Data Sheet

435
8161D–AVR–10/09
ATmega48PA/88PA/168PA/328P
33.2 28M1
2325 Orchard Parkway
S J CA9131
TITLE
DRAWING NO.
REV.
20M1, 20-pad, 4 x 4 x 0.8 mm Body, Lead Pitch 0.50 mm,
A
20M1
10/27/04
2 6 E d P d Mi L d F P k (MLF)
A 0.70 0.75 0.80
A1 – 0.01 0.05
A2 0.20 REF
b 0.18 0.23 0.30
D 4.00 BSC
D2 2.45 2.60 2.75
E 4.00 BSC
E2 2.45 2.60 2.75
e 0.50 BSC
L 0.35 0.40 0.55
SIDE VIEW
Pin 1 ID
Pin #1
Notch
(0.20 R)
BOTTOM VIEW
TOP VIE W
Note:
Reference JEDEC Standard MO-220, Fig. 1 (SAW Singulation) WGGD-5.
COMMON DIMENSIONS
(Unit of Measure = mm)
SYMBOL
MIN
NOM
MAX
NOTE
D
E
e
A2
A1
A
D2
E2
0.08
C
L
1
2
3
b
1
2
3