Datasheet ATmega328/P - Summary (Microchip) - 22

11.3. 28-pin 28M1
D C 1 2 Pin 1 ID 3 E
SIDE VIEW TOP VIEW
A1 A y K D2 0.45
COMMON DIMENSIONS
1 (Unit of Measure = mm) 2 R 0.20
SYMBOL MIN NOM MAX NOTE
3 A 0.80 0.90 1.00 E2 A1 0.00 0.02 0.05 b b 0.17 0.22 0.27 C 0.20 REF D 3.95 4.00 4.05 2.35 2.40 2.45 L D2 E 3.95 4.00 4.05 e E2 2.35 2.40 2.45 0.4 Ref e 0.45 (4x)
BOTTOM VIEW
L 0.35 0.40 0.45 y 0.00 – 0.08 Note: The ter mi nal #1 ID is a Laser -ma r ked Feat ur e . K 0.20 – – 10/24/08
TITLE GPC DRAWING NO. REV. Package Drawing Contact: 28M1,
28-pad, 4 x 4 x 1.0mm Body, Lead Pitch 0.45mm, [email protected] 2.4 x 2.4mm Exposed Pad, Thermally Enhanced ZBV 28M1 B Plastic Very Thin Quad Flat No Lead Package (VQFN) Atmel ATmega328/P [DATASHEET] 22 Atmel-42735B-328/P_Datasheet_Summary-11/2016 Document Outline Introduction Feature Table of Contents 1. Description 2. Configuration Summary 3. Ordering Information 3.1. ATmega328 3.2. ATmega328P 4. Block Diagram 5. Pin Configurations 5.1. Pin-out 5.2. Pin Descriptions 5.2.1. VCC 5.2.2. GND 5.2.3. Port B (PB[7:0]) XTAL1/XTAL2/TOSC1/TOSC2 5.2.4. Port C (PC[5:0]) 5.2.5. PC6/RESET 5.2.6. Port D (PD[7:0]) 5.2.7. AVCC 5.2.8. AREF 5.2.9. ADC[7:6] (TQFP and VFQFN Package Only) 6. I/O Multiplexing 7. Resources 8. Data Retention 9. About Code Examples 10. Capacitive Touch Sensing 10.1. QTouch Library 11. Packaging Information 11.1. 32-pin 32A 11.2. 32-pin 32M1-A 11.3. 28-pin 28M1 11.4. 28-pin 28P3