Datasheet

Mechanical Specifications
Data Sheet MC68HC908LJ24/LK24 — Rev. 2.1
452 Mechanical Specifications Freescale Semiconductor
25.3 64-Pin Low-Profile Quad Flat Pack (LQFP)
Figure 25-1. 64-Pin Low-Profile Quad Flat Pack (Case No. 840F)
AB
AB
e/2
e60X
X=A, B OR D
C
L
VIEW Y
S
0.05
θ 1
(θ2)
0.25
GAGE PLANE
SEATING
PLANE
A2
(S)
R1
2X R
(L)
(L2)
L
A1
VIEW AA
b1
SECTION AB–AB
b
c1
c
PLATING
BASE METAL
ROTATED 90° CLOCKWISE
64
0.2 H A–B D
1
49
48
17
16
32
33
E/2
E
E1
D1
D/2
D
D1/2
3X
VIEW Y
A
4X
VIEW AA
0.08 C
(θ3)4X
4X 4X 16 TIPS
0.2 C A–B D
E1/2
B
A
D
C
H
X
DIM MIN MAX
MILLIMETERS
A
—
1.60
A1 0.05 0.15
A2 1.35 1.45
b 0.17 0.27
b1 0.17 0.23
c 0.09 0.20
c1 0.09 0.16
D 12.00 BSC
D1 10.00 BSC
e
0.50 BSC
E 12.00 BSC
E1 10.00 BSC
L
0.45 0.75
L1 1.00 REF
L2 0.50 REF
R1
0.10 0.20
S 0.20 REF
0
° 7 °
0 °
—
12 ° REF
12
° REF
NOTES:
θ 1
θ 2
θ 3
θ
θ
A–B
M
0.08 DC
1. ALL DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DATUM PLANE H IS COINCIDENT WITH THE
BOTTOM OF THE LEAD WHERE THE LEAD EXITS
THE PLASTIC BODY AT THE BOTTOM OF THE
PARTING LINE.
4. DATUMS A, B AND D TO BE DETERMINED AT
DATUM PLANE H.
5. DIMENSIONS D AND E TO BE DETERMINED AT
SEATING PLANE C.
6. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE PROTRUSION IS 0.25
PER SIDE. DIMENSIONS D1 AND E1 DO INCLUDE
MOLD MISMATCH AND ARE DETERMINED AT
DATUM PLANE H.
7. DIMENSION b DOES NOT INCLUDE DAMBAR
PROTRUSION. THE DAMBAR PROTRUSION
SHALL NOT CAUSE THE b DIMENSION TO
EXCEED 0.35. MINIMUM SPACE BETWEEN
PROTRUSION AND ADJACENT LEAD OR
PROTRUSION 0.07.