ATMEGA644A-PU Atmel, ATMEGA644A-PU Datasheet - Page 340

IC MCU AVR 64K FLASH 40PDIP

ATMEGA644A-PU

Manufacturer Part Number
ATMEGA644A-PU
Description
IC MCU AVR 64K FLASH 40PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA644A-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
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)
1.8 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
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
JTAG, TWI, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 27-18. ADC Characteristics, Differential Channels
8272A–AVR–01/10
Symbol
Parameter
Resolution
Absolute Accuracy (Including INL,
DNL Quantization Error and Offset
Error)
Integral Non-linearity (INL)
Differential Non-linearity (DNL)
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Condition
Gain = 1x
Gain = 10x
Gain = 200x
Gain = 1x
V
ADC clock = 200 kHz
Gain = 10x
V
ADC clock = 200 kHz
Gain = 200x
V
ADC clock = 200 kHz
Gain = 1x
V
ADC clock = 200 kHz
Gain = 10x
V
ADC clock = 200 kHz
Gain = 200x
V
ADC clock = 200 kHz
Gain = 1x
V
ADC clock = 200 kHz
Gain = 10x
V
ADC clock = 200 kHz
Gain = 200x
V
ADC clock = 200 kHz
CC
CC
CC
CC
CC
CC
CC
CC
CC
=5 V, V
=5 V, V
=5 V, V
=5 V, V
=5 V, V
=5 V, V
=5 V, V
=5 V, V
=5 V, V
REF
REF
REF
REF
REF
REF
REF
REF
REF
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
Min
(1)
Typ
1.5
10
10
19
19
12
11
11
7
2
4
1
(1)
Max
(1)
Units
LSB
Bits
340

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