ATMEGA48A-PU Atmel, ATMEGA48A-PU Datasheet - Page 462

IC MCU AVR 4K FLASH 28PDIP

ATMEGA48A-PU

Manufacturer Part Number
ATMEGA48A-PU
Description
IC MCU AVR 4K FLASH 28PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA48A-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
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 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
256Byte
Ram Memory Size
512Byte
Cpu Speed
20MHz
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA48A-PU
Manufacturer:
Microchip Technology
Quantity:
1 051
29.6.3
29.6.3.1
8271C–AVR–08/10
ATmega168PA Supply Current of IO Modules
Example
The tables and formulas below can be used to calculate the additional current consumption for
the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules
are controlled by the Power Reduction Register. See
details.
Table 29-11. ATmega168PA: Additional Current Consumption for the different I/O modules
Table 29-12. ATmega168PA: Additional Current Consumption (percentage) in Active and Idle
It is possible to calculate the typical current consumption based on the numbers from
12 on page 462
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 10.3% for the TIMER1, 20.3% for the ADC, and 17.1% for the SPI module. Reading from
Figure 29-241 on page
2.0V and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI
enabled, gives:
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
I
CC
CC
total
= 2.0V and F = 1MHz. From
0.027 mA (1 + 0.103 + 0.203 + 0.171)
(absolute values)
mode
for other V
Typical numbers
2.86 uA
6.00 uA
4.97 uA
3.50 uA
Additional Current consumption
compared to Active with external
clock (see
456
457)
1.5%
3.2%
2.4%
1.7%
0.7%
2.9%
3.4%
1.43 uA
6.34 uA
5.01 uA
V
CC
and
= 2V, F = 1 MHz
459, we find that the idle current consumption is ~0.027 mA at V
Figure 29-237 on page
CC
Figure 29-236 on page
and frequency settings than listed in
Table 29-12 on page
20.3 uA
44.1uA
33.2 uA
23.0 uA
9.2 uA
38.6 uA
45.7 uA
V
0.040 mA
CC
= 3V, F = 4 MHz
”Power Reduction Register” on page 42
Additional Current consumption
compared to Idle with external
clock (see
459
459)
8.9%
19.5%
14.8%
10.3%
4.1%
17.1%
20.3%
462, third column, we see that we need
and
Figure 29-242 on page
Figure 29-241 on page
52.2 uA
122.0 uA
79.8 uA
55.3 uA
21.4 uA
111.4 uA
123.6 uA
V
Table 29-11 on page
CC
= 5V, F = 8 MHz
Table 29-
462.
CC
462
for
=

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