ATMEGA640 datasheet(424/436 Pages) MICROCHIP

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424

ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]

DS40002211A

38.8 Rev. 2549K-01/07

38.9 Rev. 2549J-09/06

38.10 Rev. 2549I-07/06

38.11 Rev. 2549H-06/06

Updated Table 1-1 on page 3.

Updated “Pin Descriptions” on page 7.

Updated “Stack Pointer” on page 15.

Updated “Bit 1 – EEPE: EEPROM Programming Enable” on page 35.

Updated Assembly code example in “Thus, when the BOD is not enabled, after setting the ACBG bit or

enabling the ADC, the user must always allow the reference to start up before the output from the Analog

Comparator or ADC is used. To reduce power consumption in Power-down mode, the user can avoid the

three conditions above to ensure that the reference is turned off before entering Power-down mode.” on

page 60.

Updated “EIMSK – External Interrupt Mask Register” on page 111.

Updated Bit description in “PCIFR – Pin Change Interrupt Flag Register” on page 113.

Updated code example in “USART Initialization” on page 205.

Updated Figure 26-8 on page 276.

10.

Updated “DC Characteristics” on page 355.

Updated “” on page 46.

Updated code example in “Moving Interrupts Between Application and Boot Section” on page 107.

Updated “Timer/Counter Prescaler” on page 180.

Updated “Device Identification Register” on page 296.

Updated “Signature Bytes” on page 328.

Updated “Instruction Set Summary” on page 404.

Added “Data Retention” on page 10.

Updated Table 16-3 on page 126, Table 16-6 on page 127, Table 16-8 on page 128, Table 17-2 on page

145, Table 17-4 on page 155, Table 17-5 on page 155, Table 20-3 on page 182, Table 20-6 on page 183

and Table 20-8 on page 184.

Updated “Fast PWM Mode” on page 146.

Updated “” on page 46.

Updated “OSCCAL – Oscillator Calibration Register” on page 48.

Added Table 31-1 on page 359.

ATMEGA640 Datasheet(PDF) 424 Page - Microchip Technology