ATMEGA644P-20AU Atmel, ATMEGA644P-20AU Datasheet - Page 335
ATMEGA644P-20AU
Manufacturer Part Number
ATMEGA644P-20AU
Description
IC MCU AVR 64K FLASH 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA164P-20AU.pdf
(28 pages)
2.ATMEGA164P-20AU.pdf
(439 pages)
3.ATMEGA324P-20AU.pdf
(26 pages)
Specifications of ATMEGA644P-20AU
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
32
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K 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
44-TQFP, 44-VQFP
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
2-Wire, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
4.5 V to 5.5 V
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
A/d Inputs
8-Channel, 10-Bit
Cpu Speed
20 MIPS
Eeprom Memory
2K Bytes
Input Output
32
Interface
2-Wire/JTAG/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin TQFP
Programmable Memory
64K Bytes
Timers
2-8-bit, 1-16-bit
Voltage, Range
2.7-5.5 V
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
4KB
# I/os (max)
32
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Controller Family/series
AVR MEGA
No. Of I/o's
32
Eeprom Memory Size
2KB
Ram Memory Size
4KB
Rohs Compliant
Yes
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA644P-20AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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25.8
Table 25-11. ADC Characteristics, Single Ended Channel
Notes:
8011O–AVR–07/10
Symbol
AVCC
V
R
V
V
R
V
REF
INT1
INT2
REF
AIN
IN
ADC Characteristics
1. Values are guidelines only.
Parameter
Resolution
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
Integral Non-Linearity (INL)
Differential Non-Linearity (DNL)
Gain Error
Offset Error
Conversion Time
Clock Frequency
Analog Supply Voltage
Reference Voltage
Input Voltage
Input Bandwidth
Internal Voltage Reference
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
Condition
Single Ended Conversion
Single Ended Conversion
V
ADC clock = 200 kHz
Single Ended Conversion
V
ADC clock = 1 MHz
Single Ended Conversion
V
ADC clock = 200 kHz
Noise Reduction Mode
Single Ended Conversion
V
ADC clock = 1 MHz
Noise Reduction Mode
Single Ended Conversion
V
ADC clock = 200 kHz
Single Ended Conversion
V
ADC clock = 200 kHz
Single Ended Conversion
V
ADC clock = 200 kHz
Single Ended Conversion
V
ADC clock = 200 kHz
Free Running Conversion
Single Ended Conversion
1.1V
2.56V, V
REF
REF
REF
REF
REF
REF
REF
REF
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
CC
> 2.7V
CC
CC
CC
CC
CC
CC
CC
CC
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
V
Min
CC
GND
2.33
1.0
1.0
13
50
ATmega164P/324P/644P
- 0.3
(1)
Typ
2.75
38.5
2.56
100
3.5
3.5
1.5
0.3
2.5
2.5
1.1
10
32
3
(1)
V
CC
Max
AVCC
1000
V
2.79
260
1.2
REF
+ 0.3
(1)
Units
LSB
Bits
kHz
kHz
MΩ
kΩ
µs
V
V
335
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