7.4 20M2
D
Pin 1 ID
E
ATtiny2313A/4313
C
y
SIDE VIEW
TOP VIEW
D2
16 17 18 19 20
15
14
E2 13
12
11
Pin #1 Chamfer
(C 0.3)
10 9 8 7 6
L
K
BOTTOM VIEW
A1
A
C0.18 (8X)
1
2
e
3
4
5
b
0.3 Ref (4x)
SYMBOL
A
A1
b
C
D
D2
E
E2
e
L
K
y
COMMON DIMENSIONS
(Unit of Measure = mm)
MIN
0.75
0.00
0.17
2.90
1.40
2.90
1.40
–
0.35
0.20
0.00
NOM
0.80
0.02
0.22
0.152
3.00
1.55
3.00
1.55
0.45
0.40
–
–
MAX
0.85
0.05
0.27
3.10
1.70
3.10
1.70
–
0.45
–
0.08
NOTE
Package Drawing Contact:
packagedrawings@atmel.com
TITLE
20M2, 20-pad, 3 x 3 x 0.85 mm Body, Lead Pitch 0.45 mm,
1.55 x 1.55 mm Exposed Pad, Thermally Enhanced
Plastic Very Thin Quad Flat No Lead Package (VQFN)
GPC
ZFC
10/24/08
DRAWING NO. REV.
20M2
B
17
8246BS–AVR–09/11