AT28C256
29.7 28T – TSOP
PIN 1
0º ~ 5º
c
Pin 1 Identifier Area
D1
D
L
b
L1
e
A2
E
GAGE PLANE
A
SEATING PLANE
COMMON DIMENSIONS
(Unit of Measure = mm)
A1
MIN
–
MAX
1.20
0.15
1.05
13.60
NOM
–
NOTE
SYMBOL
A
A1
A2
D
0.05
0.90
13.20
11.70
7.90
0.50
–
1.00
Notes:
1. This package conforms to JEDEC reference MO-183.
2. Dimensions D1 and E do not include mold protrusion. Allowable
protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side.
3. Lead coplanarity is 0.10 mm maximum.
13.40
11.80
8.00
D1
E
11.90 Note 2
8.10
0.70
Note 2
L
0.60
L1
b
0.25 BASIC
0.22
0.17
0.10
0.27
0.21
c
–
e
0.55 BASIC
12/06/02
DRAWING NO. REV.
28T
TITLE
2325 Orchard Parkway
San Jose, CA 95131
28T, 28-lead (8 x 13.4 mm) Plastic Thin Small Outline
Package, Type I (TSOP)
C
R
23
0006M–PEEPR–12/09
ATMEL [ ATMEL ]
