ATMEGA328-MU Atmel, ATMEGA328-MU Datasheet - Page 327

• Manufacturer Part Number: ATMEGA328-MU
• Description: IC MCU AVR 32K FLASH 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA328-MU

• 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: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Processor Series: ATMEGA32x
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: ATMEGA328
• Supply Current (max): 0.2 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8271C–AVR–08/10
2. Required only for f
3. C
4. f
5. This requirement applies to all ATmega48A/48PA/88A/88PA/168A/168PA/328/328P 2-wire Serial Interface operation. Other
devices connected to the 2-wire Serial Bus need only obey the general f
CK
b
= capacitance of one bus line in pF.
= CPU clock frequency
Figure 28-5. Two-wire Serial Bus Timing
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
SCL
> 100 kHz.
SCL
SDA
t
SU;STA
t
HD;STA
t
t
of
LOW
t
HIGH
t
HD;DAT
t
LOW
SCL
requirement.
t
SU;DAT
t
SU;STO
t
r
t
BUF
327