Datasheet

348
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
Figure 30-8. Parallel Programming Timing, Loading Sequence with Timing Requirements
(1)
Note: 1. The timing requirements shown in Figure 30-7 on page 347 (that is, t
DVXH
, t
XHXL
, and t
XLDX
)
also apply to loading operation.
Figure 30-9. Parallel Programming Timing, Reading Sequence (within the Same Page) with
Timing Requirements
(1)
Note: 1. The timing requirements shown in Figure 30-7 on page 347 (that is, t
DVXH
, t
XHXL
, and t
XLDX
)
also apply to reading operation.
Table 30-14. Parallel Programming Characteristics, V
CC
= 5V ±10%
Symbol Parameter Min Typ Max Units
V
PP
Programming Enable Voltage 11.5 12.5 V
I
PP
Programming Enable Current 250 A
XTAL1
PAGEL
t
PLXH
XLXH
t
t
XLPH
ADDR0 (Low Byte) DATA (Low Byte) DATA (High Byte) ADDR1 (Low Byte)
DATA
BS1
XA0
XA1
LOAD ADDRESS
(LOW BYTE)
LOAD DATA
(LOW BYTE)
LOAD DATA
(HIGH BYTE)
LOAD DATA
LOAD ADDRESS
(LOW BYTE)
XTAL1
OE
ADDR0 (Low Byte) DATA (Low Byte)
DATA (High Byte)
ADDR1 (Low Byte)
DATA
BS1
XA0
XA1
LOAD ADDRESS
(LOW BYTE)
READ DATA
(LOW BYTE)
READ DATA
(HIGH BYTE)
LOAD ADDRESS
(LOW BYTE)
t
BVDV
t
OLDV
t
XLOL
t
OHDZ