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AK5916384S Datasheet(数据表) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION

部件型号  AK5916384S
说明  Dynamic Random Access Memory
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制造商  ACCUTEK [ACCUTEK MICROCIRCUIT CORPORATION]
网页  http://www.accutekmicro.com
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AK5916384S Datasheet(HTML) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION

   
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DESCRIPTION
The Accutek AK5916384S high density memory module is a CMOS
random access memory organized in 16 Meg x 9 bit words. The as-
sembly consists of nine 16 Meg x 1 DRAMs in plastic SOJ packages
mounted on the front side of a printed circuit board in 30 pad SIM
(leadless) or 30 pin SIP (leaded) configuration. The module is only
0.8 inch high (same height as standard 1 Meg modules), making it
ideally suited for applications with low height restrictions.
The operation of the AK5916384 is identical to nine 16 Meg x 1
dynamic RAMs. For the lower eight bits data input is tied to data
output and brought out separately for each device, with common
RAS,CAS and WE control. This common I/O feature dictates the
use of early-write cycles to prevent contention of D and Q. Since
the Write-Enable (WE) signal must always go low before CAS in a
write cycle, Read-Write and Read-Modify-Write operation is not
possible. For the ninth bit, the data input (D9) and the data output
(Q9) pins are brought out separately and controlled by a separate
PCAS for that bit. Bit nine is generally used for parity.
FEATURES
· 16,777,216 x 9 bit organization
· Optional 30 Pad leadless SIM (Single In-Line Module) or 30
Pin leaded SIP (Single In-Line Package)
· JEDEC standard pinout
· Common CAS and RAS control for the lower eight bits
· Separate PCAS control for D9 and Q9
· CAS-before-RAS refresh
· Downward compatible with AK594096, AK591024, and
AK59256
· TTL-Compatible Inputs and Outputs
· RAS-Only Refresh
· 4096 Cycle Refresh every 64mSEC
· Power:
4.45 Watt Max Active (60 nS)
3.96 Watt Max Active (70 nS)
49.5 mWatt Max Standby
· Operating free air temperature 0oCto70oC
· Fast Page Mode
· 8 Bit version (without parity bit) also available
ACCUTEK
MICROCIRCUIT CORPORATION
AK5916384S / AK5916384G
16,777,216 Word by 9 Bit CMOS
Dynamic Random Access Memory
1
30
1
Front View
30-Pin SIM
30-Pin SIP
PIN NOMENCLATURE
DQ1 -DQ8
Data In/Data Out
D9
Data In
Q9
Data Out
A0 -A11
Address Inputs
CAS, PCAS
Column Address Strobe
RAS
Row Address Strobe
WE
Write Enable
Vcc
5v Supply
Vss
Ground
NC
No Connect
MODULE OPTIONS
Leadless SIM: AK5916384S
Leaded SIP: AK5916384G
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
Q9
12
A5
27
RAS
13
DQ4
28
PCAS
14
A6
29
D9
15
A7
30
Vcc
FUNCTIONAL DIAGRAM




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