IDT72V245 Integrated Device Technology, Inc., IDT72V245 Datasheet

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IDT72V245

Manufacturer Part Number
IDT72V245
Description
3.3 VOLT CMOS SyncFIFO?
Manufacturer
Integrated Device Technology, Inc.
Datasheet

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FEATURES:
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FUNCTIONAL BLOCK DIAGRAM
IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. SyncFIFO is a trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
©2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
(HF)/WXO
256 x 18-bit organization array (IDT72V205)
512 x 18-bit organization array (IDT72V215)
1,024 x 18-bit organization array (IDT72V225)
2,048 x 18-bit organization array (IDT72V235)
4,096 x 18-bit organization array (IDT72V245)
10 ns read/write cycle time
5V input tolerant
IDT Standard or First Word Fall Through timing
Single or double register-buffered Empty and Full flags
Easily expandable in depth and width
Asynchronous or coincident Read and Write Clocks
Asynchronous or synchronous programmable Almost-Empty
and Almost-Full flags with default settings
Half-Full flag capability
Output enable puts output data bus in high-impedanc state
High-performance submicron CMOS technology
Available in a 64-lead thin quad flatpack (TQFP/STQFP)
RXO
WXI
RXI
RS
FL
EXPANSION LOGIC
WRITE CONTROL
WRITE POINTER
WEN
RESET LOGIC
LOGIC
WCLK
3.3 VOLT CMOS SyncFIFO
256 x 18, 512 x 18, 1,024 x 18,
2,048 x 18, and 4,096 x 18
OE
1,024 x 18, 2,048 x 18
OUTPUT REGISTER
INPUT REGISTER
256 x 18, 512 x 18
RAM ARRAY
4,096 x 18
Q0-Q17
D0-D17
1
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DESCRIPTION:
patible versions of the IDT72205LB/72215LB/72225LB/72235LB/72245LB,
designed to run off a 3.3V supply for exceptionally low power consumption.
These devices are very high-speed, low-power First-In, First-Out (FIFO)
memories with clocked read and write controls. These FIFOs are applicable
for a wide variety of data buffering needs, such as optical disk controllers, Local
Area Networks (LANs), and interprocessor communication.
by a free-running clock (WCLK), and an input enable pin (WEN). Data is read
into the synchronous FIFO on every clock when WEN is asserted. The output
port is controlled by another clock pin (RCLK) and another enable pin (REN).
The Read Clock(RCLK) 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.
Industrial temperature range (–40° ° ° ° ° C to +85° ° ° ° ° C) is available
Green parts available, see ordering information
The IDT72V205/72V215/72V225/72V235/72V245 are functionally com-
These FIFOs have 18-bit input and output ports. The input port is controlled
TM
OFFSET REGISTER
READ CONTROL
READ POINTER
RCLK
LOGIC
LOGIC
FLAG
IDT72V205, IDT72V215,
IDT72V225, IDT72V235,
REN
FEBRUARY 2006
LD
IDT72V245
4294 drw 01
EF/OR
PAE
FF/IR
PAF
HF/(WXO)
DSC-4294/5

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IDT72V245 Summary of contents

Page 1

... • • • • • 1,024 x 18-bit organization array (IDT72V225) • • • • • 2,048 x 18-bit organization array (IDT72V235) • • • • • 4,096 x 18-bit organization array (IDT72V245) • • • • • read/write cycle time • • • • • 5V input tolerant • ...

Page 2

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 DESCRIPTION (CONTINUED) The synchronous FIFOs have two fixed flags, Empty Flag/Output Ready (EF/OR) and Full Flag/Input Ready (FF/IR), and two ...

Page 3

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 PIN DESCRIPTION Symbol Name D0–D17 Data Inputs I RS Reset I WCLK Write Clock I WEN Write Enable I RCLK ...

Page 4

... COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES Parameter Min. Typ. 3.0 3 2.0 — -0.5 — 0 — ⎯ -40 IDT72V205 IDT72V215 IDT72V225 IDT72V235 IDT72V245 Commercial & Industrial ( 10, 15 CLK Typ. Max. — 1 — 10 — — — 0.4 — 30 — capacitive load (in pF FEBRUARY 22, 2006 Max. ...

Page 5

... Includes jig and scope capacitances. See Figure 1 5 COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES Com'l & Ind'l (1) Commercial IDT72V205L15 IDT72V205L20 IDT72V215L15 IDT72V215L20 IDT72V225L15 IDT72V225L20 IDT72V235L15 IDT72V235L20 IDT72V245L15 IDT72V245L20 Min. Max. Min. Max. — 66.7 — — 20 — 6 — 8 — ...

Page 6

... IDT72V205, (512-m) writes for the IDT72V215, (1,024-m) writes for the IDT72V225, (2,048-m) writes for the IDT72V235 and (4,096–m) writes for the IDT72V245. The offset “m” is the full offset value. This parameter is also user programmable. See section on Programmable Flag Offset Loading. If there ...

Page 7

... COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES FF PAF IDT72V245 ( 2,048 H H (2) (2) 2,049 to (4,096-(m+1 (4,096-m) to 4,095 H L 4,096 PAF HF PAE OR IDT72V245 ( 2,049 L H (2) (2) 2,050 to (4,097-(m+1 (4,097-m) to 4,096 L L 4,097 H L FEBRUARY 22, 2006 HF PAE ...

Page 8

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 TABLE 3 — TRUTH TABLE FOR CONFIGURATION AT RESET FL RXI WXI EF/ Single register-buffered Empty Flag ...

Page 9

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 SIGNAL DESCRIPTIONS: INPUTS: DATA Data inputs for 18-bit wide data. CONTROLS: RESET (RS) ...

Page 10

... In FWFT mode reads are performed, PAF will go LOW after 257-m for the IDT72V205, 513-m for the IDT72V215, 1,025 for the IDT72V225, 2,049 for the IDT72V235 and 4,097 for the IDT72V245. The default values for m are noted in Table 1 and 2. If asynchronous PAF configuration is selected, the PAF is asserted LOW on the LOW-to-HIGH transition of the Write Clock (WCLK) ...

Page 11

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 REN, WEN, LD (1) FL, RXI, WXI (2) RCLK, WCLK FF/IR EF/OR PAF, WXO/ HF, RXO PAE Q - ...

Page 12

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 RCLK t t ENS ENH REN OLZ OE WCLK WEN NOTES: is ...

Page 13

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 WRITE WCLK (1) t SKEW1 WEN RCLK t t ENS ENH REN OE ...

Page 14

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 CLK t t CLKH CLKL WCLK t ENS LD t ENS WEN ...

Page 15

... D = maximum FIFO Depth. In IDT Standard Mode 256 for the IDT72V205, 512 for the IDT72V215, 1,024 for the IDT72V225, 2,048 for the IDT72V235 and 4,096 for the IDT72V245. In FWFT Mode 257 for the IDT72V205, 513 for the IDT72V215, 1,025 for the IDT72V225, 2,049 for the IDT72V235 and 4,097 for the IDT72V245. ...

Page 16

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 WCLK WXO t ENS WEN NOTE: 1. Write to Last Physical Location. RCLK RXO t ENS REN NOTE: 1. Read ...

Page 17

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 COMMERCIAL AND INDUSTRIAL 17 TEMPERATURE RANGES FEBRUARY 22, 2006 ...

Page 18

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 COMMERCIAL AND INDUSTRIAL 18 TEMPERATURE RANGES FEBRUARY 22, 2006 ...

Page 19

... D = maximum FIFO Depth. In IDT Standard Mode 256 for the IDT72V205, 512 for the IDT72V215, 1,024 for the IDT72V225, 2,048 for the IDT72V235 and 4,096 for the IDT72V245. In FWFT Mode 257 for the IDT72V205, 513 for the IDT72V215, 1,025 for the IDT72V225, 2,049 for the IDT72V235 and 4,097 for the IDT72V245. ...

Page 20

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 WRITE WCLK 1 (1) t SKEW1 WEN RCLK t ENH t ENS REN ...

Page 21

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 RCLK t t ENH ENS REN t REF OLZ t OE ...

Page 22

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 OPERATING CONFIGURATIONS SINGLE DEVICE CONFIGURATION A single IDT72V205/72V215/72V225/72V235/72V245 may be used when the application requirements are for 256/512/1,024/2,048/4,096 words or ...

Page 23

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 DEPTH EXPANSION CONFIGURATION — DAISY CHAIN TECHNIQUE (WITH PROGRAMMABLE FLAGS) These devices can easily be adapted to applications requiring more ...

Page 24

IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18 DEPTH EXPANSION CONFIGURATION (FWFT MODE) In FWFT mode, the FIFOs can be connected in series (the data outputs of one ...

Page 25

ORDERING INFORMATION XXXXX X XX IDT Device Type Power Speed NOTES: 1. Industrial temperature range product for the 15ns speed grade is available as a standard device. All other speed grades are available by special order. 2. Green parts are ...

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