ATMEGA328P-20PU Atmel, ATMEGA328P-20PU Datasheet - Page 320

• 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 28-7. Parallel Programming Timing, Including some General Timing Requirements
Figure 28-8. Parallel Programming Timing, Loading Sequence with Timing Requirements
Note:
Figure 28-9. Parallel Programming Timing, Reading Sequence (within the Same Page) with
Note:
XTAL1
DATA
(DATA, XA0/1, BS1, BS2)
BS1
XA0
XA1
OE
PAGEL
XTAL1
1. The timing requirements shown in
1. The timing requirements shown in
DATA
BS1
XA0
XA1
ing operation.
ing operation.
Data & Contol
Timing Requirements
RDY/BSY
ADDR0 (Low Byte)
LOAD ADDRESS
PAGEL
(LOW BYTE)
XTAL1
ADDR0 (Low Byte)
LOAD ADDRESS
(LOW BYTE)
WR
t
XLOL
t
OLDV
t
t
BVPH
DVXH
(1)
(LOW BYTE)
LOAD DATA
DATA (Low Byte)
t
t
XHXL
PHPL
DATA (Low Byte)
READ DATA
(LOW BYTE)
Figure 28-7
Figure 28-7
t
t
t
t
t
XLXH
XLDX
XLWL
PLBX
PLWL
t
BVDV
(i.e., t
(i.e., t
t
ATmega48P/88P/168P
(HIGH BYTE)
BVWL
LOAD DATA
DATA (High Byte)
DVXH
DVXH
(HIGH BYTE)
READ DATA
t
t
DATA (High Byte)
XLPH
WLWH
WLRL
LOAD DATA
, t
, t
XHXL
XHXL
, and t
, and t
t
PLXH
t
OHDZ
t
WLBX
XLDX
XLDX
LOAD ADDRESS
LOAD ADDRESS
(LOW BYTE)
(LOW BYTE)
ADDR1 (Low Byte)
) also apply to read-
) also apply to load-
ADDR1 (Low Byte)
t
WLRH
(1)
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