
DESCRIPTION
The Accutek AK5816384 high density memory module is a CMOS
DRAMorganizedin16Megx8bitwords. Theassemblyconsistsof
eight 16 Meg x 1 DRAMs in plastic SOJ packages mounted to the
front side of a printed circuit board in 30 pad SIM (leadless) or SIP
(leaded) configuration. The module is only 0.8 inch high (same
height as standard 1 Meg modules), making it ideally suited for ap-
plications with low height restrictions.
The operation of the AK5816384 is identical to eight 16 Meg x 1
DRAMs. The data input is tied to the data output and brought out
separately for each device, with common RAS, CAS and WE con-
trol. This common I/O feature dictates the use of early-write cycles
to prevent contention of D and Q. Since the Write-Enable (WE) sig-
nalmustalwaysgolowbeforeCASinawritecycle,Read-Writeand
Read-Modify-Write operation is not possible.
FEATURES
16,777,216 x 8 bit organization
Optional 30 Pad leadless SIM (Single In-Line Module) or 30
Pin leaded SIP (Single In-Line Package)
JEDEC standard pinout
Each device (data bit) has common DQ lines with common
CAS and RAS controls
CAS-before-RAS refresh
Downward compatible with AK584096, AK581024/481024,
AK58256/48256
TTL-Compatible Inputs and Outputs
RAS-Only Refresh
4096 Cycle Refresh every 64mSEC
Power:
3.96 Watt Max Active (60 nS)
4.40 Watt Max Active (70 nS)
3.52 Watt Max Active (80 nS)
44 mWatt Max Standby
Operating free air temperature 0
o
C to 70
o
C
Fast Page Mode
9 Bit version (with parity bit) also available
Accutek
Microcircuit
Corporation
AK5816384S / AK5816384G
16,777,216 Word by 8 Bit CMOS
Dynamic Random Access Memory
1
30
1
Front View
30-Pin SIM
30-Pin SIP
PIN NOMENCLATURE
DQ
1
- DQ
8
Data In/Data Out
A
0
- A
11
Address Inputs
CAS
Column Address Strobe
RAS
Row Address Strobe
WE
Write Enable
Vcc
5v Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK5816384S
Leaded SIP: AK5816384G
PIN ASSIGNMENT
PIN #
SYMBOL
PIN #
SYMBOL
1
Vcc
16
DQ5
2
CAS
17
A8
3
DQ1
18
A9
4
A0
19
A10
5
A1
20
DQ6
6
DQ2
21
WE
7
A2
22
Vss
8
A3
23
DQ7
9
Vss
24
A11
10
DQ3
25
DQ8
11
A4
26
NC
12
A5
27
RAS
13
DQ4
28
NC
14
A6
29
NC
15
A7
30
Vcc
FUNCTIONAL DIAGRAM