ATMEGA328P-20PU Atmel, ATMEGA328P-20PU Datasheet - Page 315

• Manufacturer Part Number: ATMEGA328P-20PU
• Manufacturer: Atmel

Specifications of ATMEGA328P-20PU

• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/TWI/USART
• Program Memory Type: Flash
• Program Memory Size: 32KB
• Total Internal Ram Size: 2KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 6-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 28
• Package Type: PDIP
• Lead Free Status / Rohs Status: Compliant

8025K–AVR–10/09
Figure 28-4. SPI Interface Timing Requirements (Master Mode)
Figure 28-5. SPI Interface Timing Requirements (Slave Mode)
(Data Output)
(Data Output)
(Data Input)
(Data Input)
(CPOL = 0)
(CPOL = 1)
(CPOL = 0)
(CPOL = 1)
MISO
MOSI
MOSI
MISO
SCK
SCK
SCK
SCK
SS
SS
9
13
6
4
MSB
MSB
5
MSB
MSB
14
15
7
...
...
...
...
ATmega48P/88P/168P
11
2
LSB
10
1
LSB
LSB
LSB
11
2
12
3
16
8
X
17
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