ATMEGA328P-AU Atmel, ATMEGA328P-AU Datasheet - Page 16

MCU AVR 32K FLASH 32TQFP

ATMEGA328P-AU

Manufacturer Part Number
ATMEGA328P-AU
Description
MCU AVR 32K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA328P-AU

Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
23
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
2KB
# I/os (max)
23
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
1.8V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
TQFP
Controller Family/series
AVR MEGA
No. Of I/o's
23
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
20MHz
Rohs Compliant
Yes
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA328P-20AU
ATMEGA328P-20AU
Q3790246

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7. AVR Memories
7.1
7.2
8271C–AVR–08/10
Overview
In-System Reprogrammable Flash Program Memory
T h i s
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P. The AVR architecture has two main
memory spaces, the Data Memory and the Program Memory space. In addition, the
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P features an EEPROM Memory for data
storage. All three memory spaces are linear and regular.
The ATmega48A/48PA/88A/88PA/168A/168PA/328/328P contains 4/8/16/32K bytes On-chip
In-System Reprogrammable Flash memory for program storage. Since all AVR instructions are
16 or 32 bits wide, the Flash is organized as 2/4/8/16K x 16. For software security, the Flash
Program memory space is divided into two sections, Boot Loader Section and Application Pro-
gram Section in ATmega88PA and ATmega168PA. See SELFPRGEN description in section
”SPMCSR – Store Program Memory Control and Status Register” on page 294
The Flash memory has an endurance of at least 10,000 write/erase cycles. The
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P Program Counter (PC) is 11/12/13/14 bits
wide, thus addressing the 2/4/8/16K program memory locations. The operation of Boot Program
section and associated Boot Lock bits for software protection are described in detail in
gramming the Flash, ATmega 48A/48PA” on page 270
Write Self-Programming” on page
description on Flash Programming in SPI- or Parallel Programming mode.
Constant tables can be allocated within the entire program memory address space (see the LPM
– Load Program Memory instruction description).
Timing diagrams for instruction fetch and execution are presented in
ing” on page
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
s e c t i o n
13.
d e s c r i b e s
279.
”Memory Programming” on page 296
t h e
d i f f e r e n t
and
”Boot Loader Support – Read-While-
m e m o r i e s
”Instruction Execution Tim-
contains a detailed
for more details.
i n
”Self-Pro-
t h e
16

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