ATMEGA644-20PU Atmel, ATMEGA644-20PU Datasheet - Page 10
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ATMEGA644-20PU
Manufacturer Part Number
ATMEGA644-20PU
Description
IC AVR MCU FLASH 64K 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644-20PU
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
40-DIP (0.600", 15.24mm)
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
2-Wire/SPI/USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
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, ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN, ATAVRRZUSBSTICK, ATAVRRZ201
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Controller Family/series
AVR MEGA
No. Of I/o's
32
Eeprom Memory Size
2KB
Ram Memory Size
4KB
Cpu Speed
20MHz
No. Of Timers
3
Rohs Compliant
Yes
Package
40PDIP
Device Core
AVR
Family Name
ATmega
Maximum Speed
20 MHz
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA644-20PU
Manufacturer:
Atmel
Quantity:
1 930
2593NS–AVR–07/10
0x3E (0x5E)
0x3D (0x5D)
0x3C (0x5C)
0x3B (0x5B)
0x3A (0x5A)
0x2E (0x4E)
0x2D (0x4D)
0x2C (0x4C)
0x2B (0x4B)
0x2A (0x4A)
0x1E (0x3E)
0x1D (0x3D)
0x1C (0x3C)
0x3F (0x5F)
0x39 (0x59)
0x38 (0x58)
0x37 (0x57)
0x36 (0x56)
0x35 (0x55)
0x34 (0x54)
0x33 (0x53)
0x32 (0x52)
0x31 (0x51)
0x30 (0x50)
0x2F (0x4F)
0x29 (0x49)
0x28 (0x48)
0x27 (0x47)
0x26 (0x46)
0x25 (0x45)
0x24 (0x44)
0x23 (0x43)
0x22 (0x42)
0x21 (0x41)
0x20 (0x40)
0x1F (0x3F)
Address
(0x7D)
(0x7C)
(0x7B)
(0x7A)
(0x6E)
(0x6D)
(0x6C)
(0x6B)
(0x6A)
(0x79)
(0x78)
(0x77)
(0x76)
(0x75)
(0x74)
(0x73)
(0x72)
(0x71)
(0x70)
(0x6F)
(0x69)
(0x68)
(0x67)
(0x66)
(0x65)
(0x64)
(0x63)
(0x62)
(0x61)
(0x60)
Reserved
ADMUX
ADCSRB
ADCSRA
ADCH
ADCL
Reserved
Reserved
Reserved
Reserved
PCMSK3
Reserved
Reserved
TIMSK2
TIMSK1
TIMSK0
PCMSK2
PCMSK1
PCMSK0
Reserved
EICRA
PCICR
Reserved
OSCCAL
Reserved
PRR
Reserved
Reserved
CLKPR
WDTCSR
SREG
SPH
SPL
Reserved
Reserved
Reserved
Reserved
Reserved
SPMCSR
Reserved
MCUCR
MCUSR
SMCR
Reserved
OCDR
ACSR
Reserved
SPDR
SPSR
SPCR
GPIOR2
GPIOR1
Reserved
OCR0B
OCR0A
TCNT0
TCCR0B
TCCR0A
GTCCR
EEARH
EEARL
EEDR
EECR
GPIOR0
EIMSK
EIFR
Name
PCINT31
PCINT23
PCINT15
COM0A1
CLKPCE
PCINT7
FOC0A
REFS1
PRTWI
SPMIE
ADEN
Bit 7
WDIF
SP15
SPIE
ACD
SPIF
TSM
SP7
JTD
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
I
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCINT30
PCINT22
PCINT14
COM0A0
RWWSB
PRTIM2
PCINT6
FOC0B
REFS0
ACME
WCOL
ADSC
ACBG
Bit 6
WDIE
SP14
SP6
SPE
T
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCINT29
PCINT21
PCINT13
COM0B1
PRTIM0
PCINT5
ADLAR
ADATE
EEPM1
SIGRD
WDP3
DORD
ISC21
Bit 5
ICIE1
SP13
ACO
SP5
H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Timer/Counter0 Output Compare Register B
Timer/Counter0 Output Compare Register A
EEPROM Address Register Low Byte
General Purpose I/O Register 2
General Purpose I/O Register 1
General Purpose I/O Register 0
Oscillator Calibration Register
RWWSRE
ADC Data Register High byte
ADC Data Register Low byte
PCINT28
PCINT20
PCINT12
COM0B0
PCINT4
EEPM0
WDCE
ISC20
MSTR
MUX4
Bit 4
SP12
JTRF
ADIF
On-Chip Debug Register
EEPROM Data Register
PUD
SP4
ACI
Timer/Counter0 (8 Bit)
S
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SPI 0 Data Register
PCINT27
PCINT19
PCINT11
CLKPS3
BLBSET
PRTIM1
WGM02
PCINT3
WDRF
EERIE
MUX3
ISC11
PCIE3
CPOL
Bit 3
SP11
ADIE
WDE
ACIE
SM2
SP3
V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EEPROM Address Register High Byte
PCINT26
PCINT18
PCINT10
CLKPS2
OCIE2B
OCIE1B
OCIE0B
PCINT2
PGWRT
EEMPE
ADTS2
ADPS2
PRSPI
MUX2
ISC10
PCIE2
WDP2
BORF
CPHA
INTF2
Bit 2
SP10
ACIC
CS02
INT2
SM1
SP2
N
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PRUSART0
PCINT25
PCINT17
PSRASY
CLKPS1
OCIE2A
OCIE1A
OCIE0A
WGM01
PCINT9
PCINT1
PGERS
ADTS1
ADPS1
EXTRF
PCIE1
WDP1
IVSEL
ACIS1
MUX1
ISC01
SPR1
EEPE
INTF1
Bit 1
CS01
SM0
INT1
SP9
SP1
Z
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PSRSYNC
PCINT24
PCINT16
CLKPS0
WGM00
PCINT8
PCINT0
PRADC
SPMEN
ADPS0
ADTS0
TOIE2
TOIE1
TOIE0
PCIE0
WDP0
ACIS0
MUX0
ISC00
PORF
SPI2X
EERE
INTF0
Bit 0
SPR0
CS00
IVCE
INT0
SP8
SP0
ATmega644
SE
C
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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