IC AVR MCU 4K 10MHZ 1.8V 32-QFN

ATMEGA48V-10MU

Manufacturer Part NumberATMEGA48V-10MU
DescriptionIC AVR MCU 4K 10MHZ 1.8V 32-QFN
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA48V-10MU datasheets
 


Specifications of ATMEGA48V-10MU

Core ProcessorAVRCore Size8-Bit
Speed10MHzConnectivityI²C, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDTNumber Of I /o23
Program Memory Size4KB (2K x 16)Program Memory TypeFLASH
Eeprom Size256 x 8Ram Size512 x 8
Voltage - Supply (vcc/vdd)1.8 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFNPackage32MLF EP
Device CoreAVRFamily NameATmega
Maximum Speed10 MHzOperating Supply Voltage2.5|3.3|5 V
Data Bus Width8 BitNumber Of Programmable I/os23
Interface TypeSPI/TWI/USARTOn-chip Adc8-chx10-bit
Number Of Timers3Processor SeriesATMEGA48x
CoreAVR8Data Ram Size512 B
Maximum Clock Frequency10 MHzMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT3rd Party Development ToolsEWAVR, EWAVR-BL
Minimum Operating Temperature- 40 CController Family/seriesAVR MEGA
No. Of I/o's23Eeprom Memory Size256Byte
Ram Memory Size512ByteCpu Speed10MHz
No. Of Timers3Rohs CompliantYes
For Use WithATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMLead Free Status / RoHS StatusLead free / RoHS Compliant
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Page 250/378

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23.6.1
Analog Input Circuitry
The analog input circuitry for single ended channels is illustrated in Figure 23-8. An analog
source applied to ADCn is subjected to the pin capacitance and input leakage of that pin, regard-
less of whether that channel is selected as input for the ADC. When the channel is selected, the
source must drive the S/H capacitor through the series resistance (combined resistance in the
input path).
The ADC is optimized for analog signals with an output impedance of approximately 10 kΩ or
less. If such a source is used, the sampling time will be negligible. If a source with higher imped-
ance is used, the sampling time will depend on how long time the source needs to charge the
S/H capacitor, with can vary widely. The user is recommended to only use low impedance
sources with slowly varying signals, since this minimizes the required charge transfer to the S/H
capacitor.
Signal components higher than the Nyquist frequency (f
kind of channels, to avoid distortion from unpredictable signal convolution. The user is advised
to remove high frequency components with a low-pass filter before applying the signals as
inputs to the ADC.
Figure 23-8. Analog Input Circuitry
23.6.2
Analog Noise Canceling Techniques
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:
a. Keep analog signal paths as short as possible. Make sure analog tracks run over the
b. The AV
c. Use the ADC noise canceler function to reduce induced noise from the CPU.
d. If any ADC [3..0] port pins are used as digital outputs, it is essential that these do not
ATmega48/88/168
250
I
IH
ADCn
I
IL
analog ground plane, and keep them well away from high-speed switching digital
tracks.
pin on the device should be connected to the digital V
CC
an LC network as shown in
Figure
switch while a conversion is in progress. However, using the 2-wire Interface (ADC4
/2) should not be present for either
ADC
1..100 kOhm
C
= 14 pF
S/H
supply voltage via
CC
23-9.
V
/2
CC
2545S–AVR–07/10