ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 355

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2549K–AVR–01/07
Figure 146. Parallel Programming Timing, Reading Sequence (within the Same Page)
with Timing Requirements
Note:
Table 162. Parallel Programming Characteristics, V
XTAL1
Symbol
V
I
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DATA
PP
DVXH
XLXH
XHXL
XLDX
XLWL
XLPH
PLXH
BVPH
PHPL
PLBX
WLBX
PLWL
BVWL
WLWH
WLRL
WLRH
WLRH_CE
XLOL
BS1
XA0
XA1
PP
OE
1. The timing requirements shown in Figure 144 (i.e., t
to reading operation.
Parameter
Programming Enable Voltage
Programming Enable Current
Data and Control Valid before XTAL1 High
XTAL1 Low to XTAL1 High
XTAL1 Pulse Width High
Data and Control Hold after XTAL1 Low
XTAL1 Low to WR Low
XTAL1 Low to PAGEL high
PAGEL low to XTAL1 high
BS1 Valid before PAGEL High
PAGEL Pulse Width High
BS1 Hold after PAGEL Low
BS2/1 Hold after WR Low
PAGEL Low to WR Low
BS2/1 Valid to WR Low
WR Pulse Width Low
WR Low to RDY/BSY Low
WR Low to RDY/BSY High
WR Low to RDY/BSY High for Chip Erase
XTAL1 Low to OE Low
ADDR0 (Low Byte)
LOAD ADDRESS
(LOW BYTE)
t
XLOL
ATmega640/1280/1281/2560/2561
t
OLDV
(1)
(1)
READ DATA
(LOW BYTE)
DATA (Low Byte)
t
BVDV
(2)
CC
= 5V ± 10%
(HIGH BYTE)
READ DATA
DATA (High Byte)
DVXH
11.5
Min
200
150
150
150
150
3.7
7.5
67
67
67
67
67
67
67
0
0
0
0
, t
XHXL
t
OHDZ
Typ
, and t
LOAD ADDRESS
(LOW BYTE)
XLDX
Max
12.5
250
4.5
ADDR1 (Low Byte)
1
9
) also apply
Units
μA
ms
ms
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
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