Datasheet

306
8011O–AVR–07/10
ATmega164P/324P/644P
24.7.15 Parallel Programming Characteristics
Notes: 1. t
WLRH
is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
commands.
2. t
WLRH_CE
is valid for the Chip Erase command.
Table 24-14. 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 μA
t
DVXH
Data and Control Valid before XTAL1 High 67
ns
t
XLXH
XTAL1 Low to XTAL1 High 200
t
XHXL
XTAL1 Pulse Width High 150
t
XLDX
Data and Control Hold after XTAL1 Low 67
t
XLWL
XTAL1 Low to WR Low 0
t
XLPH
XTAL1 Low to PAGEL high 0
t
PLXH
PAGEL low to XTAL1 high 150
t
BVPH
BS1 Valid before PAGEL High 67
t
PHPL
PAGEL Pulse Width High 150
t
PLBX
BS1 Hold after PAGEL Low 67
t
WLBX
BS2/1 Hold after WR Low 67
t
PLWL
PAGEL Low to WR Low 67
t
BVWL
BS2/1 Valid to WR Low 67
t
WLWH
WR Pulse Width Low 150
t
WLRL
WR Low to RDY/BSY Low 0 1 μs
t
WLRH
WR Low to RDY/BSY High
(1)
3.7 4.5
ms
t
WLRH_CE
WR Low to RDY/BSY High for Chip Erase
(2)
7.5 9
t
XLOL
XTAL1 Low to OE Low 0
ns
t
BVDV
BS1 Valid to DATA valid 0 250
t
OLDV
OE Low to DATA Valid 250
t
OHDZ
OE High to DATA Tri-stated 250