ATMEGA325P-20MU Atmel, ATMEGA325P-20MU Datasheet - Page 358
![IC MCU AVR 32K FLASH 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA325P-20MU
Manufacturer Part Number
ATMEGA325P-20MU
Description
IC MCU AVR 32K FLASH 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA3250P-20AU.pdf
(364 pages)
Specifications of ATMEGA325P-20MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SPI, UART, USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
54
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
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA325P-16MU
ATMEGA325P-16MU
ATMEGA325P-16MU
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ii
ATmega325P/3250P
9
10 System Control and Reset .................................................................... 45
11 Interrupts ................................................................................................ 53
12 External Interrupts ................................................................................. 58
13 I/O-Ports .................................................................................................. 63
Power Management and Sleep Modes ................................................. 38
8.6Calibrated Internal RC Oscillator .............................................................................33
8.7External Clock .........................................................................................................34
8.8Clock Output Buffer .................................................................................................35
8.9Timer/Counter Oscillator .........................................................................................35
8.10System Clock Prescaler ........................................................................................35
8.11Register Description ..............................................................................................36
9.1Overview .................................................................................................................38
9.2Sleep Modes ...........................................................................................................38
9.3BOD Disable ............................................................................................................39
9.4Idle Mode .................................................................................................................39
9.5ADC Noise Reduction Mode ...................................................................................39
9.6Power-down Mode ..................................................................................................40
9.7Power-save Mode ...................................................................................................40
9.8Standby Mode .........................................................................................................40
9.9Power Reduction Register .......................................................................................40
9.10Minimizing Power Consumption ............................................................................41
9.11Register Description ..............................................................................................43
10.1Resetting the AVR .................................................................................................45
10.2Reset Sources .......................................................................................................45
10.3Internal Voltage Reference ....................................................................................48
10.4Watchdog Timer ....................................................................................................49
10.5Register Description ..............................................................................................50
11.1Overview ...............................................................................................................53
11.2Interrupt Vectors ....................................................................................................53
11.3Register Description ..............................................................................................56
12.1Overview ...............................................................................................................58
12.2Pin Change Interrupt Timing .................................................................................59
12.3Register Description ..............................................................................................59
13.1Overview ...............................................................................................................63
8023F–AVR–07/09
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