ATMEGA325P-20MU Atmel, ATMEGA325P-20MU Datasheet - Page 318

• Manufacturer Part Number: ATMEGA325P-20MU
• Description: IC MCU AVR 32K FLASH 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA325P-20MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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-MLF®, 64-QFN
• Processor Series: ATMEGA32x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SPI, UART, USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 3
• 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
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATMEGA325P-16MU; ATMEGA325P-16MU

27.3
8023F–AVR–07/09
Supply Current of I/O modules
Figure 27-8. Idle Supply Current vs. V
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
page 44
Table 27-1.
Table 27-2.
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
for details.
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.5
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
19 µA
9 µA
11 µA
5 µA
Additional Current consumption
compared to Active with external
clock
(see
2
V
CC
Figure 27-1
= 2V, F = 1MHz
2.5
IDLE SUPPLY CURRENT vs. V
INTERNAL RC OSCILLATOR, 1 MHz
4.2%
2.3%
2.7%
1.2%
and
3
Figure
CC
(Internal RC Oscillator, 1 MHz)
V
102 µA
57 µA
68 µA
30 µA
CC
3.5
27-2)
(V)
V
Typical numbers
CC
= 3V, F = 4MHz
4
”PRR – Power Reduction Register” on
ATmega325P/3250P
Additional Current consumption
compared to Idle with external clock
(see
CC
4.5
Figure 27-5
5
395 µA
240 µA
276 µA
116 µA
V
9.0%
4.9%
5.9%
2.6%
and
CC
= 5V, F = 8MHz
Figure
5.5
-40 °C
85 °C
25 °C
27-6)
318