HX6228ASNT HONEYWELL [Honeywell Solid State Electronics Center], HX6228ASNT Datasheet - Page 10

• Manufacturer Part Number: HX6228ASNT
• Description: 128K x 8 STATIC RAM-SOI HX6228
• Manufacturer: HONEYWELL [Honeywell Solid State Electronics Center]

HX6228
PACKAGING
The 128K x 8 SOI SRAM is offered in a custom 32-lead or
40-lead Flat Pack. The package is constructed of multilayer
ceramic (Al
planes.
Ceramic chip capacitors can be mounted to the package by
the user to maximize supply noise decoupling and increase
32-LEAD FLAT PACK
F
Q
L
32-LEAD FLAT PACK PINOUT
1
2
O
A
DQ0
DQ1
DQ2
VSS
A16
A14
A12
3
NC
A7
A6
A5
A4
A3
A2
A1
A0
) and features internal power and ground
22018533-001
Lid [4]
Kovar
VIEW
TOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
E2
V
E
Cutout
View
Area
Top
Ceramic
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Body
E3
C
VDD
A15
CE
NWE
A13
A8
A9
A11
NOE
A10
NCS
DQ7
DQ6
DQ5
DQ4
DQ3
Alloy 42
Lead
(pitch)
(width)
b
e
Optional capacitors
D
in cutout
Z
S
10
board packing density. These capacitors effectively attach
to the internal package power and ground planes. This
design minimizes resistance and inductance of the bond
wire and package, both of which are critical in a transient
radiation environment. All NC (no connect) pins should be
connected to VSS to prevent charge build up in the
radiation environment.
VDD
BOTTOM
VIEW
VSS
40-LEAD FLAT PACK PINOUT
W
X
VDD
DQ0
DQ1
DQ2
VDD
Y
VSS
VSS
A16
A14
A12
NC
NC
A7
A6
A5
A4
A3
A2
A1
A0
VDD
[1] BSC - Basic lead spacing between centers
[2] Where lead is brazed to package
[3] Parts delivered with leads unformed
[4] Lid connected to VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
U
View
Top
All dimensions in inches
E2
E3
W
Q
A
C
D
E
S
U
V
X
Y
b
e
F
L
Z
0.135 ± 0.015
0.017 ± 0.002
0.004 to 0.009
0.820 ± 0.008
0.050 ± 0.005 [1]
0.600 ± 0.008
0.500 ± 0.008
0.040 ref
0.750 ± 0.005 [2]
0.295 min [3]
0.026 to 0.045
0.035 ± 0.010
0.080 ref
0.380 ref
0.050 ref
0.075 ref
0.010 ref
0.135 ref
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A15
VSS
VDD
NWE
CE
A13
A8
A9
A11
NOE
A10
NCS
DQ7
DQ6
DQ5
DQ4
DQ3
VDD
VSS
NC