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HIGH SPEED 36K (4K X 9) SYNCHRONOUS DUAL-PORT RAM
Features
x
IDT70914S
x
x
x
High-speed clock-to-data output times - Military: 20/25ns (max.) - Commercial: 12/15/20ns (max.) Low-power operation - IDT70914S Active: 850 mW (typ.) Standby: 50 mW (typ.) Architecture based on Dual-Port RAM cells - Allows full simultaneous access from both ports Synchronous operation - 4ns setup to clock, 1ns hold on all control, data, and address inputs - Data input, address, and control registers
x x x x x
x
x
- Fast 12ns clock to data out - Self-timed write allows fast cycle times - 16ns cycle times, 60MHz operation TTL-compatible, single 5V (+ 10%) power supply Clock Enable feature Guaranteed data output hold times Available in 68-pin PLCC, and 80-pin TQFP Military product compliant to MIL-PRF-38535 QML Industrial temperature range (-40C to +85C) is available for selected speeds. Recommended for replacement of IDT7099 (4K x 9) if separate 9th bit data control signals are not required.
Functional Block Diagram
REGISTER REGISTER
I/O0-8L
WRITE LOGIC
MEMOR MEMORY Y ARRAY ARRAY
WRITE LOGIC
I/O0-8R
SENSE SENSE AMPS DECODER DECODER AMPS
OEL CLKL CLKENL
Selftimed Write Logic
REG en
REG en
OER CLKR CLKENR
Selftimed Write Logic
R/WL CEL
REG
REG
R/WR CER
3490 drw 01
A0L-A11L
A0R-A11R
JANUARY 2001
1
(c)2000 Integrated Device Technology, Inc. DSC-3490/6
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Description
The IDT70914 is a high-speed 4K x 9 bit synchronous Dual-Port RAM. The memory array is based on Dual-Port memory cells to allow simultaneous access from both ports. Registers on control, data, and address inputs provide low set-up and hold times. The timing latitude provided by this approach allow systems to be designed with very short cycle times. With an input data register, this device has been optimized for applications having unidirectional data flow or bi-directional data flow in bursts. The IDT70914 utilizes a 9-bit wide data path to allow for parity at the user's option. This feature is especially useful in data communication applications where it is necessary to use a parity bit for transmission/ reception error checking. Fabricated using IDT's CMOS high-performance technology, these Dual-Ports typically operate on only 850mW of power at maximum highspeed clock-to-data output times as fast as 12ns. An automatic power down feature, controlled by CE, permits the on-chip circuitry of each port to enter a very low standby power mode. The IDT70914 is packaged in a 68-pin PLCC, and an 80-pin TQFP. Military grade product is manufactured in compliance with the latest revision of MIL-PRF-38535 QML, making it ideally suited for military temperature applications demanding the highest level of performance and reliability.
Pin Configurations(1,2,3)
A5L A4L A3L A2L A1L A0L CLKENL CLKL CLKR CLKENR A0R A1R A2R A3R A4R A5R A6R
9 8 76 5 4 3 2 1 68 67 66 65 64 63 62 61 60 59 58 57 56 55 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
INDEX
A6L A7L A8L A9L A10L A11L OEL N/C VCC R/WL N/C N/C CEL GND I/O8L I/O7L I/O6L
IDT70914J J68-1(4) 68-Pin PLCC Top View(5)
54 53 52 51 50 49 48 47 46 45
26 44 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
A7R A8R A9R A10R A11R OER N/C GND GND R/WR N/C N/C CER GND I/O8R I/O7R I/O6R
, 3490 drw 03
NOTES: 1. All VCC pins must be connected to power supply. 2. All ground pins must be connected to ground supply. 3. J68-1 package body is approximately .95 in x .95 in x .17 in. 4. This package code is used to reference the package diagram. 5. This text does not indicate orientation of the actual part-marking.
N/C I/O5L VCC I/O4L I/O3L I/O2L I/O1L I/O0L GND GND I/O0R I/O1R I/O2R I/O3R VCC I/O4R I/O5R
6.42 2
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Pin Configuration(1,2,3) (con't.)
Reference
N/C A6L A7L A8L A9L A10L A11L N/C OEL N/C VCC R/WL N/C N/C CEL GND I/O8L I/O7L I/O6L N/C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
N/C N/C A5L A4L A3L A2L A1L A0L CLKENL CLKL CLKR CLKENR A0R A1R A2R A3R A4R A5R A6R N/C
IDT70914PF PN80-1(4) 80-Pin TQFP Top View(5) N/C A7R A8R A9R A10R A11R N/C OER N/C GND GND R/WR N/C N/C CER GND I/O8R I/O7R I/O6R N/C
,
3490 drw 04
NOTES: 1. All VCC pins must be connected to power supply. 2. All ground pins must be connected to ground supply. 3. PN80-1 package body is approximately 14mm x 14mm x 1.4mm. 4. This package code is used to reference the package diagram. 5. This text does not indicate orientation of the actual part-marking.
N/C N/C I/O5L VCC I/O4L I/O3L I/O2L I/O1L I/O0L GND GND I/O0R I/O1R I/O2R I/O3R VCC I/O4R I/O5R N/C N/C
3 6.42
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Absolute Maximum Ratings(1)
Symbol VTERM(2) Rating Terminal Voltage with Respect to GND Terminal Voltage Temperature Under Bias Storage Temperature DC Output Current Commercial & Industrial -0.5 to +7.0 Military -0.5 to +7.0 Unit
Maximum Operating Temperature and Supply Voltage(1,2)
Grade Ambient Temperature -55OC to+125OC 0OC to +70OC -40OC to +85OC GND 0V 0V 0V VCC 5.0V + 10% 5.0V + 10% 5.0V + 10%
3490 tbl 02
V
Military
-0.5 to VCC -55 to +125 -65 to +150 50 -0.5 to VCC -65 to +135 -65 to +150 50 V
o
VTERM(2) TBIAS TSTG IOUT
Commercial Industrial
C C
o
NOTES: 1. This is the parameter TA. This is the "instant on" casae temperature. 2. Industrial temperature: for specific speeds, packages and powers contact your
mA
3490 tbl 01
NOTES: 1. 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 above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VTERM must not exceed VCC + 10% for more than 25% of the cycle time or 10ns maximum, and is limited to < 20mA for the period of VTERM > Vcc + 10%.
Recommended DC Operating Conditions
Symbol VCC GND Parameter Supply Voltage Ground Input High Voltage Input Low Voltage Min. 4.5 0 2.2 -0.5
(1)
Typ. 5.0 0
____
Max. 5.5 0 6.0(2) 0.8
Unit V V V V
3490 tbl 03
Capacitance
(TA = +25C, f = 1.0MHz)
Symbol CIN COUT Parameter Input Capacitance Output Capacitance
TQFP Only
VIH VIL
____
Conditions VIN = 3dV VOUT = 3dV
Max. 8 9
Unit pF pF
3490 tbl 04
NOTES: 1. VIL > -1.5V for pulse width less than 10ns. 2. VTERM must not exceed VCC + 10%.
NOTES: 1. These parameters are determined by device characterization, but are not production tested. 2. 3dV references the interpolated capacitance when the input and output switch from 0V to 3V or from 3V to 0V.
DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range (VCC = 5.0V 10%)
70914S Symbol |ILI| |ILO| VOL VOH Parameter Input Leakage Current(1) Output Leakage Current Output Low Voltage Output High Voltage Test Conditions VCC = 5.5V, VIN = 0V to VCC CE = VIH, VOUT = 0V to VCC IOL = +4mA IOH = -4mA Min.
___
Max. 10 10 0.4
___
Unit A A V V
3490 tbl 05
___ ___
2.4
NOTE: 1. At VCC < 2.0V, input leakages are undefined
6.42 4
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range(4,5) (VCC = 5V 10%)
70914S12 Com 'l Only Sym bol ICC Param eter Dynam ic Op e rating Curre nt (Bo th P o rts Ac tiv e ) Stand b y Curre nt (Bo th Po rts - TTL Le ve l Inp uts ) Stand b y Curre nt (One P o rt - TTL Le ve l Inp uts ) Full S tand b y Curre nt (Bo th P o rts - All CM OS Le ve l Inp uts ) Full S tand b y Curre nt (One Po rt - All CM OS Le ve l Inp uts ) Test Condition CEL and CER = VIL, Outp uts Dis ab le d f = fMA X (1) CEL and CER = VIH f = fMA X (1) Version COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND Typ. (2) 190
____
70914S15 Com 'l Only Typ. (2) 180
____
Max. 310
____
Max. 300
____
Unit mA
ISB 1
95
____
150
____
90
____
140
____
mA
ISB 2
CE"A " = VIL and CE"B " = VIH (3) Ac tiv e P o rt Outp uts Disab le d , f=fMA X (1) Bo th P o rts CER and CEL > VCC - 0.2V V IN > VCC - 0.2V o r V IN < 0.2V , f = 0 (2) CE"A " < 0.2V and CE"B " > VCC - 0.2V (3) V IN > VCC - 0.2V o r V IN < 0.2V, Ac tiv e Po rt Outp uts Dis ab le d f = fMA X (1)
170
____
220
____
160
____
210
____
mA
ISB 3
10
____
15
____
10
____
15
____
mA
ISB 4
165
____
210
____
155
____
200
____
mA
3 490 tb l 06 a
70914S20 Com 'l & Military Sym bol ICC Param eter Dynam ic Op e rating Curre nt (Bo th P o rts Ac tiv e ) Stand b y Curre nt (Bo th Po rts - TTL Le ve l Inp uts ) Stand b y Curre nt (One P o rt - TTL Le ve l Inp uts ) Full S tand b y Curre nt (Bo th P o rts - All CM OS Le ve l Inp uts ) Full S tand b y Curre nt (One Po rt - All CM OS Le ve l Inp uts ) Test Condition CEL and CER = VIL, Outp uts Dis ab le d f = fMA X (1) CEL and CER = VIH f = fMA X (1) Version COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND COM 'L M IL & IND Typ. (2) 170 170 85 85 150 150 10 10 145 145 Max. 290 310 130 140 200 210 15 20 190 200
70914S25 Military Only Typ. (2)
____
Max.
____
Unit mA
160
____
290
____
ISB 1
mA
80
____
130
____
ISB 2
CE"A " = VIL and CE"B " = VIH (3) Ac tiv e P o rt Outp uts Disab le d , f=fMA X (1) Bo th P o rts CER and CEL > VCC - 0.2V V IN > VCC - 0.2V o r V IN < 0.2V , f = 0 (2) CE"A " < 0.2V and CE"B " > VCC - 0.2V (3) V IN > VCC - 0.2V o r V IN < 0.2V, Ac tiv e Po rt Outp uts Dis ab le d f = fMA X (1)
mA
140
____
200
____
ISB 3
mA
10
____
20
____
ISB 4
mA
135
190
3490 tb l 0 6b NOTES: 1. At fMAX, address and control lines (except Output Enable) are cycling at the maximum frequency clock cycle of 1/tCYC, using "AC TEST CONDITIONS" at input levels of GND to 3V. 2. f = 0 means no address, clock, or control lines change. Applies only to input at CMOS level standby. 3. Port "A" may be either left or right port. Port "B" is the opposite from port "A". 4. Vcc = 5V, TA = 25C for Typ, and are not production tested. ICC DC = 150mA (Typ). 5. Industrial temperature: for specific speeds, packages and powers contact your sales office.
5 6.42
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
AC Test Conditions
Input Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load GND to 3.0V 3ns Max. 1.5V 1.5V Figures 1,2 and 3
3490 tbl 07
5V
5V 893
893 DATAOUT
DATAOUT 347 30pF
347
5pF*
3490 drw 05
3490 drw 06
Figure 1. AC Output Test load.
Figure 2. Output Test Load (For tCKLZ, tCKHZ, tOLZ, and tOHZ). *Including scope and jig.
8 7 6 tCD (Typical, ns) 5 4 3 2 1 0 -1
- 9pF is the I/O capacitance of this device, and 30pF is the AC Test Load Capacitance
20 40 60 80 100 120 140 160 180 200 Capacitance (pF)
3490 drw 07
,
Figure 3. Typical Output Derating (Lumped Capacitive Load).
6.42 6
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
AC Electrical Characteristics Over the Operating Temperature Range (Read and Write Cycle Timing)(3)
70914S12 Com'l Only Symbol tCYC tCH tCL tCD tS tH tDC tCKLZ tCKHZ tOE tOLZ tOHZ tSCK tHCK Clock Cycle Time Clock High Time Clock Low Time Clock High to Output Valid Registered Signal Set-up Time Registered Signal Hold Time Data Output Hold After Clock High Clock High to Output Low-Z
(1,2) (1,2)
(Commercial: VCC = 5V 10%, TA = 0C to +70C; Military: VCC = 5V 10%, TA = -55C to +125C)
70914S15 Com'l Only Min. 20 6 6
____
Parameter
Min. 16 6 6
____
Max.
____ ____
Max.
____ ____
Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns
____
____
12
____ ____
15
____ ____
4 1 3 2
____ ____
4 1 3 2
____ ____
____ ____
____ ____
Clock High to Output High-Z
7 7
____
7 8
____
Output Enable to Output Valid Output Enable to Output Low-Z
(1,2)
0
____
0
____
Output Disable to Output High-Z(1,2) Clock Enable, Disable Set-up Time Clock Enable, Disable Hold Time
7
____ ____
7
____ ____
4 2
4 2
Port-to-Port Delay tCWDD tCSS Write Port Clock Hig h to Read Data Delay Clock-to-Clock Setup Time
____
25 13
____
30 15
ns ns
3490 tbl 08a
____
____
70914S20 Com'l & Military Symbol tCYC tCH tCL tCD tS tH tDC tCKLZ tCKHZ tOE tOLZ tOHZ tSCK tHCK Clo ck Cycle Time Clo ck Hig h Tim e Clo ck Lo w Time Clo c k Hig h to Outp ut Valid Re g iste re d Sig nal Se t-up Tim e Re g iste re d Sig nal Ho ld Tim e Data Outp ut Ho ld Afte r Clo ck Hig h Clo c k Hig h to Outp ut Lo w-Z
(1,2)
70914S25 Military Only Min. 25 10 10
____
Parameter
Min. 20 8 8
____
Max.
____ ____ ____
Max.
____ ____ ____
Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns
20
____
25
____
5 1 3 2
____ ____
6 1 3 2
____ ____
____ ____ ____
____ ____ ____
Clo ck Hig h to Outp ut Hig h-Z(1,2) Outp ut E nab le to Outp ut Valid Outp ut Enab le to Outp ut Lo w-Z(1,2) Outp ut Disab le to Outp ut Hig h-Z(1,2) Clo ck Enab le , Disab le Se t-up Time Clo ck Enab le , Disab le Ho ld Time
9 10
____
12 12
____
0
____
0
____
9
____
11
____
5 2
6 2
____
____
Port-to-Port Delay tCWDD tCSS Write Po rt Clo ck Hig h to Re ad Data De lay Clo ck-to -Clo ck Se tup Tim e
____ ____
35 15
____ ____
45 20
ns ns
3490 tbl 08b
NOTES: 1. Transition is measured 0mV from Low or High impedance voltage with the Output Test Load (Figure 2). 2. This parameter is guaranteed by device characterization, but is not production tested. 3. Industrial temperature: for specific speeds, packages and powers contact your sales office.
7 6.42
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Timing Waveform of Read Cycle, Either Side
tCYC CLK tCH tCL tSCK CLKEN tS CE tH tHCK tSCK
R/W
ADDRESS
An tCD
An + 1 tDC Qn tCKLZ (1)
An + 2
An + 3 tCKHZ (1)
DATAOUT
Qn + 1 tOHZ
(1)
Qn + 1 tOLZ tOE
3490 drw 08 (1)
OE
Timing Waveform of Write with Port-to-Port Read(2,3,4)
CLK "A"
R/W "A"
ADDR "A"
MATCH
NO MATCH
DATA IN "A"
VALID
tCCS CLK "B"
(5)
tCD R/W "B"
ADDR "B"
MATCH
NO MATCH
tCWDD DATA OUT "B"
VALID
tCD
VALID
tDC
3490 drw 09
NOTES: 1. Transition is measured 200mV from Low or High-impedance voltage with the Output Test Load (Figure 2). 2. CEL = CER = VIL, CLKENL = CLKENR = VIL. 3. OE = VIL for the reading port, port 'B'. 4. All timing is the same for left and right ports. Ports "A" may be either the left or right port. Port "B" is opposite from port "A". 5. If tCCS < maximum specified, then data from right port READ is not valid until the maximum specified for tCWDD. If tCCS > maximum specified, then data from right port READ is not valid until tCCS + tCD. tCWDD does not apply in this case.
6.42 8
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Timing Waveform of Read-to-Write Cycle No. 1(1,2) (tCYC = min.)
tCYC CLK CLKEN tS CE
(1)
tCYC tCL tCH tCL
tCH
tH
R/W
ADDRESS
An
An + 1
An + 1
(1)
An + 2
DATAIN tCD DATAOUT tCKLZ (3) Qn tCKHZ (3)
Dn + 1
(1)
Dn + 2
3490 drw 10
Timing Waveform of Read-to-Write Cycle No. 2(4) (tCYC > min.)
tCYC CLK CLKEN tS CE tH tCH
(4)
tCL
R/W
ADDRESS
An
An + 1
DATAIN tCD DATAOUT tCKLZ OE
(3)
Dn + 1
Qn tOHZ
3490 drw 11
NOTES: 1. For tCYC = min.; data out coincident with the rising edge of the subsequent write clock can occur. To ensure writing to the correct address location, the write must be repeated on the second write clock rising edge. If CE = VIL, invalid data will be written into array. The An+1 must be rewritten on the following cycle. 2. OE LOW throughout. 3. Transition is measured 0mV from Low or High-impedance voltage with the Output Test Load (Figure 2). 4. For tCYC > min.; OE may be used to avoid data out coincident with the rising edge of the subsequent write clock. Use of OE will eliminate the need for the write to be repeated.
9 6.42
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Functional Description
The IDT70914 provides a true synchronous Dual-Port Static RAM interface. Registered inputs provide very short set-up and hold times on address, data, and all critical control inputs. All internal registers are clocked on the rising edge of the clock signal. An asynchronous output enable is provided to ease asynchronous bus interfacing. The internal write pulse width is dependent on the LOW to HIGH transitions of the clock signal allowing the shortest possible realized cycle times. Clock enable inputs are provided to stall the operation of the address and data input registers without introducing clock skew for very fast interleaved memory applications. A HIGH on the CE input for one clock cycle will power down the internal circuitry to reduce static power consumption.
Truth Table I: Read/Write Control(1)
Inputs Synchronous CLK CE H L L X
(3)
Outputs Asynchronous OE X X L H I/O0-8 High-Z DATAIN DATAOUT High-Z Deselected, Power-Down Selected and Write Enabled Read Selected and Data Output Enable Read Outputs Disabled
3490 tbl 09
R/W X L H X
Mode
Truth Table II: Clock Enable Function Table(1)
Inputs Mode Load "1" Load "0" Hold (do nothing) CLK(3) X CLKEN(2) L L H H Register Inputs ADDR H L X X DATAIN H L X X Register Outputs(4) ADDR H L NC NC DATAOUT H L NC NC
3490 tbl 10
NOTES: 1. 'H' = HIGH voltage level steady state, 'h' = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition, 'L' = LOW voltage level steady state 'l' = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition, 'X' = Don't care, 'NC' = No change 2. CLKEN = VIL must be clocked in during Power-Up. 3. Control signals are initialted and terminated on the rising edge of the CLK, depending on their input level. When R/W and CE are LOW, a write cycle is initiated on the LOW-to-HIGH transition of the CLK. Termination of a write cycle is done on the next LOW-to-HIGH transistion of the CLK. 4. The register outputs are internal signals from the register inputs being clocked in or disabled by CLKEN.
6.42 10
IDT70914S High-Speed 36K (4K x 9) Synchronous Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Ordering Information
IDT XXXX Device Type A Power 999 Speed A Package A Process/ Temperature Range
Blank I (1) B J PF 12 15 20 25 S 70914
NOTE: 1. Industrial temperature range is available on selected TQFP packages in standard power. For specific speeds, packages and powers contact your sales office.
Commercial (0C to +70C) Industrial (-40C to +85C) Military (-55C to +85C) Compliant to MIL-PRF-38535 QML 68-pin PLCC (J68-1) 80-pin TQFP (PN80-1) Commercial Only Commercial Only Commercial & Military Military Only Standard Power 36K (4K x 9-Bit) Synchronous Dual-Port RAM
3490 drw 12
Speed in nanoseconds
Datasheet Document History
3/10/99: Initiated datasheet document history Converted to new format Cosmetic and typographical corrections Page 2 and 3 Added additional notes to pin configurations Changed drawing format Replaced IDT logo Page 4 Increased storage temperature parameter Clarified TA parameter Page 5 DC Electrical parameters-changed wording from "open" to "disabled" Changed 200mV to 0mV in notes Removed PGA pinout (obsolete package) Changed cycle time of 12ns part from 17ns (58MHz) to 16ns (60MHz)
6/7/99: 11/10/99: 5/24/00:
1/12/01:
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
11 6.42
for Tech Support: 831-754-4613 DualPortHelp@idt.com
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