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ATmega328P Datasheet(PDF) 313 Page - ATMEL Corporation

Part # ATmega328P
Description  8-bit Microcontroller with 32K Bytes In-System Programmable Flash
PDF  345 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega328P Datasheet(HTML) 313 Page - ATMEL Corporation

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313
7810A–AVR–11/09
ATmega328P [Preliminary]
Notes:
1.
tWLRH is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
commands.
2.
tWLRH_CE is valid for the Chip Erase command.
Figure 28-6. Parallel Programming Timing, Including some General Timing Requirements
tPHPL
PAGEL Pulse Width High
150
ns
tPLBX
BS1 Hold after PAGEL Low
67
ns
tWLBX
BS2/1 Hold after WR Low
67
ns
tPLWL
PAGEL Low to WR Low
67
ns
tBVWL
BS1 Valid to WR Low
67
ns
tWLWH
WR Pulse Width Low
150
ns
tWLRL
WR Low to RDY/BSY Low
0
1
µs
tWLRH
WR Low to RDY/BSY High
(1)
3.7
4.5
ms
tWLRH_CE
WR Low to RDY/BSY High for Chip Erase
(2)
7.5
9
ms
tXLOL
XTAL1 Low to OE Low
0
ns
tBVDV
BS1 Valid to DATA valid
0
250
ns
tOLDV
OE Low to DATA Valid
250
ns
tOHDZ
OE High to DATA Tri-stated
250
ns
Table 28-9.
Parallel Programming Characteristics, V
CC = 5V ± 10% (Continued)
Symbol
Parameter
Min
Typ
Max
Units
Data & Contol
(DATA, XA0/1, BS1, BS2)
XTAL1
t
XHXL
t
WLWH
t
DVXH
t
XLDX
t
PLWL
t
WLRH
WR
RDY/BSY
PAGEL
t
PHPL
t
PLBX
t
BVPH
t
XLWL
t
WLBX
t
BVWL
WLRL



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