ATmega640/1280/1281/2560/2561
8.4
64M2
D
Marked Pin# 1 ID
E
SEATING PLANE
C
A1
TOP VIEW
A
K
0.08
C
L
Pin #1 Corner
SIDE VIEW
D2
Pin #1
Triangle
Option A
1
2
3
COMMON DIMENSIONS
(Unit of Measure = mm)
MIN
0.80
–
MAX
1.00
0.05
0.30
9.10
7.80
9.10
NOM
0.90
0.02
0.25
9.00
7.65
9.00
NOTE
SYMBOL
E2
Option B
Option C
A
Pin #1
Chamfer
(C 0.30)
A1
b
0.18
8.90
7.50
8.90
D
D2
E
K
Pin #1
Notch
(0.20 R)
e
b
E2
e
7.50
7.65
0.50 BSC
0.40
7.80
BOTTOM VIEW
L
0.35
0.20
0.45
0.40
K
0.27
1. JEDEC Standard MO-220, (SAW Singulation) Fig. 1, VMMD.
2. Dimension and tolerance conform to ASMEY14.5M-1994.
Note:
5/25/06
DRAWING NO. REV.
64M2
TITLE
2325 Orchard Parkway
San Jose, CA 95131
64M2, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm,
7.65 mm Exposed Pad, Micro Lead Frame Package (MLF)
D
R
19
2549LS–AVR–08/07
ATMEL [ ATMEL ]
