleep(); /* enter , finish. 23 2593N 2593N­AVR­07/10 Assembly Code Example(1) EEPROM_write: ; Wait for completion of ... Atmel
Original
datasheet

376 pages,
5684.16 Kb

comparator 12v 10bit ATmega644L ATmega644 ATMEGA324 board ATmega644-20PU atmega644 usart code example TEXT
datasheet frame
Abstract: can be used to avoid interrupts during the timed EEPROM write sequence. Assembly Code Example in r16 , ; start EEPROM write ; disable interrupts during timed sequence C Code Example char cSREG; cSREG = , following SEI will be executed before any pending interrupts, as shown in this example. Assembly Code , sleep before any pending ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt , ­AVR­01/07 Assembly Code Example() EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE ... Atmel
Original
datasheet

374 pages,
3118.58 Kb

TEXT
datasheet frame
Abstract: during the timed EEPROM write sequence. Assembly Code Example in r16, SREG cli ; store SREG value , SREG, r16 ; restore SREG value (I-bit) C Code Example char cSREG; cSREG = SREG; /* store SREG , executed before any pending interrupts, as shown in this example. Assembly Code Example sei ; set , pending ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt Enable , Assembly Code Example(1) EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE rjmp ... Atmel
Original
datasheet

376 pages,
2846.71 Kb

TEXT
datasheet frame
Abstract: can be used to avoid interrupts during the timed EEPROM write sequence. Assembly Code Example in r16 , ; start EEPROM write ; disable interrupts during timed sequence C Code Example char cSREG; cSREG = , following SEI will be executed before any pending interrupts, as shown in this example. Assembly Code , sleep before any pending ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt , ­AVR­07/06 Assembly Code Example() EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE ... Atmel
Original
datasheet

374 pages,
3069.38 Kb

TEXT
datasheet frame
Abstract: sequence. Assembly Code Example in r16, SREG cli ; store SREG value ; disable interrupts during , SREG value (I-bit) C Code Example char cSREG; cSREG = SREG; /* store SREG value */ /* disable , any pending interrupts, as shown in this example. Assembly Code Example sei ; set Global , ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt Enable */ _sleep(); /* enter , setting EEPE sbi EECR,EEPE ret C Code Example(1) void EEPROM_write(unsigned int uiAddress, unsigned ... Atmel
Original
datasheet

374 pages,
3124.35 Kb

ATmega644-20AU ATMEGA324 board TEXT
datasheet frame
Abstract: sequence. Assembly Code Example in r16, SREG cli ; store SREG value ; disable interrupts during , SREG value (I-bit) C Code Example char cSREG; cSREG = SREG; /* store SREG value */ /* disable , any pending interrupts, as shown in this example. Assembly Code Example sei ; set Global , ; interrupt(s) C Code Example _enable_interrupt(); /* set Global Interrupt Enable */ _sleep(); /* enter , any ongoing SPM command to finish. 23 2593M 2593M­AVR­08/07 Assembly Code Example(1) EEPROM_write ... Atmel
Original
datasheet

376 pages,
4407.9 Kb

ATmega644L atmega32 BLOCK DIAGRAM DESCRIPTION ATmega644 atmega644 usart code example TEXT
datasheet frame