Data Sheet
Table Of Contents
- Introduction
- Features
- Table of Contents
- 1. Block Diagram
- 2. Pinout
- 3. I/O Multiplexing and Considerations
- 4. Electrical Characteristics
- 4.1. Disclaimer
- 4.2. Absolute Maximum Ratings
- 4.3. General Operating Ratings
- 4.4. Power Considerations
- 4.5. Power Consumption
- 4.6. Peripherals Power Consumption
- 4.7. BOD and POR Characteristics
- 4.8. External Reset Characteristics
- 4.9. Oscillators and Clocks
- 4.10. I/O Pin Characteristics
- 4.11. USART
- 4.12. SPI
- 4.13. TWI
- 4.14. VREF
- 4.15. ADC
- 4.16. AC
- 4.17. UPDI Timing
- 4.18. Programming Time
- 5. Typical Characteristics
- 6. Ordering Information
- 7. Online Package Drawings
- 8. Package Drawings
- 9. Conventions
- 10. Data Sheet Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System Certified by DNV
- Worldwide Sales and Service
9. Conventions
9.1 Memory Size and Type
Table 9-1. Memory Size and Bit Rate
Symbol Description
KB kilobyte (2
10
= 1024)
MB megabyte (2
20
= 1024*1024)
GB gigabyte (2
30
= 1024*1024*1024)
b bit (binary ‘0’ or ‘1’)
B byte (8 bits)
1 kbit/s 1,000 bit/s rate (not 1,024 bit/s)
1 Mbit/s 1,000,000 bit/s rate
1 Gbit/s 1,000,000,000 bit/s rate
word 16-bit
9.2 Frequency and Time
Table 9-2. Frequency and Time
Symbol Description
kHz 1 kHz = 10
3
Hz = 1,000 Hz
KHz 1 KHz = 1,024 Hz, 32 KHz = 32,768 Hz
MHz 1 MHz = 10
6
Hz = 1,000,000 Hz
GHz 1 GHz = 10
9
Hz = 1,000,000,000 Hz
ms 1 ms = 10
-3
s = 0.001s
µs 1 µs = 10
-6
s = 0.000001s
ns 1 ns = 10
-9
s = 0.000000001s
ATmega809/1609/3209/4809 – 48-pin
Conventions
© 2019 Microchip Technology Inc.
Datasheet Preliminary
DS40002016B-page 77