Accutek
Microcircuit
Corporation
AK62464Z
65,536 x 24 Bit CMOS/BiCMOS
Static Random Access Memory
DESCRIPTION
64-Pin ZIP
The Accutek AK62464 SRAM Module consists of fast high perfor-
mance SRAMs mounted on a low profile, 64 pin ZIP Board. The
module utilizes six 28 pin 64K x 4 SRAMs in 300 mil SOJ packages
and three decoupling capacitors mounted on the top side and two
28 pin 64K x 4 SRAMs in 300 mil SOJ packages and three decoup-
ling capacitors mounted on the bottom side of a printed circuit
board.
Front View
1
32
33
64
Rear View
The SRAMs used have common I/O functions and single output en-
able functions. Also, three separate chip select (CE) connections
are used to independently enable the three bytes. The modules can
be supplied in a variety of access time values from 8nSEC to
20nSEC in CMOS or BiCMOS technology.
64
33
32
1
The Accutek module is designed to have a maximum seated height
of 0.500 inch to provide for the lowest height off the board. The
modules conform to JEDEC - standard sizes and pin-out configura-
tions. Using two pins for module memory density identification, PD0
and PD1, minimizes interchangeability and design considerations
when changing from one module size to the other in customer appli-
cations.
· Presence Detect, PD0 and PD1 for identifying module density
· Fast Access Times range from 8 nSEC BiCMOS to 20 nSEC
CMOS
· TTL-compatible inputs and outputs
· Single 5 volt power supply - AK62464Z
· Single 3.3 volt power supply - AK62464Z/3.3
· Operating temperature range in free air, 00C to 700C
FEATURES
· 65,536 x 24 bit organization
· JEDEC Standard 64 pin ZIP format
· Power
900 mA Max Active (12 nS)
840 mA Max Active (15 nS)
780 mA Max Active (20 nS)
240 mA Max Standby (Cycling)
12 mA Max Standby (f=0MHZ)
· Common I/O, single OE functions with four separate chip
selects (CE)
· Low height 0.500 inch maximum
· Upward compatible with
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
PIN #
1
SYMBOL
Vss
PD0
PD1
DQ1
NC
PIN #
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SYMBOL
A2
PIN #
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SYMBOL
NC
PIN #
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SYMBOL
A4
A0 - A15
CE1 - CE3
DQ1 - DQ24
OE
Address Inputs
Chip Enable
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
2
A9
CE3
NC
A11
A5
3
DQ9
DQ5
DQ10
DQ6
DQ11
DQ7
DQ12
DQ8
Vss
4
NC
A12
Vcc
A13
5
OE
PD0 - PD1
Vcc
6
DQ2
NC
Vss
7
DQ13
DQ17
DQ14
DQ18
DQ15
DQ19
DQ16
DQ20
A3
A6
8
DQ3
NC
DQ21
NC
Vss
9
WE
Write Enable
No Connect
10
11
12
13
14
15
16
DQ4
NC
DQ22
NC
NC
Vcc
A0
WE
DQ23
NC
A15
MODULE OPTIONS
A7
A14
DQ24
NC
A1
CE2
CE1
Leadless ZIP:
AK62464Z
A8
A10
Vss
PD0 = Open
PD1 = Vss