Datasheet

432
ATmega640/1280/1281/2560/2561
2549K–AVR–01/07
64M2
2325 Orchard Parkway
San Jose, CA 95131
TITLE
DRAWING NO.
R
REV.
64M2, 64-pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm,
D
64M2
5/25/06
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
NOM
MAX
NOTE
A 0.80 0.90 1.00
A1 – 0.02 0.05
b 0.18 0.25 0.30
D
D2 7.50 7.65 7.80
8.90 9.00 9.10
8.90 9.00 9.10
E
E2 7.50 7.65 7.80
e 0.50 BSC
L 0.35 0.40 0.45
TOP VIEW
SIDE VIEW
BOTTOM VIEW
D
E
Marked Pin# 1 ID
SEATING PLANE
A1
C
A
C
0.08
1
2
3
K 0.20 0.27 0.40
2. Dimension and tolerance conform to ASMEY14.5M-1994.
E2
D2
b
e
Pin #1 Corner
L
Pin #1
Triangle
Pin #1
Chamfer
(C 0.30)
Option A
Option B
Pin #1
Notch
(0.20 R)
Option C
K
K
Note:
1. JEDEC Standard MO-220, (SAW Singulation) Fig. 1, VMMD.
7.65 mm Exposed Pad, Micro Lead Frame Package (MLF)