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3.3 VOLT MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8, and 4,096 x 8
IDT72V10081, IDT72V11081 IDT72V12081, IDT72V13081 IDT72V14081
FEATURES
* * * * * * * * * * * *
DESCRIPTION
The IDT72V10081/72V11081/72V12081/72V13081/72V14081 devices are low-power First-In, First-Out (FIFO) memories with clocked read and write controls. These devices have a 256, 512, 1,024, 2,048 and 4,096 x 8-bit memory array, respectively. These FIFOs are applicable for a wide variety of data buffering needs such as graphics and interprocessor communication. These FIFOs have 8-bit input and output ports. The input port is controlled by a free-running clock (WCLK) and Write Enable pin (WEN). Data is written into the Multimedia FIFO on every rising clock edge when the Write Enable pin is asserted. The output port is controlled by another clock pin (RCLK) and Read Enable pin (REN). The Read Clock can be tied to the Write Clock for single clock operation or the two clocks can run asynchronous of one another for dual-clock operation. An Output Enable pin (OE) is provided on the read port for three-state control of the output. The Multimedia FIFOs have two fixed flags, Empty (EF) and Full (FF). These FIFOs are fabricated using IDT's submicron CMOS technology.
256 x 8-bit organization array (IDT72V10081) 512 x 8-bit organization array (IDT72V11081) 1,024 x 8-bit organization array (IDT72V12081) 2,048 x 8-bit organization array (IDT72V13081) 4,096 x 8-bit organization array (IDT72V14081) 15 ns read/write cycle time 5V input tolerant Independent Read and Write clocks Empty and Full Flags signal FIFO status Output Enable puts output data bus in high-impedance state Available in 32-pin plastic Thin Quad FlatPack (TQFP) Industrial temperature range (-40C to +85C)
FUNCTIONAL BLOCK DIAGRAM
WCLK WEN
WRITE CONTROL
READ CONTROL
RCLK REN
FIFO ARRAY D0 - D7 Data In x8
OE Q0 - Q7 Data Out x8
RESET LOGIC
FLAG OUTPUTS
RS
EF
FF
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IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGES
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2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
NOVEMBER 2003
DSC-6161/2
IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
GND
INDEX
32 31 30 29 28 27 26 25 D6 D7 DNC(1) DNC(1) GND R EN RCLK GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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RS
D5
D4
D3
D2
D1
D0
24 23 22 21 20 19 18 17
WEN WCLK VCC VCC Q0 Q1 Q2 Q3
FF Q7
Q6
Q5
Q4
NOTE: 1. DNC = Do Not Connect. TQFP (PR32-1, order code: PF) TOP VIEW
PIN DESCRIPTIONS
Symbol D0-D7
EF FF OE
Name Data Inputs Empty Flag Full Flag Output Enable Data Outputs Read Clock Read Enable Reset Write Clock Write Enable Power Ground
I/O I O O I O I I I I I I I
DNC(1)
OE EF
Description Data inputs for a 8-bit bus. When EF is LOW, the FIFO is empty and further data reads from the output are inhibited. When EF is HIGH, the FIFO is not empty. EF is synchronized to RCLK. When FF is LOW, the FIFO is full and further data writes into the input are inhibited. When FF is HIGH, the FIFO is not full. FF is synchronized to WCLK. When OE is LOW, the data output bus is active. If OE is HIGH, the output data bus will be in a high-impedance state. Data outputs for a 8-bit bus. Data is read from the FIFO on a LOW-to-HIGH transition of RCLK when REN is asserted. When REN is LOW, data is read from the FIFO on every LOW-to-HIGH transition of RCLK. Data will not be read from the FIFO if the EF is LOW. When RS is set LOW, internal read and write pointers are set to the first location of the RAM array, FF goes HIGH, and EF goes LOW. A Reset is required before an initial Write after power-up. Data is written into the FIFO on a LOW-to-HIGH transition of WCLK when the Write Enable is asserted. When WEN is LOW, data is written into the FIFO on every LOW-to-HIGH transition WCLK. Data will not be written into the FIFO if the FF is LOW. 3.3V volt power supply. Ground pin.
Q0-Q7 RCLK
REN RS
WCLK
WEN
VCC GND
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IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) TSTG IOUT Rating Terminal Voltage with Respect to GND Storage Temperature DC Output Current Industrial -0.5 to +5 -55 to +125 -50 to +50 Unit V C mA
RECOMMENDED OPERATING CONDITIONS
Symbol VCC GND VIH VIL TA Parameter Supply Voltage Industrial Supply Voltage Input High Voltage Industrial Input Low Voltage Industrial Operating Temperature Industrial Min. 3.0 0 2.0 -0.5 -40 Typ. 3.3 0 -- -- -- Max. Unit 3.6 0 5.5 0.8 85 V V V V C
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 the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VCC terminal only.
DC ELECTRICAL CHARACTERISTICS
(Industrial: VCC = 3.3V 0.3V, TA = -40C to +85C)
IDT72V10081 IDT72V11081 IDT72V12081 IDT72V13081 IDT72V14081 Industrial tCLK = 15 ns Symbol ILI
(1) (2)
Parameter Input Leakage Current (Any Input) Output Leakage Current Output Logic "1" Voltage, IOH = -2mA Output Logic "0" Voltage, IOL = 8mA
Min. -1 -10 2.4 -- -- --
Typ. -- -- -- -- -- --
Max. 1 10 -- 0.4 20 5
Unit A A V V mA mA
ILO
VOH VOL ICC1
(3,4,5)
Active Power Supply Current Standby Current
ICC2(3,6)
NOTES: 1. Measurements with 0.4 VIN VCC. 2. OE VIH, 0.4 VOUT VCC. 3. Tested with outputs disabled (IOUT = 0). 4. RCLK and WCLK toggle at 20 MHz and data inputs switch at 10 MHz. 5. Typical ICC1 = 0.17 + 0.48*fS + 0.02*CL*fS (in mA) with VCC = 3.3V, TA = 25C, fS = WCLK frequency = RCLK frequency (in MHz, using TTL levels), data switching at fS/2, CL = capacitive load (in pF). 6. All Inputs = VCC - 0.2V or GND + 0.2V, except RCLK and WCLK, which toggle at 20 MHz.
CAPACITANCE (TA = +25C, f = 1.0MHz)
Symbol CIN(2) COUT(1,2) Parameter Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Max. 10 10 Unit pF pF
NOTES: 1. With output deselected (OE VIH). 2. Characterized values, not currently tested.
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IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
AC ELECTRICAL CHARACTERISTICS(1)
(Industrial: VCC = 3.3 0.3V, TA = -40C to + 85C)
Industrial IDT72V10081L15 IDT72V11081L15 IDT72V12081L15 IDT72V13081L15 IDT72V14081L15 Symbol fS tA tCLK tCLKH tCLKL tDS tDH tENS tENH tRS tRSS tRSR tRSF tOLZ tOE tOHZ tWFF tREF tSKEW1 Parameter Clock Cycle Frequency Data Access Time Clock Cycle Time Clock High Time Clock Low Time Data Setup Time Data Hold Time Enable Setup Time Enable Hold Time Reset Pulse Width(1) Reset Setup Time Reset Recovery Time Reset to Flag and Output Time Output Enable to Output in Low-Z(2) Output Enable to Output Valid Output Enable to Output in High-Z(2) Write Clock to Full Flag Read Clock to Empty Flag Skew time between Read Clock & Write Clock for Empty Flag &Full Flag Min. -- 2 15 6 6 4 1 4 1 15 10 10 -- 0 3 3 -- -- 6 Max. 66.7 10 -- -- -- -- -- -- -- -- -- -- 15 -- 8 8 10 10 -- Unit MHz ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
NOTES: 1. Pulse widths less than minimum values are not allowed. 2. Values guaranteed by design, not currently tested.
3.3V 330 D.U.T.
AC TEST CONDITIONS
In Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load GND to 3.0V 3ns 1.5V 1.5V See Figure 1
510
30pF*
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or equivalent circuit
Figure 1. Output Load
*Includes jig and scope capacitances. 4
IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
SIGNAL DESCRIPTIONS INPUTS
DATA IN (D0 - D7) Data inputs for 8-bit wide data.
CONTROLS
RESET (RS) Reset is accomplished whenever the Reset (RS) input is taken to a LOW state. During reset, both internal read and write pointers are set to the first location. A reset is required after power-up before a write operation can take place. The Full Flag (FF) will be reset to HIGH after tRSF. The Empty Flag (EF) will be reset to LOW after tRSF. During reset, the output register is initialized to all zeros. WRITE CLOCK (WCLK) A write cycle is initiated on the LOW-to-HIGH transition of the Write Clock (WCLK). Data setup and hold times must be met in respect to the LOW-to-HIGH transition of the Write Clock (WCLK). The Full Flag (FF) is synchronized with respect to the LOW-to-HIGH transition of the Write Clock (WCLK). The Write and Read clocks can be asynchronous or coincident. WRITE ENABLE (WEN) When Write Enable (WEN) is low, data can be loaded into the input register and FIFO array on the LOW-to-HIGH transition of every Write Clock (WCLK). Data is stored in the FIFO array sequentially and independently of any on-going read operation. To prevent data overflow, the Full Flag (FF) will go LOW, inhibiting further write operations. Upon the completion of a valid read cycle, the Full Flag (FF) will go HIGH after tWFF, allowing a valid write to begin. Write Enable (WEN) is ignored when the FIFO is full. READ CLOCK (RCLK) Data can be read on the outputs on the LOW-to-HIGH transition of the Read Clock (RCLK). The Empty Flag (EF)is synchronized with respect to the LOWto-HIGH transition of the Read Clock (RCLK). The Write and Read clocks can be asynchronous or coincident.
READ ENABLES (REN) When both Read Enable (REN) is LOW, data is read from the FIFO array to the output register on the LOW-to-HIGH transition of the Read Clock (RCLK). When Read Enable (REN) is HIGH, the output register holds the previous data and no new data is allowed to be loaded into the register. When all the data has been read from the FIFO, the Empty Flag (EF) will go LOW, inhibiting further read operations. Once a valid write operation has been accomplished, the Empty Flag (EF) will go HIGH after tREF and a valid read can begin. The Read Enable (REN) is ignored when the FIFO is empty. OUTPUT ENABLE (OE) When Output Enable (OE) is enabled (LOW), the parallel output buffers receive data from the output register. When Output Enable (OE) is disabled (HIGH), the Q output data bus is in a high-impedance state.
OUTPUTS
FULL FLAG (FF) The Full Flag (FF) will go LOW, inhibiting further write operation, when the device is full. If no reads are performed after Reset (RS), the Full Flag (FF) will go LOW after 256 writes for the IDT72V10081, 512 writes for the IDT72V11081, 1,024 writes for the IDT72V12081, 2,048 writes for the IDT72V13081 and 4,096 writes for the IDT72V14081. The Full Flag (FF) is synchronized with respect to the LOW-to-HIGH transition of the Write Clock (WCLK). EMPTY FLAG (EF) The Empty Flag (EF) will go LOW, inhibiting further read operations, when the read pointer is equal to the write pointer, indicating the device is empty. The Empty Flag (EF) is synchronized with respect to the LOW-to-HIGH transition of the Read Clock (RCLK). DATA OUTPUTS (Q0 - Q7) Data outputs for a 8-bit wide data.
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IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
tRS RS tRSS REN tRSS WEN tRSF EF tRSF FF tRSF Q0 - Q7 OE = 0
NOTES: 1. After reset, the outputs will be LOW if OE = 0 and high-impedance if OE = 1. 2. The clocks (RCLK, WCLK) can be free-running during reset.
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tRSR
tRSR
OE = 1
(1)
Figure 2. Reset Timing
tCLK tCLKH WCLK tDS D0 - D7 DATA IN VALID tENS WEN tWFF FF tSKEW1(1) RCLK tWFF NO OPERATION tENH tDH tCLKL
REN
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NOTE: 1. tSKEW1 is the minimum time between a rising RCLK edge and a rising WCLK edge for FF to change during the current clock cycle. If the time between the rising edge of RCLK and the rising edge of WCLK is less than tSKEW1, then FF may not change state until the next WCLK edge.
Figure 3. Write Cycle Timing
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IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
INDUSTRIAL TEMPERATURE RANGE
tCLK tCLKH RCLK tENS REN tREF EF tA Q0 - Q7 tOLZ tOE OE VALID DATA tOHZ tSKEW1(1) tENH NO OPERATION tREF tCLKL
WCLK
WEN
NOTE: 1. tSKEW1 is the minimum time between a rising WCLK edge and a rising RCLK edge for EF to change during the current clock cycle. If the time between the rising edge of RCLK and the rising edge of WCLK is less than tSKEW1, then EF may not change state until the next RCLK edge.
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Figure 4. Read Cycle Timing
WCLK tDS D0 - D7 tENS WEN tSKEW1 RCLK tREF EF REN tENS tFRL
(1)
D1 D0 (First Valid Write)
D2
D3
tA Q0 - Q7 tOLZ OE tOE D0
tA D1
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NOTE: 1. When tSKEW1 minimum specification, tFRL = tCLK + tSKEW1 When tSKEW1 < minimum specification, tFRL = 2tCLK + tSKEW1 or tCLK + tSKEW1 The Latency Timings apply only at the Empty Boundary (EF = LOW).
Figure 5. First Data Word Latency Timing
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IDT72V10081/11081/12081/13081/14081 3.3V MULTIMEDIA FIFO 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8 and 4,096 x 8
NO WRITE WCLK tSKEW1 D0 - D7 tWFF FF tENS WEN tENH tWFF tDS NO WRITE
INDUSTRIAL TEMPERATURE RANGE
NO WRITE tSKEW1
tWFF tENS
(1)
RCLK REN OE LOW Q0 - Q7 tENS tENH tENS tA tA DATA IN OUTPUT REGISTER DATA READ NEXT DATA READ
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tENH
Figure 6. Full Flag Timing
WCLK tDS D0 - D7 tENS WEN tSKEW1 RCLK tREF EF REN OE LOW tA Q0 - Q7 DATA IN OUTPUT REGISTER DATA READ
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tDS DATA WRITE 1 tENH
(1)
DATA WRITE 2 tENS tENH
(1)
tFRL
tSKEW1
tFFL
tREF
tREF
NOTE: 1. When tSKEW1 minimum specification, tFRL = tCLK + tSKEW1 When tSKEW1 < minimum specification, tFRL = 2tCLK + tSKEW1 or tCLK + tSKEW1 The Latency Timings apply only at the Empty Boundary (EF = LOW).
Figure 7. Empty Flag Timing
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ORDERING INFORMATION
IDT XXXXX Device Type X Power XX Speed X Package X Process/ Temperature Range I PF Industrial (-40C to +85C) Plastic Thin Quad Flatpack (TQFP, PR32-1) Clock Cycle Time (tCLK) Speed in Nanoseconds
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Industrial
L 72V10081 72V11081 72V12081 72V13081 72V14081
Low Power 256 x 8 512 x 8 1,024 x 8 2,048 x 8 4,096 x 8 3.3V Multimedia FIFO 3.3V Multimedia FIFO 3.3V Multimedia FIFO 3.3V Multimedia FIFO 3.3V Multimedia FIFO
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DATASHEET DOCUMENT HISTORY
11/17/2003 pg. 1. 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
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for Tech Support: 408-330-1753 email: FIFOhelp@idt.com

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