ATMEGA165-16AI Atmel, ATMEGA165-16AI Datasheet - Page 197

• Manufacturer Part Number: ATMEGA165-16AI
• Description: IC AVR MCU 16K 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA165-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Analog Noise Canceling
Techniques
2573G–AVR–07/09
Digital circuitry inside and outside the device generates EMI which might affect the
accuracy of analog measurements. If conversion accuracy is critical, the noise level can
be reduced by applying the following techniques:
Figure 91. ADC Power Connections
1.Keep analog signal paths as short as possible. Make sure analog tracks run
2.The AVCC pin on the device should be connected to the digital V
3.Use the ADC noise canceler function to reduce induced noise from the CPU.
4.If any ADC port pins are used as digital outputs, it is essential that these do not
over the analog ground plane, and keep them well away from high-speed
switching digital tracks.
age via an LC network as shown in Figure 91.
switch while a conversion is in progress.
Analog Ground Plane
100nF
(ADC7) PF7
(ADC6) PF6
(ADC5) PF5
(ADC4) PF4
(ADC3) PF3
(ADC2) PF2
(ADC1) PF1
(ADC0) PF0
AREF
AVCC
GND
GND
VCC
PA0
51
52
53
54
55
56
57
58
59
60
61
61
62
62
63
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64
64
1
ATmega165/V
CC
supply volt-
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