Conventions; Numerical Notation; Memory Size And Type; Frequency And Time - Microchip Technology megaAVR 0 Series Manual

3.

Conventions

3.1

Numerical Notation

Table 3-1. Numerical Notation
Symbol
165
0b0101
'0101'
0x3B24
X
Z
3.2

Memory Size and Type

Table 3-2. Memory Size and Bit Rate
Symbol
KB
MB
GB
b
B
1 kbit/s
1 Mbit/s
1 Gbit/s
word
3.3

Frequency and Time

Table 3-3. Frequency and Time
Symbol
kHz
KHz
MHz
©
2018 Microchip Technology Inc.
Description
Decimal number
Binary number (example 0b0101 = 5 decimal)
Binary numbers are given without prefix if
unambiguous
Hexadecimal number
Represents an unknown or don't care value
Represents a high-impedance (floating) state for
either a signal or a bus
Description
10
kilobyte (2 = 1024)
20
megabyte (2 = 1024*1024)
30
gigabyte (2 = 1024*1024*1024)
bit (binary '0' or '1')
byte (8 bits)
1,000 bit/s rate (not 1,024 bit/s)
1,000,000 bit/s rate
1,000,000,000 bit/s rate
16-bit
Description
3
1 kHz = 10 Hz = 1,000 Hz
1 KHz = 1,024 Hz, 32 KHz = 32,768 Hz
6
1 MHz = 10 Hz = 1,000,000 Hz
Datasheet Preliminary
®
megaAVR 0-Series
Conventions
DS40002015A-page 11