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參數資料
| 型號： | CY7C4282V-25ASC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 64K/128Kx9 Low Voltage Deep Sync FIFOs w/ Retransmit & Depth Expansion |
| 中文描述： | 64K X 9 OTHER FIFO, 15 ns, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-64 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 251K |
| 代理商： | CY7C4282V-25ASC |
CY7C4282V
CY7C4292V
64K/128Kx9 Low Voltage Deep Sync FIFOs
w/ Retransmit & Depth Expansion
Functional Description
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
October 18, 1999
Features
3.3V operation for low power consumption and easy
integration into low-voltage systems
High-speed, low-power, first-in first-out (FIFO)
memories
64K x 9 (CY7C4282V)
128K x 9 (CY7C4292V)
0.35 micron CMOS for optimum speed/power
High-speed, Near Zero Latency (True Dual-Ported
Memory Cell), 100-MHz operation (10 ns read/write
cycle times)
Low power
—
I
CC
= 25 mA
—
I
SB
= 6 mA
Fully asynchronous and simultaneous read and write
operation
Empty, Full, and Programmable Almost Empty and Al-
most Full status flags
Retransmit function
Output Enable (OE
)
pin
Independent read and write enable pins
Supports free-running 50% duty cycle clock inputs
Width Expansion Capability
Depth Expansion Capability through token-passing
scheme (no external logic required)
64-pin 10x10 STQFP
Pin-compatible 3.3V solution for CY7C4282/92
The CY7C4282V/92V are high-speed, low-power, first-in first-
out (FIFO) memories with clocked read and write interfaces.
All devices are 9 bits wide. The CY7C4282V/92V can be cas-
caded to increase FIFO depth. Programmable features include
Almost Full/Almost Empty flags. These FIFOs provide solutions
for a wide variety of data buffering needs, including high-speed data
acquisition, multiprocessor interfaces, video and communications
buffering.
These FIFOs have 9-bit input and output ports that are con-
trolled by separate clock and enable signals. The input port is
controlled by a free-running clock (WCLK) and a Write Enable
pin (WEN).
Retransmit and Synchronous Almost Full/Almost Empty flag
features are available on these devices.
Depth expansion is possible using the Cascade Input (XI), Cas-
cade Output (XO), and First Load (FL) pins. The XO pin is connected
to the XI pin of the next device, and the XO pin of the last device
should be connected to the XI pin of the first device. The FL pin of the
first device is tied to V
SS
and the FL pin of all the remaining devices
should be tied to V
CC
When WEN is asserted, data is written into the FIFO on the
rising edge of the WCLK signal. While WEN is held active, data
is continually written into the FIFO on each cycle. The output
port is controlled in a similar manner by a free-running Read
Clock (RCLK) and a Read Enable pin (REN). In addition, the
CY7C4282V/92V have an Output Enable pin (OE). The read
and write clocks may be tied together for single-clock operation
or the two clocks may be run independently for asynchronous
read/write applications. Clock frequencies up to 67 MHz are
achievable.
FF
Logic Block Diagram
4282V–1
THREE-STATE
OUTPUT REGISTER
READ
CONTROL
FLAG
LOGIC
WRITE
CONTROL
WRITE
POINTER
READ
POINTER
RESET
LOGIC
INPUT
REGISTER
FLAG
PROGRAM
REGISTER
D
0
8
RCLK
Q
0
8
WEN
WCLK
RS
OE
Dual Port
64K x 9
128K x 9
REN
EXPANSION
LOGIC
FL/RT
XI/LD
PAF/XO
EF
PAE
PAF/XO
相關PDF資料 |
PDF描述 |
|---|---|
| CY7C4291V | 128Kx9 Low Voltage Deep Sync FIFOs(128Kx9低壓深同步先進先出（FIFO）) |
| CY7C4261V | 16Kx9 Low Voltage Deep Sync FIFOs(16Kx9低壓深同步先進先出（FIFO）) |
| CY7C4281V | 64Kx9 Low Voltage Deep Sync FIFOs(64Kx9 低壓深同步先進先出（FIFO）) |
| CY7C4291 | 128Kx9 Deep Sync FIFOs(128Kx9位 深同步先進先出（FIFO）) |
| CY7C4281 | 64Kx9 Deep Sync FIFOs(64Kx9 位深同步先進先出（FIFO）) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CY7C428-30DMB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY7C4285 WAF | 制造商:Cypress Semiconductor 功能描述: |
| CY7C4285-10ASC | 功能描述:IC DEEP SYN FIFO 64KX18 64LQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:CY7C 標準包裝:15 系列:74F 功能:異步 存儲容量:256（64 x 4） 數據速率:- 訪問時間:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:24-DIP（0.300"，7.62mm） 供應商設備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| CY7C4285-15ASC | 制造商:Rochester Electronics LLC 功能描述: |
| CY7C4285-15ASI | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Depth/Width Uni-Dir 64K x 18 64-Pin TQFP |
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