astic Very Thin Quad Flat No-Lead (VQFN) 564 8272C-AVR-06/11 ATmega164A/PA/324A/PA/644A/PA/1284/P 32.6 ATmega644PA Speed (MHz)(3) 20 Notes: Power Supply 1.8 - 5.5V Ordering Code(2) Package(1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational Range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed Grades" on page 335. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 565 8272C-AVR-06/11 ATmega164A/PA/3

Thin Quad Flat No-Lead (VQFN) 21 8272ES-AVR-04/2013 ATmega164A/PA/324A/PA/644A/PA/1284/P 9.6 Atmel ATmega644PA Speed [MHz] (3) 20 Notes: Power supply 1.8 - 5.5V Ordering code (2) Package (1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 336. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 22 8272ES-AVR-04/2013 ATmega164A/PA/32

ry Thin Quad Flat No-Lead (VQFN) 21 8272DS-AVR-05/12 ATmega164A/PA/324A/PA/644A/PA/1284/P 9.6 Atmel ATmega644PA Speed [MHz] (3) 20 Notes: Power supply 1.8 - 5.5V Ordering code (2) Package (1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed Grades" on page 335. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 22 8272DS-AVR-05/12 ATmega164A/PA/324A

A/164PA/324A/324PA/644A/644PA/1284/1284P [DATASHEET SUMMARY] Atmel-8272FS-AVR--07/2014 21 9.6 Atmel ATmega644PA Speed [MHz] (3) 20 Notes: Power supply 1.8 - 5.5V Ordering code (2) Package (1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 324. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) ATmega164A/164PA/324A/324PA/644A/644PA

astic Very Thin Quad Flat No-Lead (VQFN) 564 8272B-AVR-05/11 ATmega164A/PA/324A/PA/644A/PA/1284/P 32.6 ATmega644PA Speed (MHz)(3) 20 Notes: Power Supply 1.8 - 5.5V Ordering Code(2) Package(1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational Range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed Grades" on page 335. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 565 8272B-AVR-05/11 ATmega164A/PA/3

Very Thin Quad Flat No-Lead (VQFN) 21 8272AS-AVR-01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 8.6 ATmega644PA Speed (MHz)(3) 20 Notes: Power Supply 1.8 - 5.5V Ordering Code(2) Package(1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational Range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed Grades" on page 333. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 22 8272AS-AVR-01/10 164A/164PA/324A

164PA/324A/324PA/644A/644PA/1284/1284P [DATASHEET SUMMARY] Atmel-8272GS-AVR-01/2015 21 9.6 Atmel ATmega644PA Speed [MHz] (3) 20 20 Notes: Power supply Ordering code (2) Package (1) 1.8 - 5.5V ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 85oC) 1.8 - 5.5V ATmega644PA-AN ATmega644PA-ANR(4) ATmega644PA-PN ATmega644PA-MN ATmega644PA-MNR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 105oC) Operational range 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 324. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44

ga164A/164PA/324A/324PA/644A/644PA/1284/1284P [DATASHEET] Atmel-8272G-AVR-01/2015 639 34.6 Atmel ATmega644PA Speed [MHz] (3) 20 20 Notes: Power supply Ordering code (2) Package (1) 1.8 - 5.5V ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 85oC) 1.8 - 5.5V ATmega644PA-AN ATmega644PA-ANR(4) ATmega644PA-PN ATmega644PA-MN ATmega644PA-MNR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 105oC) Operational range 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 324. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44

y Thin Quad Flat No-Lead (VQFN) 564 8272D-AVR-05/12 ATmega164A/PA/324A/PA/644A/PA/1284/P 32.6 Atmel ATmega644PA Speed [MHz] (3) 20 Notes: Power supply 1.8 - 5.5V Ordering code (2) Package (1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 335. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 565 8272D-AVR-05/12 ATmega164A/PA/324A

chnology Inc. Data Sheet Complete DS40002070A-page 647 ATmega164A/PA/324A/PA/644A/PA/1284/P 34.6 ATmega644PA Speed [MHz] (3) 20 20 Notes: Power supply Ordering code (2) Package (1) 1.8 - 5.5V ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 85oC) 1.8 - 5.5V ATmega644PA-AN ATmega644PA-ANR(4) ATmega644PA-PN ATmega644PA-MN ATmega644PA-MNR(4) 44A 44A 40P6 44M1 44M1 Industrial (-40oC to 105oC) Operational range 1. This device can also be supplied in wafer form. Contact your local sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed grades" on page 332. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x

_Complete-10/2016 10 3. Ordering Information Speed [MHz](3) Power Supply [V] 20 1.8 - 5.5 20 1.8 - 5.5 Ordering Code(2) Package(1) Operational Range ATmega644PA-AU 44A Industrial (-40C to 85C) ATmega644PA-AUR(4) 44A ATmega644PA-PU 40P6 ATmega644PA-MU 44M1 ATMEGA644PA-MUR(4) 44M1 ATmega644PA-AN 44A ATmega644PA-ANR(4) 44A ATmega644PA-PN 40P6 ATmega644PA-MN 44M1 ATmega644PA-MNR(4) 44M1 Industrial (-40C to 105C) Note: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. Refer to Speed Grades for Speed vs. VCC 4. Tape & Reel. Package Type 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44A 44-lead, Thin (1.0mm) Plastic Quad Flat Package (TQFP) 44M1 44-pad, 7 x 7 x 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat

ery Thin Quad Flat No-Lead (VQFN) 562 8272A-AVR-01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 31.6 ATmega644PA Speed (MHz)(3) 20 Notes: Power Supply 1.8 - 5.5V Ordering Code(2) Package(1) ATmega644PA-AU ATmega644PA-AUR(4) ATmega644PA-PU ATmega644PA-MU ATMEGA644PA-MUR(4) 44A 44A 40P6 44M1 44M1 Operational Range Industrial (-40oC to 85oC) 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For Speed vs. VCC see "Speed Grades" on page 333. 4. Taper & Reel. Package Type 44A 44-lead, Thin (1.0 mm) Plastic Gull Wing Quad Flat Package (TQFP) 40P6 40-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) 44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN) 563 8272A-AVR-01/10 164A/164PA/324A