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參數(shù)資料
| 型號： | CY7C025AV-25AC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 3.3V 4K/8K/16K x 16/18 Dual-Port Static RAM |
| 中文描述： | 8K X 16 DUAL-PORT SRAM, 25 ns, PQFP100 |
| 封裝： | PLASTIC, MS-026, TQFP-100 |
| 文件頁數(shù)： | 12/19頁 |
| 文件大小： | 241K |
| 代理商： | CY7C025AV-25AC |
CY7C024AV/025AV/026AV
CY7C0241AV/0251AV/036AV
Document #: 38-06052 Rev. *E
Page 12 of 19
Notes:
32. R/W must be HIGH during all address transitions.
33. A write occurs during the overlap (t
or t
) of a LOW CE or SEM and a LOW UB or LB.
34. t
is measured from the earlier of CE or R/W or (SEM or R/W) going HIGH at the end of write cycle.
35. If OE is LOW during a R/W controlled write cycle, the write pulse width must be the larger of t
or (t
+ t
) to allow the I/O drivers to turn off and data to be placed on
the bus for the required t
SD
. If OE is HIGH during an R/W controlled write cycle, this requirement does not apply and the write pulse can be as short as the specified t
PWE
.
36. To access RAM, CE = V
, SEM = V
.
37. To access upper byte, CE = V
, UB = V
, SEM = V
IH
.
To access lower byte, CE = V
, LB = V
, SEM = V
.
38. Transition is measured
±
500 mV from steady state with a 5-pF load (including scope and jig). This parameter is sampled and not 100% tested.
39. During this period, the I/O pins are in the output state, and input signals must not be applied.
40. If the CE or SEM LOW transition occurs simultaneously with or after the R/W LOW transition, the outputs remain in the high-impedance state.
Switching Waveforms
(continued)
t
AW
t
WC
t
PWE
t
HD
t
SD
t
HA
CE
R/W
OE
DATAOUT
DATA IN
ADDRESS
t
HZOE
t
SA
t
HZWE
t
LZWE
Write Cycle No.1: R/W Controlled Timing
[32, 33, 34, 35]
[38]
[38]
[35]
[36, 37]
NOTE 39
NOTE 39
t
AW
t
WC
t
SCE
t
HD
t
SD
t
HA
CE
R/W
DATA IN
ADDRESS
t
SA
Write Cycle No. 2: CE Controlled Timing
[32, 33, 34, 40]
[36, 37]
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| CY7C1360B-166AC | CONNECTOR ACCESSORY |
| CY7C1360B-166AI | CONNECTOR ACCESSORY |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C025AV-25ACKJ | 制造商:Cypress Semiconductor 功能描述: |
| CY7C025AV-25AI | 制造商:Rochester Electronics LLC 功能描述:3.3V 8K X 16 DPSRAM - Bulk |
| CY7C025AV-25AIT | 制造商:Cypress Semiconductor 功能描述: |
| CY7C025AV-25AXC | 功能描述:靜態(tài)隨機存取存儲器 3.3V 8Kx16 COM Async Dual Port 靜態(tài)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 |
| CY7C025AV-25AXCT | 功能描述:靜態(tài)隨機存取存儲器 3.3V 8Kx16 COM Async Dual Port 靜態(tài)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 |
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