AK5816384S Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – 16,777,216 Word by 8 Bit CMOS Dynamic Random Access Memory

Accutek
Microcircuit
Corporation
DESCRIPTION
The Accutek AK5816384 high density memory module is a CMOS
DRAM organized in 16 Meg x 8 bit words. The assembly consists of
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-
nal must always go low before CAS in a write cycle, Read-Write and
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
AK5816384S / AK5816384G
16,777,216 Word by 8 Bit CMOS
Dynamic Random Access Memory
Front View
30-Pin SIM
1
30
30-Pin SIP
1
· 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^oC to 70^oC
· Fast Page Mode
· 9 Bit version (with parity bit) also available
PIN NOMENCLATURE
PIN ASSIGNMENT
FUNCTIONAL DIAGRAM
DQ1 - DQ8
A0 - A11
CAS
Data In/Data Out
PIN #
1
Address Inputs
2
Column Address Strobe
3
RAS
WE
Vcc
Row Address Strobe
4
5
Write Enable
6
5v Supply
7
Vss
Ground
8
9
NC
No Connect
10
11
MODULE OPTIONS
12
13
Leadless SIM: AK5816384S
14
Leaded SIP: AK5816384G
15
SYMBOL
Vcc
CAS
DQ1
A0
A1
DQ2
A2
A3
Vss
DQ3
A4
A5
DQ4
A6
A7
PIN #
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
SYMBOL
DQ5
A8
A9
A10
DQ6
WE
Vss
DQ7
A11
DQ8
NC
RAS
NC
NC
Vcc