Rainbow Electronics ATmega103L User Manual
Page 101
ATmega603/103
101
Table 42. Parallel Programming Characteristics
T
A
= 25
°
C ± 10%, V
CC
=5V ± 10%
Notes:
1. Use t
WLWH_CE
for Chip Erase and
t
WLWH_PFB
for Programming the Fuse Bits.
2. If t
WLWH
is held longer than
t
WLRH
, no RDY/BSY pulse will be seen.
Symbol
Parameter
Min
Typ
Max
Units
V
PP
Programming Enable Voltage
11.5
12.5
V
I
PP
Programming Enable Current
250
µ
A
t
DVXH
Data and Control Valid before XTAL1 High
67
ns
t
XHXL
XTAL1 Pulse Width High
67
ns
t
XLDX
Data and Control Hold after XTAL1 Low
67
ns
t
XLWL
XTAL1 Low to WR Low
67
ns
t
BVXH
BS1 Valid before XTAL1 High
67
ns
t
PHPL
PAGEL Pulse Width High
67
ns
t
PLBX
BS1 Hold after PAGEL Low
67
ns
t
PLWL
PAGEL Low to WR Low
67
ns
t
BVWL
BS1 Valid to WR Low
67
ns
t
RHBX
BS1 Hold after RDY/BSY High
67
ns
t
WLWH
WR Pulse Width Low
67
ns
t
WHRL
WR High to RDY/BSY Low
20
ns
t
WLRH
WR Low to RDY/BSY High
0.5
0.7
0.9
ms
t
XLOL
XTAL1 Low to OE Low
67
ns
t
OLDV
OE Low to DATA Valid
20
ns
t
OHDZ
OE High to DATA Tri-stated
20
ns
t
WLWH_CE
WR Pulse Width Low for Chip Erase
5
10
15
ms
t
WLWH_PFB
WR Pulse Width Low for Progr. the Fuse Bits
1.0
1.5
1.8
ms