參數(shù)資料
型號(hào): IDT72235LB35J
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): DRAM
英文描述: CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
中文描述: 2K X 18 OTHER FIFO, PQCC68
封裝: 0.050 INCH PITCH, PLASTIC, LCC-68
文件頁(yè)數(shù): 15/16頁(yè)
文件大?。?/td> 181K
代理商: IDT72235LB35J
8
IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
Commercial And Industrial Temperature Ranges
After half of the memory is filled, and at the LOW-to-HIGH
transition of the next write cycle, the Half-Full Flag goes LOW
and will remain set until the difference between the write
pointer and read pointer is less than or equal to one half of the
total memory of the device. The Half-Full Flag (
HF) is then
reset to HIGH by the LOW-to-HIGH transition of the read clock
(RCLK). The
HF is asynchronous.
In the Daisy Chain Depth Expansion mode,
WXI is connected
to
WXOof the previous device. This output acts as a signal to the
next device in the Daisy Chain by providing a pulse when the
previous device writes to the last location of memory.
READ EXPANSION OUT (
RXO
RXO)
In the Daisy Chain Depth Expansion configuration, Read
Expansion In (
RXI) is connected to Read Expansion Out (RXO)
of the previous device. This output acts as a signal to the next
device in the Daisy Chain by providing a pulse when the
previous device reads from the last location of memory.
DATA OUTPUTS (Q0-Q17)
Q0-Q17 are data outputs for 18-bit wide data.
,
t
RSF
RS
RSR
Q0 - Q17
t RSF
= 0
= 1
(1)
2766 drw 06
tRSS
NOTES:
1. After reset, the outputs will be LOW if
OE = 0 and tri-state if OE = 1.
2. The clocks (RCLK, WCLK) can be free-running during reset.
Figure 4. Reset Timing(2)
相關(guān)PDF資料
PDF描述
IDT72235LB35JB CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB35PF CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
IDT72235LB35PFB High Voltage Fast Switching NPN Power Transistor
IDT72235LB35TF High Voltage Fast Switching NPN Power Transistor
IDT72235LB35TFB CMOS SyncFIFOO 256 x 18, 512 x 18, 1024 x 18, 2048 x 18 and 4096 x 18
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