atmega103 ATMEL Corporation, atmega103 Datasheet - Page 112

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atmega103

Manufacturer Part Number
atmega103
Description
Atmega103 8-bit With 128k Bytes Of In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet

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Parallel Programming
Characteristics
112
ATmega103(L)
Figure 76. Parallel Programming Timing
Table 41. Parallel Programming Characteristics T
Notes:
(DATA, XA0/1, BS1)
Symbol
V
I
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PP
DVXH
XHXL
XLDX
XLWL
BVXH
PHPL
PLBX
PLWL
BVWL
RHBX
WLWH
WHRL
WLRH
XLOL
OLDV
OHDZ
WLWH_CE
WLWH_PFB
PP
Data & Contol
1. Use t
2. If t
RDY/BSY
PAGEL
XTAL1
DATA
WLWH
WR
Parameter
Programming Enable Voltage
Programming Enable Current
Data and Control Valid before XTAL1 High
XTAL1 Pulse Width High
Data and Control Hold after XTAL1 Low
XTAL1 Low to WR Low
BS1 Valid before XTAL1 High
PAGEL Pulse Width High
BS1 Hold after PAGEL Low
PAGEL Low to WR Low
BS1 Valid to WR Low
BS1 Hold after RDY/BSY High
WR Pulse Width Low
WR High to RDY/BSY Low
WR Low to RDY/BSY High
XTAL1 Low to OE Low
OE Low to DATA Valid
OE High to DATA Tri-stated
WR Pulse Width Low for Chip Erase
WR Pulse Width Low for Progr. the Fuse Bits
OE
WLWH_CE
is held longer than t
t
t
BVXH
DVXH
for Chip Erase and t
t
t
XHXL
PHPL
(1)
t
t
t
t
t
XLOL
XLWL
XLDX
PLBX
PLWL
WLRH
(2)
(2)
t
, no RDY/BSY pulse will be seen.
BVWL
WLWH_PFB
t
WLWH
A
t
OLDV
= 25°C ± 10%, V
for programming the fuse bits.
t
WHRL
11.5
Min
0.5
1.0
67
67
67
67
67
67
67
67
67
67
67
67
5
Typ
0.7
1.5
20
20
10
CC
= 5V ± 10%
t
t
WLRH
OHDZ
t
RHBX
Max
12.5
250
0.9
1.8
20
15
0945I–AVR–02/07
Units
µA
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V

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