AK62464Z_09 Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – Static Random Access Memory

ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
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.
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.
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 mod-
ules conform to JEDEC - standard sizes and pin-out configurations.
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 applica-
tions.
FEATURES
· 65,536 x 24 bit organization
· JEDEC Standard 64 pin ZIP format
· Common I/O, single OE functions with four separate chip
selects (CE)
· Low height 0.500 inch maximum
· Upward compatible with
AK62464Z
65,536 x 24 Bit CMOS/BiCMOS
Static Random Access Memory
64-Pin ZIP
Front View
1
32 33
64
Rear View
64
33 32
1
· 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
· 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)
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
A0 - A15
CE1 - CE3
DQ1 - DQ24
OE
PD0 - PD1
Vcc
Vss
WE
NC
Address Inputs
Chip Enable
Data In/Data Out
Output Enable
Presence Detect
Power Supply
Ground
Write Enable
No Connect
MODULE OPTIONS
Leadless ZIP: AK62464Z
PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL
1
Vss 17
A2
33 NC 49
A4
2 PD0 18 A9 34 CE3 50 A11
3 PD1 19 DQ9 35 NC 51 A5
4 DQ1 20 DQ5 36 NC 52 A12
5
NC 21 DQ10 37 OE 53 Vcc
6 DQ2 22 DQ6 38 Vss 54 A13
7
NC 23 DQ11 39 DQ13 55 A6
8 DQ3 24 DQ7 40 DQ17 56 DQ21
9
NC 25 DQ12 41 DQ14 57 NC
10 DQ4 26 DQ8 42 DQ18 58 DQ22
11 NC 27 Vss 43 DQ15 59 NC
12 Vcc 28 WE 44 DQ19 60 DQ23
13 A0 29 A15 45 DQ16 61 NC
14 A7 30 A14 46 DQ20 62 DQ24
15 A1 31 CE2 47 A3 63 NC
16 A8 32 CE1 48 A10 64 Vss
PD0 = Open
PD1 = Vss