Parallel Programming Characteristics - Atmel ATmega48PV Manual

26.9

Parallel Programming Characteristics

8025I–AVR–02/09
Table 26-8. Parallel Programming Characteristics, V
Symbol Parameter
V Programming Enable Voltage
PP
I Programming Enable Current
PP
t Data and Control Valid before XTAL1 High
DVXH
t XTAL1 Low to XTAL1 High
XLXH
t XTAL1 Pulse Width High
XHXL
t Data and Control Hold after XTAL1 Low
XLDX
t XTAL1 Low to WR Low
XLWL
t XTAL1 Low to PAGEL high
XLPH
t PAGEL low to XTAL1 high
PLXH
t BS1 Valid before PAGEL High
BVPH
t PAGEL Pulse Width High
PHPL
t BS1 Hold after PAGEL Low
PLBX
t BS2/1 Hold after WR Low
WLBX
t PAGEL Low to WR Low
PLWL
t BS1 Valid to WR Low
BVWL
t WR Pulse Width Low
WLWH
t WR Low to RDY/BSY Low
WLRL
t WR Low to RDY/BSY High
WLRH
t WR Low to RDY/BSY High for Chip Erase
WLRH_CE
t XTAL1 Low to OE Low
XLOL
t BS1 Valid to DATA valid
BVDV
t OE Low to DATA Valid
OLDV
t OE High to DATA Tri-stated
OHDZ
Notes: 1. t is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
WLRH
commands.
2. t is valid for the Chip Erase command.
WLRH_CE
ATmega48P/88P/168P/328P
= 5V ± 10%
CC
Min
11.5
67
200
150
67
0
0
150
67
150
67
67
67
67
150
0
(1)
3.7
(2)
7.5
0
0
Typ Max Units
12.5 V
μA
250
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
1
4.5 ms
9 ms
ns
250 ns
250 ns
250 ns
326