ATmega48PA Automotive Atmel Corporation, ATmega48PA Automotive Datasheet - Page 323
ATmega48PA Automotive
Manufacturer Part Number
ATmega48PA Automotive
Description
Manufacturer
Atmel Corporation
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29.9
Figure 29-6. Parallel Programming Timing, Including some General Timing Requirements
9223B–AVR–09/11
Parallel Programming Characteristics
(DATA, XA0/1, BS1, BS2)
Data & Contol
RDY/BSY
PAGEL
Table 29-10. 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
t
t
t
Notes:
PP
DVXH
XLXH
XHXL
XLDX
XLWL
XLPH
PLXH
BVPH
PHPL
PLBX
WLBX
PLWL
BVWL
WLWH
WLRL
WLRH
WLRH_CE
XLOL
BVDV
OLDV
OHDZ
PP
WR
Atmel ATmega48PA/88PA/168PA [Preliminary]
1. t
2. t
commands.
WLRH
WLRH_CE
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
BS1 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
BS1 Valid to DATA valid
OE Low to DATA Valid
OE High to DATA Tri-stated
t
t
BVPH
DVXH
is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
is valid for the Chip Erase command.
t
t
XHXL
PHPL
t
t
t
t
XLDX
PLBX
XLWL
PLWL
(1)
t
BVWL
t
WLWH
WLRL
(2)
CC
Min.
11.5
200
150
150
150
150
= 5V ±10%
3.7
7.5
67
67
67
67
67
67
67
0
0
0
0
0
t
WLBX
Typ
t
WLRH
Max
12.5
250
250
250
250
4.5
1
9
Units
µA
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
V
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