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AVR® Microcontroller with Core Independent Peripherals and PicoPower® Technology ATmega328PB
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ATmega328PB
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33
Electrical Characteristics
33.5
Clock Characteristics
33.5.2
External Clock Drive Waveforms
ATmega328PB
Introduction
Features
1
Description
2
Configuration Summary
3
Ordering Information
4
Block Diagram
5
Pin Configurations
6
I/O Multiplexing
7
Resources
8
About Code Examples
9
AVR CPU Core
10
AVR Memories
11
System Clock and Clock Options
12
CFD - Clock Failure Detection mechanism
13
Power Management and Sleep Modes
14
System Control and Reset
15
INT - Interrupts
16
EXTINT - External Interrupts
17
I/O-Ports
18
TC
0
- 8-bit Timer/Counter
0
with PWM
19
TC
1, 3, 4
- 16-bit Timer/Counter
1, 3, 4
with PWM
20
Timer/Counter 0, 1
, 3
, 4
Prescalers
21
TC
2
- 8-bit Timer/Counter
2
with PWM and Asynchronous Operation
22
OCM - Output Compare Modulator
23
SPI – Serial Peripheral Interface
24
USART - Universal Synchronous Asynchronous Receiver Transceiver
25
USARTSPI - USART in SPI Mode
26
TWI - Two-Wire Serial Interface
27
AC - Analog Comparator
28
ADC - Analog-to-Digital Converter
29
PTC - Peripheral Touch Controller
30
debugWIRE On-chip Debug System
31
BTLDR - Boot Loader Support – Read-While-Write Self-Programming
32
MEMPROG - Memory Programming
33
Electrical Characteristics
33.1
Absolute Maximum Ratings
33.2
DC Characteristics
33.3
Power Consumption
33.4
Speed Grades
33.5
Clock Characteristics
33.5.1
Calibrated Internal RC Oscillator Accuracy
33.5.2
External Clock Drive Waveforms
33.5.3
External Clock Drive
33.6
System and Reset Characteristics
33.7
SPI Timing Characteristics
33.8
Two-Wire Serial Interface Characteristics
33.9
ADC Characteristics
33.10
Parallel Programming Characteristics
34
Typical Characteristics
35
Register Summary
36
Instruction Set Summary
37
Packaging Information
38
Errata
39
Revision History
The Microchip Web Site
Customer Change Notification Service
Customer Support
Microchip Devices Code Protection Feature
Legal Notice
Trademarks
Quality Management System Certified by DNV
Worldwide Sales and Service
33.5.2 External Clock Drive Waveforms
Figure 33-2.
External Clock Drive Waveforms
