ATMEGA328P-PU Atmel, ATMEGA328P-PU Datasheet - Page 70
![MCU AVR 32K FLASH 28-PDIP](/photos/7/21/72189/453-28-dip_sml.jpg)
ATMEGA328P-PU
Manufacturer Part Number
ATMEGA328P-PU
Description
MCU AVR 32K FLASH 28-PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA48A-PU.pdf
(566 pages)
2.ATMEGA48A-PU.pdf
(33 pages)
3.ATMEGA48PA-MMH.pdf
(26 pages)
4.ATMEGA328P-PU.pdf
(567 pages)
Specifications of ATMEGA328P-PU
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 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
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
Through Hole
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, 6 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
Through Hole
Pin Count
28
Package Type
PDIP
Data Rom Size
1 KB
A/d Bit Size
10 bit
A/d Channels Available
6
Height
4.57 mm
Length
34.8 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Width
7.49 mm
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-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA328P-PU
Manufacturer:
IR
Quantity:
11 450
Company:
Part Number:
ATMEGA328P-PU
Manufacturer:
Atmel
Quantity:
58 579
Part Number:
ATMEGA328P-PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- ATMEGA48A-PU PDF datasheet
- ATMEGA48A-PU PDF datasheet #2
- ATMEGA48PA-MMH PDF datasheet #3
- ATMEGA328P-PU PDF datasheet #4
- Current page: 70 of 567
- Download datasheet (21Mb)
12.5
12.5.1
8271D–AVR–05/11
Register Description
Moving Interrupts Between Application and Boot Space, ATmega88A/88PA, ATmega168A/168PA and
ATmega328/328P
When the BOOTRST Fuse is programmed, the Boot section size set to 2Kbytes and the IVSEL
bit in the MCUCR Register is set before any interrupts are enabled, the most typical and general
program setup for the Reset and Interrupt Vector Addresses in ATmega328/328P is:
The MCU Control Register controls the placement of the Interrupt Vector table.
MCUCR – MCU Control Register
Note:
• Bit 1 – IVSEL: Interrupt Vector Select
When the IVSEL bit is cleared (zero), the Interrupt Vectors are placed at the start of the Flash
memory. When this bit is set (one), the Interrupt Vectors are moved to the beginning of the Boot
Loader section of the Flash. The actual address of the start of the Boot Flash Section is deter-
mined by the BOOTSZ Fuses. Refer to the section
Self-Programming” on page 280
tables, a special write procedure must be followed to change the IVSEL bit:
Bit
0x35 (0x55)
Read/Write
Initial Value
;
.org 0x3C00
0x3C00
0x3C01
0x3C02
0x3C03
0x3C04
0x3C05
Address Labels Code
;
.org 0x3C00
0x3C00
0x3C02
0x3C04
...
0x3C32
;
0x3C33
0x3C34
0x3C35
0x3C36
0x3C37
0x3C38
1. BODS and BODSE only available for picoPower devices ATmega48PA/88PA/168PA/328P
RESET: ldi
RESET: ldi
R
7
–
0
ATmega48A/PA/88A/PA/168A/PA/328/P
out
ldi
out
sei
<instr>
jmp
jmp
jmp
...
jmp
out
ldi
out
sei
<instr>
BODS
R/W
6
0
(1)
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
RESET
EXT_INT0
EXT_INT1
...
SPM_RDY
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
BODSE
xxx
xxx
for details. To avoid unintentional changes of Interrupt Vector
R/W
5
0
(1)
PUD
R/W
4
0
; Set Stack Pointer to top of RAM
; Enable interrupts
Comments
; Reset handler
; IRQ0 Handler
; IRQ1 Handler
;
; Store Program Memory Ready Handler
; Set Stack Pointer to top of RAM
; Enable interrupts
”Boot Loader Support – Read-While-Write
R
3
–
0
R
2
–
0
IVSEL
R/W
1
0
IVCE
R/W
0
0
MCUCR
70
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