AS7C251MPFS32A ALSC [Alliance Semiconductor Corporation], AS7C251MPFS32A Datasheet

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AS7C251MPFS32A

Manufacturer Part Number
AS7C251MPFS32A
Description
2.5V 1M x 32/36 pipelined burst synchronous SRAM
Manufacturer
ALSC [Alliance Semiconductor Corporation]
Datasheet
February 2005
Features
• Organization: 1,048,576 words × 32 or 36 bits
• Fast clock speeds to 200 MHz
• Fast clock to data access: 3.1/3.5/3.8 ns
• Fast OE access time: 3.1/3.5/3.8 ns
• Fully synchronous register-to-register operation
• Single-cycle deselect
• Asynchronous output enable control
• Available in 100-pin TQFP package
Logic block diagram
Selection guide
Minimum cycle time
Maximum clock frequency
Maximum clock access time
Maximum operating current
Maximum standby current
Maximum CMOS standby current (DC)
2/14/05, v.1.3
A[19:0]
ADSC
ADSP
GWE
BWE
CLK
ADV
BW
BW
BW
BW
CE0
CE1
CE2
2.5V 1M × 32/36 pipelined burst synchronous SRAM
OE
ZZ
a
d
c
b
Power
down
Alliance Semiconductor
20
D
D
CE
CLK
CLK
D
CLK
D
CLK
D
CLK
D
CE
CLK
D
CLK
CLK
CE
CLR
Byte write
Byte write
Byte write
Byte write
registers
registers
registers
registers
register
Enable
Address
register
register
delay
Enable
DQ
DQ
DQ
DQ
b
d
c
a
Burst logic
Q
Q
Q
Q
Q
Q
Q
-200
• Individual byte write and global write
• Multiple chip enables for easy expansion
• 2.5V core power supply
• Linear or interleaved burst control
• Snooze mode for reduced power-standby
• Common data inputs and data outputs
200
450
170
LBO
3.1
90
5
Q0
Q1
20
®
2
18
20
2
CLK
OE
32/36
registers
Output
4
-166
1M × 32/36
166
400
150
3.5
90
Memory
6
DQ[a:d]
32/36
array
32/36
CLK
registers
Input
Copyright © Alliance Semiconductor. All rights reserved.
AS7C251MPFS32A
AS7C251MPFS36A
-133
133
350
140
7.5
3.8
90
1 of 19
Units
MHz
mA
mA
mA
ns
ns

Related parts for AS7C251MPFS32A

AS7C251MPFS32A Summary of contents

Page 1

... Byte write registers CLK D Q Enable CE register CLK CLK D Q Enable Power delay down register CLK -200 5 200 3.1 450 170 90 Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A 1M × 32/36 Memory array 32/36 32/ Output Input registers registers CLK 32/36 DQ[a:d] -166 -133 6 7.5 166 133 3.5 3.8 400 350 150 140 ...

Page 2

... PL-SCD PL-SCD PL-SCD PL-DCD PL-DCD PL-DCD NTD-PL NTD-PL NTD-PL NTD-FT NTD-FT NTD- Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Speed 200/166/133 MHz 200/166/133 MHz 200/166/133 MHz 200/166/133 MHz 200/166/133 MHz 200/166/133 MHz 7.5/8.5/10 ns 7.5/8.5/10 ns 7.5/8.5/10 ns 200/166/133 MHz 200/166/133 MHz 200/166/133 MHz 7.5/8.5/10 ns 7.5/8.5/10 ns 7.5/8.5/ ...

Page 3

... DQd5 V 26 SSQ V 27 DDQ 28 DQd6 29 DQd7 30 NC/DQPd Note: For pins 1, 30, 51, and 80, NC applies to the x32 configuration. DQPn applies to the x36 configuration. 2/14/05, v.1.3 ® TQFP 14 x 20mm Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A 80 DQPb/NC 79 DQb7 78 DQb6 77 V DDQ 76 V SSQ 75 DQb5 DQb4 74 73 ...

Page 4

... ADSP must be sampled high when ADSC is sampled low to initiate a cycle with ADSC. WE signals are sampled on the clock edge that samples ADSC low (and ADSP high). Master chip enable CE0 blocks ADSP, but not ADSC. The AS7C251MPFS32A/36A family operates from a core 2.5V power supply. These devices are available in a 100-pin TQFP package. TQFP capacitance ...

Page 5

... DESELECT or READ cycle should be given while the SRAM is transitioning out of SNOOZE MODE. PUS 2/14/05, v.1.3 ® or left floating, device follows interleaved Burst order. When DD is guaranteed after the time t is met. After entering SNOOZE MODE, all inputs except ZZ is SB2 ZZI Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Description . The duration of SB2 ...

Page 6

... High Starting Address First Increment Second Increment Third Increment Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Linear burst address (LBO = ...

Page 7

... Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A CLK Operation Deselect Deselect Deselect Deselect Deselect External Begin read External Begin read ...

Page 8

... DD DDQ V –0 –0 – – OUT T –65 stg T –65 bias Symbol Min V 2.375 DD V 2.375 DDQ Vss 0 Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Max Unit +3 0 0.3 V DDQ 1 +150 C o +135 C Nominal Max Unit 2.5 2.625 V 2.5 2.625 ...

Page 9

... All V – 0.2V, Deselected < Max Deselected < 0.2V, I SB1 ≤ 0.2V or ≥ V all ≥ V Deselected Max I SB2 ≤ ≥ V all Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Min Max -2 2 < OUT DDQ * 1 1.7 V DDQ ** -0.3 0.7 ** -0.3 0.7 1.7 – ...

Page 10

... ADSCS t 0.4 – 0.5 ADVH t 0.4 – 0.5 ADSPH t 0.4 – 0.5 ADSCH Conditions Symbol ZZ > SB2 t PDS t PUS t ZZI t RZZI Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A -133 Max Min Max Unit Notes 166 – 133 MHz – 7.5 – ns 3.5 – 3.8 ns 3.5 – 3.8 ns – 0 – ns 2,3,4 – 1.5 – – ...

Page 11

... ADV inserts wait states HZOE t OH Q(A2) Q(A2Ý01) Q(A2Ý10) Read Burst Burst Suspend Burst Q(A2) Read Read Read Read Q(A 2Ý01 ) Q(A 2Ý10 ) Q(A 2Ý10 ) Q(A 2Ý11 ) Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Undefined A3 t HZC Q(A2Ý11) Q(A3) Q(A3Ý01) Q(A3Ý10) Read Burst Burst Burst Q(A3) Read Read Read DSEL Q(A 3Ý01 ) Q(A 3Ý10 ) Q(A 3Ý ...

Page 12

... CL ADSC LOADS NEW ADDRESS A2 ADV SUSPENDS BURST D(A2) D(A2Ý01) D(A2Ý01) D(A2Ý10) ADV Suspend Read Suspend Burst Write Q(A2) Write Write D D(A 2Ý01 ) D(A 2Ý01 ) D(A 2Ý10 ) Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A t t ADSCS ADSCH ADVH ADVS D(A2Ý11) D(A3) D(A3Ý01) D(A3Ý10) ADV ...

Page 13

... ADVH ADVS D(A2 HZOE LZOE t LZC Q(A1) Suspend Read Suspend Read Read Q(A2) Write Q(A3) Q(A1) D Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Q(A3) Q(A3Ý01) Q(A3Ý10) Q(A3Ý11) ADV ADV ADV Burst Burst Burst Read Read Read Q(A 3Ý01 ) Q(A 3Ý10 ) Q(A 3Ý ...

Page 14

... CSS CSH CE0,CE2 CE1 ADV LZOE Q(A1) Dout Din READ READ Q(A1) Q(A2) 2/14/05, v.1.3 ® t CYC HZOE Q(A2) Q(A3) Q(A4 D(A5) D(A6) READ READ WRITE Q(A3) Q(A4) D(A5) Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A LZOE Q(A8 D(A7) READ WRITE WRITE READ Q(A9) D(A7) D(A6) Q(A8 Q(A9 ...

Page 15

... ZZ I supply S READ USPEND READ Q(A1) Q(A1) 2/14/05, v.1.3 ® HZC t PUS t PDS ZZ Recovery Cycle ZZ Setup Cycle t ZZI t RZZI I SB2 Sleep State Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A t CYC D(A2) t HZOE D(A2(Ý01)) Normal Operation Mode READ USPEND Q(A2) WRITE TINUE D(A2) WRITE D( Ý01) ...

Page 16

... DDQ OUT 30 pF* Figure B: Output load (A) at any given temperature and voltage. LZC is measured as low if below VIL. CL Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A Thevenin equivalent: +2.5V 319Ω/1667Ω D OUT /2 5 pF* 353Ω/1538Ω GND *including scope and jig capacitance ...

Page 17

... Package dimensions 100-pin quad flat pack (TQFP) TQFP Min Max A1 0.05 0.15 A2 1.35 1.45 b 0.22 0.38 c 0.09 0.20 D 13.90 14.10 E 19.90 20.10 e 0.65 nominal Hd 15.85 16.15 He 21.80 22.20 L 0.45 0.75 L1 1.00 nominal α 0° 7° Dimensions in millimeters 2/14/05, v.1.3 ® Alliance Semiconductor AS7C251MPFS32A AS7C251MPFS36A α ...

Page 18

... Ordering information Package & Width 200 MHz AS7C251MPFS32A-200TQC TQFP x32 AS7C251MPFS32A-200TQI AS7C251MPFS36A-200TQC TQFP x36 AS7C251MPFS36A-200TQI Note: Add suffix ‘N’ to the above part numbers for lead free parts (Ex AS7C251MPFS32A-200TQC Part numbering guide AS7C Alliance Semiconductor SRAM prefix 2. Operating voltage 2.5V 3 ...

Page 19

... Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use. AS7C251MPFS32A AS7C251MPFS36A ® Copyright © Alliance Semiconductor All Rights Reserved Part Number: AS7C251MPFS32A / AS7C251MPFS36A Document Version: v.1.3 ...

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