3 44m1 – Atmel ATmega324PA User Manual
Page 23
23
8152GS–AVR–11/09
ATmega164PA/324PA/644PA/1284P
9.3
44M1
TITLE
DRAWING NO.
GPC
REV.
Package Drawing Contact:
[email protected]
44M1
ZWS
H
44M1, 44-pad, 7 x 7 x 1.0 mm Body, Lead
Pitch 0.50 mm, 5.20 mm Exposed Pad, Thermally
Enhanced Plastic Very Thin Quad Flat No
Lead Package (VQFN)
9/26/08
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
NOM
MAX
NOTE
A
0.80
0.90
1.00
A1
–
0.02
0.05
A3
0.20 REF
b
0.18
0.23
0.30
D
D2
5.00
5.20
5.40
6.90
7.00
7.10
6.90
7.00
7.10
E
E2
5.00
5.20
5.40
e
0.50 BSC
L
0.59
0.64
0.69
K
0.20
0.26
0.41
Note: JEDEC Standard MO-220, Fig. 1 (SAW Singulation) VKKD-3.
TOP VIEW
SIDE VIEW
BOTTOM VIEW
D
E
Marked Pin# 1 ID
E2
D2
b
e
Pin #1 Corner
L
A1
A3
A
SEATING PLANE
Pin #1
Triangle
Pin #1
Chamfer
(C 0.30)
Option A
Option B
Pin #1
Notch
(0.20 R)
Option C
K
K
1
2
3