ATMEGA328P-20PU Atmel, ATMEGA328P-20PU Datasheet - Page 84

• 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
• ADC1/PCINT9 – Port C, Bit 1
PC1 can also be used as ADC input Channel 1. Note that ADC input channel 1 uses analog
power.
PCINT9: Pin Change Interrupt source 9. The PC1 pin can serve as an external interrupt source.
• ADC0/PCINT8 – Port C, Bit 0
PC0 can also be used as ADC input Channel 0. Note that ADC input channel 0 uses analog
power.
PCINT8: Pin Change Interrupt source 8. The PC0 pin can serve as an external interrupt source.
Table 13-7
shown in
Table 13-7.
Note:
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
1. When enabled, the 2-wire Serial Interface enables slew-rate controls on the output pins PC4
Figure 13-5 on page
PC6/RESET/PCINT14
RSTDISBL
1
RSTDISBL
0
0
0
RSTDISBL + PCINT14 •
PCIE1
RSTDISBL
PCINT14 INPUT
RESET INPUT
and PC5. This is not shown in the figure. In addition, spike filters are connected between the
AIO outputs shown in the port figure and the digital logic of the TWI module.
and
Overriding Signals for Alternate Functions in PC6..PC4
Table 13-8
relate the alternate functions of Port C to the overriding signals
77.
PC5/SCL/ADC5/PCINT13
TWEN
PORTC5 • PUD
TWEN
SCL_OUT
TWEN
0
PCINT13 • PCIE1 + ADC5D
PCINT13 • PCIE1
PCINT13 INPUT
ADC5 INPUT / SCL INPUT
ATmega48P/88P/168P
PC4/SDA/ADC4/PCINT12
TWEN
PORTC4 • PUD
TWEN
SDA_OUT
TWEN
0
PCINT12 • PCIE1 + ADC4D
PCINT12 • PCIE1
PCINT12 INPUT
ADC4 INPUT / SDA INPUT
(1)
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