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January 2005
(R)
AS7C4096 AS7C34096
5V/3.3V 512K x 8 CMOS SRAM
Features
* AS7C4096 (5V version) * AS7C34096 (3.3V version) * Industrial and commercial temperature * Organization: 524,288 words x 8 bits * Center power and ground pins * High speed
- 10/12/15/20 ns address access time - 5/6/7/8 ns output enable access time
* Low power consumption: STANDBY
- 110 mW (AS7C4096) / max CMOS - 72 mW (AS7C34096) / max CMOS
* Equal access and cycle times * Easy memory expansion with CE, OE inputs * TTL-compatible, three-state I/O * JEDEC standard packages * ESD protection 2000 volts * Latch-up current 100 mA
- 400 mil 36-pin SOJ - 44-pin TSOP 2
* Low power consumption: ACTIVE
- 1375 mW (AS7C4096) / max @ 12 ns - 576 mW (AS7C34096) / max @ 10 ns
Logic block diagram
VCC GND Input buffer A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 I/O1
Pin arrangements
36-pin SOJ (400 mil)
A0 A1 A2 A3 A4 CE I/O1 I/O2 VCC GND I/O3 I/O4 WE A5 A6 A7 A8 A9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 NC A18 A17 A16 A15 OE I/O8 I/O7 GND VCC I/O6 I/O5 A14 A13 A12 A11 A10 NC NC NC A0 A1 A2 A3 A4 CE I/O1 I/O2 VCC GND I/O3 I/O4 WE A5 A6 A7 A8 A9 NC NC
44-pin TSOP 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 NC NC NC A18 A17 A16 A15 OE I/O8 I/O7 GND VCC I/O6 I/O5 A14 A13 A12 A11 A10 NC NC NC
Row decoder
524,288 x 8 Array (4,194,304)
Sense amp
I/O8 Column decoder A10 A11 A12 A13 A14 A15 A16 A17 A18 WE OE CE
Control Circuit
Selection guide
Maximum address access time Maximum outputenable access time Maximum operating current Maximum CMOS standby current AS7C4096 AS7C34096 AS7C4096 AS7C34096 -10 10 5 - 160 - 20 -12 12 6 250 130 20 20 -15 15 7 220 110 20 20 -20 20 8 180 100 20 20 Unit ns ns mA mA mA mA
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Copyright (c) Alliance Semiconductor. All rights reserved.
AS7C4096 AS7C34096
(R)
Functional description
The AS7C4096 and AS7C34096 are high-performance CMOS 4,194,304-bit Static Random Access Memory (SRAM) devices organized as 524,288 words x 8 bits. They are designed for memory applications where fast data access, low power, and simple interfacing are desired. Equal address access and cycle times (tAA, tRC, tWC) of 10/12/15/20 ns with output enable access times (tOE) of 5/6/7/8 ns are ideal for high-performance applications. The chip enable input CE permits easy memory expansion with multiple-bank memory systems. When CE is high the device enters standby mode. The AS7C4096/AS7C34096 is guaranteed not to exceed 110/72 mW power consumption in CMOS standby mode. A write cycle is accomplished by asserting write enable (WE) and chip enable (CE). Data on the input pins I/O1-I/O8 is written on the rising edge of WE (write cycle 1) or CE (write cycle 2). To avoid bus contention, external devices should drive I/ O pins only after outputs have been disabled with output enable (OE) or write enable (WE). A read cycle is accomplished by asserting output enable (OE) and chip enable (CE), with write enable (WE) high. The chip drives I/O pins with the data word referenced by the input address. When either chip enable or output enable is inactive, or write enable is active, output drivers stay in high-impedance mode. All chip inputs and outputs are TTL-compatible, and operation is from either a single 5V(AS7C4096) or 3.3V(AS7C34096) supply. Both devices are available in the JEDEC standard 400-mil 36-pin SOJ and 44-pin TSOP 2 packages.
Absolute maximum ratings
Parameter Voltage on VCC relative to GND Voltage on any pin relative to GND Power dissipation Storage temperature Temperature with VCC applied DC current unto output (low) Device AS7C4096 AS7C34096 Symbol Vt1 Vt1 Vt2 PD Tstg Tbias IOUT Min -1 -0.5 -0.5 - -65 -55 - Max +7.0 +5.0 VCC +0.5 1.0 +150 +125 20 Unit V V V W C C mA
NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions outside those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Truth table
CE H L L L WE X H H L OE X H L X Data High Z High Z DOUT DIN Mode Standby (ISB, ISB1) Output disable (ICC) Read (ICC) Write (ICC)
Key: X = Don't care, L = Low, H = High
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Recommended operating condition
Parameter Supply voltage Device AS7C4096 AS7C34096 AS7C34096 AS7C4096 AS7C34096 Symbol VCC(12/15/20) VCC (10) VCC(12/15/20) VIH VIH VIL1 TA TA Min 4.5 3.15 3.0 2.2 2.0 -0.5 0 -40 Nominal 5.0 3.30 3.3 - - - - - Max 5.5 3.6 3.6 VCC + 0.5 VCC + 0.5 0.8 70 85 Unit V V V V V V C C
Input voltage Ambient operating temperature commercial industrial
1 VIL min = -1.0V for pulse width less than 5ns.
DC operating characteristics (over the operating range)1
Parameter Symbol Input leakage current Output leakage current Operating power supply current Standby power supply current Output voltage |ILI| |ILO| Test conditions VCC = Max, VIN = GND to VCC VCC = Max, CE = VIH VOUT= GND to VCC VCC = Max, CE < VIL f = fMax, IOUT = 0mA VCC = Max, CE = VIH f = fMax, IOUT = 0mA Device AS7C4096/ AS7C34096 AS7C4096/ AS7C34096 AS7C4096 AS7C34096 AS7C4096 AS7C34096 AS7C4096 -10 -12 -15 -20 Min Max Min Max Min Max Min Max Unit - - - - - - - - - 1 1 - 160 - 60 - 20 0.4 - - - - - - - - - - 2.4 1 1 250 130 60 60 20 20 0.4 - - - - - - - - - - 2.4 1 1 220 110 60 60 20 20 0.4 - - - - - - - - - - 2.4 1 1 A A
180 mA 100 60 60 20 20 0.4 - mA mA V V
ICC ISB ISB1 VOL VOH
VCC = Max, CE VCC - 0.2V, VIN 0.2V or VIN AS7C34096 VCC - 0.2V, f = 0 IOL = 8 mA, VCC = Min AS7C4096/ IOH = -4 mA, VCC = Min
AS7C34096 2.4
Capacitance (f = 1MHz, TA= 25 C, VCC = NOMINAL)2
Parameter Input capacitance I/O capacitance Symbol CIN CI/O Signals A, CE, WE, OE I/O Test conditions VIN = 0V VIN = VOUT = 0V Max 5 7 Unit pF pF
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AS7C4096 AS7C34096
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Read cycle (over the operating range)3,9
Parameter Read cycle time Address access time Chip enable (CE) access time Output enable (OE) access time Output hold from address change CE Low to output in low Z CE High to output in high Z OE Low to output in low Z OE High to output in high Z Power up time Power down time -10 Symbo l Min Max tRC 10 - tAA - 10 tACE - 10 tOE - 5 tOH 3 - tCLZ 3 - tCHZ - 5 tOLZ 0 - tOHZ - 5 tPU 0 - tPD - 10 Min 12 - - - 3 3 - 0 - 0 - -12 Max - 12 12 6 - - 6 - 6 - 12 Min 15 - - - 3 0 - 0 - 0 - -15 Max - 15 15 7 - - 7 - 7 - 15 Min 20 - - - 3 0 - 0 - 0 - -20 Max - 20 20 8 - - 9 - 9 - 20 Unit Notes ns ns 3 ns 3 ns ns 5 ns 4, 5 ns 4, 5 ns 4, 5 ns 4, 5 ns 4, 5 ns 4, 5
Key to switching waveforms
Rising input Falling input Undefined/don't care
Read waveform 1 (address controlled)3,6,7,9
tRC Address tAA DOUT Data valid tOH
Read waveform 2 (CE, OE controlled)3,6,8,9
tRC1 CE tOE OE tOLZ tACE DOUT tCLZ Supply current tPU 50% Data valid tPD 50% ICC ISB tOHZ tCHZ
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Write cycle (over the operating range)11
-10 Parameter Symbol Min Max Write cycle time tWC 10 - Chip enable (CE) to write end tCW 7 - Address setup to write end tAW 7 - Address setup time tAS 0 - Write pulse width (OE = high) tWP1 7 - Write pulse width (OE = low tWP2 10 - Address hold from end of write tAH 0 - Write recovery time tWR 0 - Data valid to write end tDW 5 - Data hold time tDH 0 - Write enable to output in high Z tWZ 0 5 Output active from write end tOW 3 - -12 Min Max 12 - 8 - 8 - 0 - 8 - 12 - 0 - 0 - 6 - 0 - 0 6 3 - -15 Min Max 15 - 10 - 10 - 0 - 10 - 15 - 0 - 0 - 7 - 0 - 0 7 3 - -20 Min Max 20 - 12 - 12 - 0 - 12 - 20 - 0 - 0 - 9 - 0 - 0 9 3 - Unit Notes ns ns ns ns ns ns ns ns ns ns 4, 5 ns 4, 5 ns 4, 5
Write waveform 1 (WE controlled)10,11
tWC tAW Address WE tAS DIN tWZ DOUT tWP tDW Data valid tOW tDH tWR tAH
Write waveform 2 (CE controlled)10,11
tWC tAW Address tAS CE WE tWZ DIN DOUT tWP tDW Data valid tDH tCW tWR tAH
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AS7C4096 AS7C34096
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AC test conditions
Output load: see Figure B or Figure C. Input pulse level: GND to 3.0V. See Figures A, B, and C. Input rise and fall times: 2 ns. See Figure A. Input and output timing reference levels: 1.5V.
+3.0V GND DOUT 255 Thevenin equivalent: 168 DOUT +1.728V +5V 480 C13 DOUT 350 +3.3V 320 C13
90% 10%
90% 10%
2 ns Figure A: Input pulse
GND Figure B: 5V Output load
GND Figure C: 3.3V Output load
Notes
1 2 3 4 5 6 7 8 9 10 11 12 13 During VCC power-up, a pull-up resistor to VCC on CE is required to meet ISB specification. This parameter is sampled, but not 100% tested. For test conditions, see AC Test Conditions. tCLZ and tCHZ are specified with CL = 5pF as in Figure C. Transition is measured 500 mV from steady-state voltage. This parameter is guaranteed, but not tested. WE is HIGH for read cycle. CE and OE are LOW for read cycle. Address valid prior to or coincident with CE transition Low. All read cycle timings are referenced from the last valid address to the first transitioning address. CE or WE must be HIGH during address transitions. Either CE or WE asserting high terminates a write cycle. All write cycle timings are referenced from the last valid address to the first transitioning address. Not applicable. C = 30pF, except at high Z and low Z parameters, where C = 5pF.
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AS7C4096 AS7C34096
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Typical DC and AC characteristics 12
Normalized supply current ICC, ISB vs. supply voltage VCC Normalized supply current ICC, ISB vs. ambient temperature Ta Normalized ISB1 (log scale) 625 25 5 1 0.2 Normalized supply current ISB1 vs. ambient temperature Ta
1.4 1.2 Normalized ICC, ISB 1.0 0.8 0.6 0.4 0.2
1.4 1.2 Normalized ICC, ISB
ICC
1.0 0.8 0.6 0.4 0.2
ICC
VCC = VCC(NOMINAL)
ISB
ISB
0.04 -55 -10 35 80 125 Ambient temperature (C)
0.0 MIN
NOMINAL Supply voltage (V)
MAX
0.0 -55
-10 35 80 125 Ambient temperature (C) Normalized access time tAA vs. ambient temperature Ta VCC = VCC(NOMINAL) Normalized ICC
1.5 Normalized access time 1.4 1.3 1.2 1.1 1.0 0.9 0.8 MIN
Normalized access time tAA vs. supply voltage VCC
1.5 Normalized access time 1.4 1.3 1.2 1.1 1.0 0.9 0.8 -55
1.4 1.2 1.0 0.8 0.6 0.4 0.2
Normalized supply current ICC vs. cycle frequency 1/tRC, 1/tWC VCC = VCC(NOMINAL) Ta = 25 C
Ta = 25 C
NOMINAL Supply voltage (V) Output source current IOH vs. output voltage VOH
MAX
-10 35 80 125 Ambient temperature (C) Output sink current IOL vs. output voltage VOL VCC = VCC(NOMINAL) Change in tAA (ns) Ta = 25 C
0.0
0
25 50 75 Cycle frequency (MHz)
100
140 Output source current (mA) 120 100 80 60 40 20 0 0
140 Output sink current (mA) 120 100 80 60 40 20 0 0
35 30 25 20 15 10 5 0 VCC 0
Typical access time change tAA vs. output capacitive loading VCC = VCC(NOMINAL)
VCC = VCC(NOMINAL) Ta = 25 C
Output voltage (V)
VCC
Output voltage (V)
250 500 750 Capacitance (pF)
1000
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AS7C4096 AS7C34096
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Package dimensions
44 434241403938373635343332313029282726252423
c
44-pin TSOP 2
e He
1 2 3 4 5 6 7 8 9 101112131415161718 19202122 d A2 A1 b E l 0-5
A
A A1 A2 b c d e He E l
44-pin TSOP 2 Min (mm) Max (mm) 1.2 0.05 0.15 0.95 1.05 0.30 0.45 0.21 0.12 18.31 18.52 10.06 10.26 11.68 11.94 0.80 (typical) 0.40 0.60 36-pin SOJ 400 Min(mm) Max(mm) .128 0.148 0.025 - 0.105 0.115 0.015 0.020 0.026 0.032 0.007 0.013 .920 .930 0.045 0.055 0.405 0.395 0.435 0.445 0.370 BSC
e
D b 36-pin SOJ E1 E2 A1 b1 c A2 E Seating Plane A
Pin 1
A A1 A2 b b1 c D e E1 E2 E
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AS7C4096 AS7C34096
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Ordering codes
Package SOJ Version 5V commercial 5V industrial 3.3V commercial 3.3V industrial 5V commercial 5V industrial 3.3V commercial 3.3V industrial 10 ns NA NA AS7C34096-10JC NA NA NA AS7C34096-10TC NA 12 ns AS7C4096-12JC AS7C4096-12JI AS7C34096-12JC AS7C34096-12JI AS7C4096-12TC AS7C4096-12TI AS7C34096-12TC AS7C34096-12TI 15 ns AS7C4096-15JC AS7C4096-15JI AS7C34096-15JC AS7C34096-15JI AS7C4096-15TC AS7C4096-15TI AS7C34096-15TC AS7C34096-15TI 20 ns AS7C4096-20JC AS7C4096-20JI AS7C34096-20JC AS7C34096-20JI AS7C4096-20TC AS7C4096-20TI AS7C34096-20TC AS7C34096-20TI
TSOP 2
Note: Add suffix "N" to the above part number for lead free devices, Ex. AS7C4096-12JCN
Part numbering system
AS7C SRAM prefix X Voltage: Blank: 5V CMOS 3: 3.3V CMOS 4096 -XX J or T Packages: J: SOJ 400 mil T: TSOP 2 X N Device Access number time Temperature ranges: C: Commercial, 0C to 70C Lead free device I: Industrial, -40C to 85C
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(c) Copyright Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in Alliance's Terms and Conditions of Sale (which are available from Alliance). All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of products from Alliance does not convey a license under any patent rights, copyrights, mask works rights, trademarks, or any other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of 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.

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