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參數(shù)資料
| 型號： | CY7C4235 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 2K x 18 Synchronous FIFOs(2K x 18 同步先進先出) |
| 中文描述： | 2K × 18（2K × 18同步先進先出同步FIFO的） |
| 文件頁數(shù)： | 16/25頁 |
| 文件大?。?/td> | 398K |
| 代理商： | CY7C4235 |
CY7C4425/4205/4215
CY7C4225/4235/4245
16
Depth Expansion Configuration
(with Programmable Flags)
The CY7C42X5 can easily be adapted to applications requir-
ing more than 64/256/512/1024/2048/4096 words of buffering.
Figure2 shows Depth Expansion using three CY7C42X5s. Maxi-
mum depth is limited only by signal loading. Follow these steps:
1. The first device must be designated by grounding the First
Load (FL) control input.
2. All other devices must have FL in the HIGH state.
3. The Write Expansion Out (WXO) pin of each device must be
tied to the Write Expansion In (WXI) pin of the next device.
4. The Read Expansion Out (RXO) pin of each device must be
tied to the Read Expansion In (RXI) pin of the next device.
5. All Load (LD) pins are tied together.
6. The Half-Full Flag (HF) is not available in the Depth Expansion
Configuration.
7. EF, FF, PAE, and PAF are created with composite flags by
ORing together these respective flags for monitoring. The
composite PAE and PAF flags are not precise.
Figure 2. Block Diagram of 192 x 18/768 x 18/1536 x 18/3072 x 18/12288 x 18 Synchronous FIFO Memory
with Programmable Flags used in Depth Expansion Configuration
42X5–23
WRITECLOCK(WCLK)
WRITE ENABLE(WEN)
RESET(RS)
LOAD(LD)
FF
PAF
PAF
FF
EF
PAE
PAE
EF
WXI RXI
FIRSTLOAD(FL)
READCLOCK(RCLK)
READ ENABLE (REN)
OUTPUT ENABLE(OE)
WXO RXO
7C4425
7C4205
7C4215
7C4225
7C4235
7C4235
PAF
FF
EF
PAE
WXI RXI
WXO RXO
7C4425
7C4205
7C4215
7C4225
7C4235
7C4235
V
CC
FIRSTLOAD(FL)
PAF
FF
EF
PAE
WXI RXI
WXO RXO
7C4425
7C4205
7C4215
7C4225
7C4235
7C4235
V
CC
FIRSTLOAD(FL)
DATAIN (D)
DATAOUT(Q)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY7C4425 | 64 x 18 Synchronous FIFOs(64 x 18 同步 先進先出) |
| CY7C4211 | 512 x 9 Synchronous FIFOs(512x9同步先進先出（FIFO）) |
| CY7C4201 | 256 x 9 Synchronous FIFOs(256x9同步先進先出（FIFO）) |
| CY7C4221 | 1K x 9 Synchronous FIFOs(1Kx9同步先進先出（FIFO）) |
| CY7C4241 | 4K x 9 Synchronous FIFOs(4Kx9同步先進先出（FIFO）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C4235-10AC | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Depth/Width Uni-Dir 2K x 18 64-Pin TQFP |
| CY7C4235-15AC | 功能描述:IC SYNC FIFO MEM 2KX18 64LQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:CY7C 標(biāo)準(zhǔn)包裝:15 系列:74F 功能:異步 存儲容量:256（64 x 4） 數(shù)據(jù)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(yīng)商設(shè)備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| CY7C4235-15ACT | 制造商:Cypress Semiconductor 功能描述:FIFO Mem Sync Dual Depth/Width Uni-Dir 2K x 18 64-Pin TQFP T/R |
| CY7C4235-15AXC | 功能描述:IC SYNC FIFO MEM 2KX18 64LQFP RoHS:是 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:CY7C 標(biāo)準(zhǔn)包裝:15 系列:74F 功能:異步 存儲容量:256（64 x 4） 數(shù)據(jù)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(yīng)商設(shè)備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| CY7C4235-15AXCT | 功能描述:IC SYNC FIFO MEM 2KX18 64LQFP RoHS:是 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:CY7C 標(biāo)準(zhǔn)包裝:15 系列:74F 功能:異步 存儲容量:256（64 x 4） 數(shù)據(jù)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(yīng)商設(shè)備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
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