Datasheet ATmega164A - Summary (Microchip) - 7

3. Ordering Information Speed [MHz](3) Power Supply [V] Ordering Code(2) Package(1) Operational Range
20 1.8 - 5.5 ATmega164A-AU 44A Industrial (-40°C to 85°C) ATmega164A-AUR(5) 44A ATmega164A-PU 40P6 ATmega164A-MU 44M1 ATmega164A-MUR(5) 44M1 ATmega164A-MCH(4) 44MC ATmega164A-MCHR(4)(5) 44MC ATmega164A-CU 49C2 ATmega164A-CUR(5) 49C2
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. NiPdAu Lead Finish. 5. 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 × 7 × 1.0mm body, lead pitch 0.50mm, Thermally Enhanced Plastic Very Thin Quad Flat No- Lead (VQFN) 44MC 44-lead (2-row Staggered), 5 × 5 × 1.0mm body, 2.60 × 2.60mm Exposed Pad, Quad Flat No-Lead Package (QFN) 49C2 49-ball, (7 × 7 Array) 0.65mm Pitch, 5 × 5 × 1mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA) Atmel ATmega164A [DATASHEET] 7 Atmel-42712C-ATmega164A_Datasheet_Summary-10/2016 Document Outline Introduction Feature Table of Contents 1. Description 2. Configuration Summary 3. Ordering Information 4. Block Diagram 5. Pin Configurations 5.1. Pinout 5.1.1. PDIP 5.1.2. TQFN and QFN 5.1.3. DRQFN 5.1.4. VFBGA 5.2. Pin Descriptions 5.2.1. VCC 5.2.2. GND 5.2.3. Port A (PA[7:0]) 5.2.4. Port B (PB[7:0]) 5.2.5. Port C (PC[7:0]) 5.2.6. Port D (PD[7:0]) 5.2.7. RESET 5.2.8. XTAL1 5.2.9. XTAL2 5.2.10. AVCC 5.2.11. AREF 6. I/O Multiplexing 7. General Information 7.1. Resources 7.2. Data Retention 7.3. About Code Examples 7.4. Capacitive Touch Sensing 7.4.1. QTouch Library 8. Packaging Information 8.1. 40-pin PDIP 8.2. 44-pin TQFP 8.3. 44-pin VQFN 8.4. 44-pin QFN 8.5. 49-pin VFBGA