ATMEGA328P-20PU Atmel, ATMEGA328P-20PU Datasheet - Page 317
ATMEGA328P-20PU
Manufacturer Part Number
ATMEGA328P-20PU
Description
Manufacturer
Atmel
Datasheet
1.ATMEGA328P-20PU.pdf
(419 pages)
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
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8025K–AVR–10/09
3. C
4. f
5. This requirement applies to all ATmega48P/88P/168P 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 28-6. 2-wire Serial Bus Timing
SCL
SDA
t
SU;STA
SCL
t
HD;STA
requirement.
t
t
of
LOW
t
HIGH
t
HD;DAT
t
LOW
ATmega48P/88P/168P
t
SU;DAT
t
SU;STO
t
r
t
BUF
317
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