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參數資料
| 型號： | CYDC256B16-55AXC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 1.8V 4k/8k/16k x 16 and 8k/16k x 8 ConsuMoBL Dual-Port Static RAM |
| 中文描述： | 16K X 16 DUAL-PORT SRAM, 55 ns, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, TQFP-100 |
| 文件頁數： | 19/26頁 |
| 文件大?。?/td> | 580K |
| 代理商： | CYDC256B16-55AXC |
CYDC256B16, CYDC128B16,
CYDC064B16, CYDC128B08,
CYDC064B08
Document #: 001-01638 Rev. *E
Page 19 of 26
Write Cycle No.1: R/W Controlled Timing
[41, 42, 43, 44, 45, 46]
Write Cycle No. 2: CE Controlled Timing
[41, 42, 43, 48]
Notes:
43.t
is measured from the earlier of CE or R/W or (SEM or R/W) going HIGH at the end of write cycle.
44.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
.
45.To access RAM, CE = V
, SEM = V
.
46.To access upper byte, CE = V
IL
, UB = V
IL
, SEM = V
IH
.
To access lower byte, CE = V
, LB = V
, SEM = V
.
47.Transition is measured
±
0 mV from steady state with a 5-pF load (including scope and jig). This parameter is sampled and not 100% tested.
48.During this period, the I/O pins are in the output state, and input signals must not be applied.
Switching Waveforms
(continued)
t
AW
t
WC
t
PWE
t
HD
t
SD
t
HA
CE
R/W
OE
DATA OUT
DATA IN
ADDRESS
t
HZOE
t
SA
t
HZWE
t
LZWE
[47]
[47]
[44]
[45, 46]
NOTE 48
NOTE 48
t
AW
t
WC
t
SCE
t
HD
t
SD
t
HA
CE
R/W
DATA IN
ADDRESS
t
SA
[45, 46]
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| CYDC256B16-55AXI | 功能描述:靜態(tài)隨機存取存儲器 256K 16Kx16 Consumer Hi Vol Dual Port 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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| CYDD04S18V18-167BBXC | 功能描述:靜態(tài)隨機存取存儲器 4M Sync Dual Port 128Kx36 90nm DDR 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 |
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