ATMEGA164A-MCHR Atmel, ATMEGA164A-MCHR Datasheet - Page 573
ATMEGA164A-MCHR
Manufacturer Part Number
ATMEGA164A-MCHR
Description
IC MCU AVR 16K 20MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA164A-MCHR.pdf
(581 pages)
Specifications of ATMEGA164A-MCHR
Package / Case
44-VQFN Exposed Pad
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
20MHz
Number Of I /o
32
Eeprom Size
512 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
1K x 8
Program Memory Size
16KB (16K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
I²C, SPI, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Table of Contents
8272A–AVR–01/10
1
2
3
4
5
6
7
8
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 5
Resources ................................................................................................. 9
About Code Examples ............................................................................. 9
Data Retention .......................................................................................... 9
AVR CPU Core ........................................................................................ 10
AVR Memories ........................................................................................ 19
System Clock and Clock Options ......................................................... 30
1.1Pinout - PDIP/TQFP/VQFN/QFN/MLF for
1.2Pinout - DRQFN for ATmega164A/164PA/324A/324PA ...........................................3
1.3Pinout - VFBGA for ATmega164A/164PA/324A/324PA ............................................4
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA,
2.3Pin Descriptions ........................................................................................................7
6.1Overview .................................................................................................................10
6.2ALU – Arithmetic Logic Unit ....................................................................................11
6.3Status Register ........................................................................................................11
6.4General Purpose Register File ................................................................................13
6.5Stack Pointer ...........................................................................................................14
6.6Instruction Execution Timing ...................................................................................15
6.7Reset and Interrupt Handling ..................................................................................16
7.1Overview .................................................................................................................19
7.2In-System Reprogrammable Flash Program Memory .............................................19
7.3SRAM Data Memory ...............................................................................................20
7.4EEPROM Data Memory ..........................................................................................22
7.5I/O Memory ..............................................................................................................23
7.6Register Description ................................................................................................24
8.1Clock Systems and their Distribution .......................................................................30
8.2Clock Sources .........................................................................................................31
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P 2
ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P 6
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