ATMEGA48PA-MUR Atmel, ATMEGA48PA-MUR Datasheet - Page 322
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ATMEGA48PA-MUR
Manufacturer Part Number
ATMEGA48PA-MUR
Description
MCU AVR 4KB FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA48PA-MUR
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
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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28.4
28.4.1
Table 28-10. Calibration Accuracy of Internal RC Oscillator
28.4.2
28.4.3
Table 28-11. External Clock Drive
Note:
8271C–AVR–08/10
Factory
Calibration
User
Calibration
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
Clock Characteristics
All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcontrollers
manufactured in the same process technology. These values are preliminary values representing design targets, and will be
updated after characterization of actual silicon.
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
External Clock Drive
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from
one clock cycle to the
next
Figure 28-2. External Clock Drive Waveforms
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
7.3 - 8.1 MHz
Frequency
8.0 MHz
V
IL1
Min.
250
100
100
V
0
V
CC
IH1
= 1.8 - 5.5V
Max.
1.8V - 5.5V
2.0
2.0
4
2
V
3V
CC
Min.
100
40
40
V
0
CC
= 2.7 - 5.5V
Max.
Temperature
-40°C - 85°C
1.6
1.6
10
2
25°C
Min.
V
50
20
20
0
CC
= 4.5 - 5.5V
Calibration Accuracy
Max.
0.5
0.5
20
2
±10%
±1%
Units
MHz
ns
ns
ns
μs
μs
%
322
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