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PDF MSM6684B Data sheet ( Hoja de datos )

Número de pieza MSM6684B
Descripción 8388608-Word x 1-Bit Serial Register
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No Preview Available ! MSM6684B Hoja de datos, Descripción, Manual

E2D0035-39-21
¡¡SemicondSucetormiconductor
MSM6684B
4,194,304-word x 1-bit Serial Register
This version: MFSebM. 61699894B
Previous version: May. 1997
GENERAL DESCRIPTION
MSM6684B is a serial register organized as 4,194,304 words x one bit, characterized by medium-
speed, low power consumption operation.
This device has a built-in internal address generation circuit allowing continuous serial read/write
operation by external clock input.
Read/write operation causes the internal address to be incremented automatically by +1.
External address input enables addressing in units of 1024 words. Furthermore, a refresh timer and
a refresh address counter are installed, which makes an external refresh circuit unnecessary. In
addition, this configuration allows lower power consumption.
The device is packaged in 26/20-pin SOJ having a width of 300 mil.
It is well adapted for storing much data by means of a battery backup. Its combination with our
recording and playback LSI enables the easy implementation of a solid recording and playback
system.
FEATURES
• Configuration
4,194,304 x 1 bit
• Serial access operation
Serial access time : 1.5 ms
Serial read/write time : 2.5 ms
• Low current drain
150 mA max. (VCC = 4 V with data stored and under standard conditions)
• Refresh operation
A self-refresh function is supported.
• Wide operation voltage range
Single 3.5 to 5.5 V
• Addressing
Units of 1024 words
• Process
0.45 mm double well CMOS process
• Package :
26/20-pin plastic SOJ (SOJ26/20-P-300-1.27) (Product name : MSM6684BJS)
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MSM6684B pdf
¡ Semiconductor
AC characteristics
Parameter
Read/Write Cycle Time
Access Time
Output Turn-off Delay Time
I/O Signal Rise Time
RWCK Pre-charge Time
RWCK Pulse Time
SAS Cycle Time
SAS Pre-charge Time
SAS Pulse Width
Address Setup Time
Adress Hold Time
TAS Setup Time
TAS . RWCK Setup Time
TAS Pulse Width
Read Instruction Setup Time
Read Instruction Hold Time
Write Instruction Setup Time
Write Instruction Hold Time
Write Instruction Pulse Width
WE. RWCK Read Time
Data Setup Time
Data Hold Time
RWCK. WE Delay Time
Symbol
tRWC
tACC
tOFF
tT
tRWP
tRW
tSSC
tSAP
tSAS
tAS
tAH
tATS
tTRS
tTAS
tRRS
tRRH
tWRS
tWRH
tWP
tRWL
tDS
tDH
tRWD
Min.
2,500
0
3
1,000
1,500
100
50
50
0
50
50
50
50
0
250
0
50
50
50
0
50
50
MSM6684B
(VCC = 3.5 V to 5.5 V, Ta = 0 to 70°C)
Max.
Units
— ns
1,500
ns
50 ns
50 ns
— ns
10,000
ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
— ns
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