ATMEGA640 datasheet(416/436 Pages) MICROCHIP

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416

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

DS40002211A

37. Errata

37.1 ATmega640 rev. B

• Inaccurate ADC conversion in differential mode with 200× gain

• High current consumption in sleep mode

1. Inaccurate ADC conversion in differential mode with 200× gain

With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.

Problem Fix/Workaround

None.

2. High current consumption in sleep mode

If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will

increase during sleep when executing the SLEEP instruction directly after a SEI instruction.

Problem Fix/Workaround

Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.

37.2 ATmega640 rev. A

• Inaccurate ADC conversion in differential mode with 200× gain

• High current consumption in sleep mode

Inaccurate ADC conversion in differential mode with 200× gain

With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.

Problem Fix/Workaround

None.

2. High current consumption in sleep mode

If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will

increase during sleep when executing the SLEEP instruction directly after a SEI instruction.

Problem Fix/Workaround

Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.

37.3 ATmega1280 rev. B

• High current consumption in sleep mode

1. High current consumption in sleep mode

If a pending interrupt cannot wake the part up from the selected sleep mode, the current consumption will

increase during sleep when executing the SLEEP instruction directly after a SEI instruction.

Problem Fix/Workaround

Before entering sleep, interrupts not used to wake the part from the sleep mode should be disabled.

37.4 ATmega1280 rev. A

• Inaccurate ADC conversion in differential mode with 200× gain

• High current consumption in sleep mode

Inaccurate ADC conversion in differential mode with 200× gain

With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may reach 64 LSB.

ATMEGA640 bảng dữ liệu(PDF) 416 Page - Microchip Technology