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參數資料
| 型號： | CYD18S18V18 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 18-Mb/9-Mb/4-Mb x36/x18 FullFlex⑩ Dual-Ports |
| 中文描述： | 18-Mb/9-Mb/4-Mb x36/x18 FullFlex器件⑩雙端口 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 51K |
| 代理商： | CYD18S18V18 |
ERRATA DOCUMENT
Errata Revision: **
CONFIDENTIAL
March 15, 2006
Errata Document for CYDxxS36V18/CYDxxS18V18 18-Mb/9-Mb/4-Mb x36/x18 FullFlex Dual-Ports
CYDxxS36V18
CYDxxS18V18
Cypress Semiconductor Corporation
198 Champion Court
San Jose
,
CA 95134-1709
408-943-2600
Document #: 001-07077 Rev. **
Revised March 28, 2006
This document describes the errata for the 18Mb/9Mb/4Mb x36/x18 FullFlex Dual-Ports (CYDxxS36V18/CYDxxS18V18).
Details include errata trigger conditions, available workarounds, and silicon revision applicability. This document should be used
to compare to the data sheet for this device to fully describe the device functionality. Please contact your local Cypress Sales
Representative if you have further questions.
Part Numbers Affected
18-Mb/9-Mb/4-Mb x36/x18 FullFlex
Dual-Ports Errata Summary
The ZQ0 and ZQ1 pins on both ports (left and right) are internally shorted in the 256-Ball FBGA package substrate design. This
creates an error in the Variable Impedance Matching (VIM) feature on the FullFlex Dual-Ports, as the effective output driver
impedance is halved when both resistors are populated. The workaround is to remove the resistors on ZQ1L and ZQ1R for the
affected devices.
Variable Impedance Matching (VIM)
PROBLEM DEFINITION
The 256-Ball FBGA package substrate design has the ZQ0L pin shorted to ZQ1L and ZQ0R shorted to ZQ1R. The ZQ1L and
ZQ1R pins are not internally connected to the die for the affected devices; therefore, when resistors are connected to these
pins to ground, the effective output driver impedance for each port is halved.
PARAMETERS AFFECTED
Effective output driver impedance controlled by the VIM circuitry.
TRIGGER CONDITION(S)
If the designer populates resistors for both ZQ0 and ZQ1, the short between ZQ0 and ZQ1 halves the effective impedance
seen by the VIM calibrating circuitry.
SCOPE OF IMPACT
Output driver impedance is halved, as the two VIM calibrating resistors are in parallel to ground.
WORKAROUND
Remove ZQ1L and ZQ1R VIM resistors. Disconnecting these two resistors and leaving the pins open allow the calibrating
circuitry to set the correct output driver impedance.
FIX STATUS
The date for the substrate design fix is TBD.
References
1. Document # 38-06072, FullFlex Synchronous DDR Dual-Port SRAM
2. Document # 38-06082, FullFlex Synchronous SDR Dual-Port SRAM
Part Number
CYD18S36V18
CYD09S36V18
CYD04S36V18
CYD18S18V18
CYD09S18V18
CYD04S18V18
Package
256-Ball FBGA
256-Ball FBGA
256-Ball FBGA
256-Ball FBGA
256-Ball FBGA
256-Ball FBGA
Device Characteristics
All speed grades
All speed grades
All speed grades
All speed grades
All speed grades
All speed grades
Product Status
Sampling
Sampling
Sampling
Sampling
Sampling
Sampling
相關PDF資料 |
PDF描述 |
|---|---|
| CYD18S36V18 | 18-Mb/9-Mb/4-Mb x36/x18 FullFlex⑩ Dual-Ports |
| CYD18S72V-100BBXC | FLEx72⑩ 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM |
| CYD18S72V-100BBXI | FLEx72⑩ 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM |
| CYD18S72V-133BBI | FLEx72⑩ 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM |
| CYD18S72V-133BBXC | FLEx72⑩ 3.3V 64K/128K/256K x 72 Synchronous Dual-Port RAM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CYD18S18V18-167BBAXC | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CYD18S18V18-167BBAXI | 功能描述:靜態隨機存取存儲器 18432KB (1Mx18) 1.8v 200MHz Sync 靜態隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| CYD18S18V18-167BBC | 制造商:Cypress Semiconductor 功能描述: 制造商:Cypress Semiconductor 功能描述:SRAM SYNC DUAL 1.8V 18MBIT 1MX18 11NS/6NS 256FBGA - Bulk |
| CYD18S18V18-167BBXC | 功能描述:靜態隨機存取存儲器 18M Sync Dual Port 1Mx18 90nm SDR COM RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| CYD18S18V18-167BBXI | 功能描述:靜態隨機存取存儲器 18M Sync Dual Port 1Mx18 90nm SDR IND RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
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