W25S243AF-12 PDF даташит
Спецификация W25S243AF-12 изготовлена «Winbond» и имеет функцию, называемую «64K X 64 BURST PIPELINED HIGH-SPEED CMOS STATIC RAM». |
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Детали детали
Номер произв | W25S243AF-12 |
Описание | 64K X 64 BURST PIPELINED HIGH-SPEED CMOS STATIC RAM |
Производители | Winbond |
логотип |
17 Pages
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Preliminary W25S243A
64K × 64 BURST PIPELINED HIGH-SPEED
CMOS STATIC RAM
GENERAL DESCRIPTION
The W25S243A is a high-speed, low-power, synchronous-burst pipelined, CMOS static RAM
organized as 65,536 × 64 bits that operates on a single 3.3-volt power supply. A built-in two-bit burst
address counter supports both Pentium™ burst mode and linear burst mode. The mode to be
executed is controlled by the LBO pin. Pipelining or non-pipelining of the data outputs is controlled by
the FT pin. A snooze mode can reduces power dissipation.
This device supports 3-1-1-1-2-1-1-1 in a two-bank, back-to-back burst read cycle.
FEATURES
• Synchronous operation
• High-speed access time: 12 nS
• Single +3.3V power supply
• Individual byte write capability
• 3.3V LVTTL compatible I/O
• Clock-controlled and registered input
• Asynchronous output enable
• Pipelined/non-pipelined data output capability
• Supports snooze mode (low-power state)
• Internal burst counter supports Intel burst
(Interleaved) mode & linear burst mode
• Supports 2T/1T mode
• Packaged in 128-pin QFP and TQFP
BLOCK DIAGRAM
A(15:0)
CLK
CE(3:1)
GW
BWE
BW(8:1)
OE
ADSC
ADSP
ADV
LBO
FT
ZZ
INPUT
REGISTER
CONTROL
LOGIC
REGISTER
64K X 64
CORE
ARRAY
DATA I/O
REGISTER
I/O(64:1)
Publication Release Date: November 1998
- 1 - Revision A1
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PIN CONFIGURATION
Preliminary W25S243A
//
V/
////
/ //
/ / AA/ V
D C CVV/ BBBB/ CB/ BBVVB BDDAS
D N E N E S D C WWWWO L WG WWS D W WS S D S
Q C 2 C 3 S D E 8 7 6 5 E K E W4 3 S D 2 1 C P V Q
VSSQ
I/O33
I/O34
I/O35
I/O36
I/O37
I/O38
I/O39
I/O40
I/O41
I/O42
I/O43
VDDQ
VSSQ
I/O44
I/O45
I/O46
I/O47
I/O48
I/O49
I/O50
I/O51
I/O52
I/O53
VDDQ
VSSQ
I/O54
I/O55
I/O56
I/O57
I/O58
I/O59
I/O60
I/O61
I/O62
I/O63
I/O64
VDDQ
1
2
3
1
2
8
11 1
22 2
76 5
1
2
4
11
22
32
1
2
1
1
2
0
11
11
98
1
1
7
1
1
6
11
11
54
1
1
3
11
11
21
1
1
0
11
00
98
1
0
7
1111
0 0 0 0 102
6
5
4
3
101
100
4 99
5 98
6 97
7 96
8 95
9 94
10 93
11 92
12 91
13 90
14 89
15 88
16 87
17 86
18 85
19 84
20 83
21 82
22 81
23 80
24 79
25 78
26 77
27 76
28 75
29 74
30 73
31 72
32 71
33 70
34 69
35 68
36 67
37 66
38 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 65
9012345678901234567 8901234
VDDQ
I/O32
I/O31
I/O30
I/O29
I/O28
I/O27
I/O26
I/O25
I/O24
I/O23
I/O22
VSSQ
VDDQ
I/O21
I/O20
I/O19
I/O18
I/O17
I/O16
I/O15
I/O14
I/O13
I/O12
VSSQ
VDDQ
I/O11
I/O10
I/O9
I/O8
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
I/O1
VSSQ
V/ / AAAVVAAAAARAAAAAVVAAAZ V
SF L 1 1 1 DS1 1 1 9 8 S 7 6 5 4 3 DS2 1 0 Z D
ST B54 3 DS2 1 0 V
DS D
QO
Q
-2-
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Preliminary W25S243A
PIN DESCRIPTION
SYMBOL
A0−A15
I/O1−I/O64
CLK
CE1, CE2, CE3
GW
BWE
BW1− BW8
OE
ADV
ADSC
ADSP
ZZ
FT
TYPE
Input, Synchronous
I/O, Synchronous
Input, Clock
Input, Synchronous
Input, Synchronous
Input, Synchronous
Input, Synchronous
Input, Asynchronous
Input, Synchronous
Input, Synchronous
Input, Synchronous
Input, Asynchronous
Input, Static
LBO
Input, Static
VDDQ
VSSQ
VDD
VSS
RSV
NC
DESCRIPTION
Host address
Data Inputs/Outputs
Processor host bus clock
Chip enables
Global write
Byte write enable from cache controller
Host bus byte enables used with BWE
Output enable input
Internal burst address counter advance
Address status from Chip Set
Address status from CPU
Snooze pin for low-power state, internal pull low
Connected to VSSQ: Device operates in flow-
through (non-pipelined) mode.
Connected to VDDQ or unconnected: Device
operates in pipelined mode.
Lower address burst order
Connected to VSSQ: Device is in linear mode.
Connected to VDDQ or unconnected: Device is in
non-linear mode.
I/O power supply
I/O ground
Power supply
Ground
Reserved pin, don't use these pins
No connection
Publication Release Date: November 1998
- 3 - Revision A1
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Номер в каталоге | Описание | Производители |
W25S243AF-12 | 64K X 64 BURST PIPELINED HIGH-SPEED CMOS STATIC RAM | Winbond |
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