ATTINY44-15MZ Atmel, ATTINY44-15MZ Datasheet - Page 145
ATTINY44-15MZ
Manufacturer Part Number
ATTINY44-15MZ
Description
MCU AVR 4K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY44-15MZ.pdf
(225 pages)
Specifications of ATTINY44-15MZ
Package / Case
20-QFN Exposed Pad
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
12
Eeprom Size
256 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
256 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI, UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
12
Number Of Timers
2
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY44-15MZ
Manufacturer:
ATMEL
Quantity:
1 000
Part Number:
ATTINY44-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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18.7.2
18.7.3
7701E–AVR–02/11
Analog Noise Canceling Techniques
ADC Accuracy Definitions
Figure 18-8. Analog Input Circuitry
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:
An n-bit single-ended ADC converts a voltage linearly between GND and V
(LSBs). The lowest code is read as 0, and the highest code is read as 2
Several parameters describe the deviation from the ideal behavior:
• Offset Error: The deviation of the first transition (0x000 to 0x001) compared to the ideal
Figure 18-9. Offset Error
transition (at 0.5LSB). Ideal value: 0LSB.
a. Keep analog signal paths as short as possible. Make sure analog tracks run over
b. Use the ADC noise canceller function to reduce induced noise from the CPU.
c. If any port pins are used as digital outputs, it is essential that these do not switch
the analog ground plane, and keep them well away from high-speed switching digi-
tal tracks.
while a conversion is in progress.
ADCn
Output Code
Offset
Error
Atmel ATtiny24/44/84 [Preliminary]
I
IH
I
IL
1..100 k
V
REF
Input Voltage
C
S/H
= 14 pF
Ideal ADC
Actual ADC
n
-1.
V
CC
REF
/2
in 2
n
steps
145
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