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參數(shù)資料
| 型號： | IDT72285L15TF |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 19/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FIFO 65536X18 LP 15NS 64STQFP |
| 標準包裝： | 80 |
| 系列： | 7200 |
| 功能： | 同步 |
| 存儲容量： | 1.1M（65K x 18） |
| 訪問時間： | 15ns |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應商設備封裝： | 64-TQFP（10x10） |
| 包裝： | 托盤 |
| 其它名稱： | 72285L15TF |
3
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72275/72285
CMOS SuperSync FIFO 32,768 x 18 and 65,536 x 18
DESCRIPTION (CONTINUED)
Figure 1. Block Diagram of Single 32,768 x 18 and 65,536 x 18 Synchronous FIFO
DATA OUT (Q0 - Qn)
DATA IN (D0 - Dn)
MASTER RESET (
MRS)
READ CLOCK (RCLK)
READ ENABLE (
REN)
OUTPUT ENABLE (
OE)
EMPTY FLAG/OUTPUT READY (
EF/OR)
PROGRAMMABLE ALMOST-EMPTY (
PAE)
WRITE CLOCK (WCLK)
WRITE ENABLE (
WEN)
LOAD (
LD)
FULL FLAG/INPUT READY (
FF/IR)
PROGRAMMABLE ALMOST-FULL (
PAF)
IDT
72275
72285
PARTIAL RESET (
PRS)
FIRST WORD FALL THROUGH/SERIAL INPUT
(FWFT/SI)
RETRANSMIT (
RT)
4674 drw 03
HALF FULL FLAG (
HF)
SERIAL ENABLE(
SEN)
PAE and PAF can be programmed independently to switch at any point in
memory. (SeeTableIandTableII.) Programmableoffsetsdeterminetheflag
switchingthresholdandcanbeloadedbytwomethods:parallelorserial. Two
defaultoffsetsettingsarealsoprovided,sothatPAEcanbesettoswitchat127
or1,023locationsfromtheemptyboundaryandthePAFthresholdcanbeset
at127or1,023locationsfromthefullboundary. Thesechoicesaremadewith
the LD pin during Master Reset.
For serial programming, SEN together with LD on each rising edge of
WCLK, are used to load the offset registers via the Serial Input (SI). For
parallel programming, WEN together with LD on each rising edge of WCLK,
are used to load the offset registers via Dn. REN together with LD on each
rising edge of RCLK can be used to read the offsets in parallel from Qn
regardless of whether serial or parallel offset loading has been selected.
During Master Reset (MRS) the following events occur: The read and
write pointers are set to the first location of the FIFO. The FWFT pin selects
IDT Standard mode or FWFT mode. The LD pin selects either a partial flag
defaultsettingof127withparallelprogrammingorapartialflagdefaultsetting
of1,023withserialprogramming. Theflagsareupdatedaccordingtothetiming
modeanddefaultoffsetsselected.
The Partial Reset (PRS) also sets the read and write pointers to the first
location of the memory. However, the timing mode, partial flag program-
ming method, and default or programmed offset settings existing before
Partial Reset remain unchanged. The flags are updated according to the
timing mode and offsets in effect. PRS is useful for resetting a device in mid-
operation, when reprogramming partial flags would be undesirable.
The Retransmit function allows data to be reread from the FIFO more
than once. A LOW on the RT input during a rising RCLK edge initiates a
retransmit operation by setting the read pointer to the first location of the
memory array.
If, at any time, the FIFO is not actively performing an operation, the chip
will automatically power down. Once in the power down state, the standby
supply current consumption is minimized. Initiating any operation (by
activating control inputs) will immediately take the device out of the power
down state.
The IDT72275/72285 are fabricated using high speed submicron CMOS
technology.
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| IDT72285L15TF8 | 功能描述:IC FIFO 65536X18 LP 15NS 64STQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標準包裝: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） 供應商設備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| IDT72285L15TFI | 功能描述:IC FIFO 65536X18 LP 15NS 64STQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標準包裝: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） 供應商設備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| IDT72285L15TFI8 | 功能描述:IC FIFO 65536X18 LP 15NS 64STQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標準包裝: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） 供應商設備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
| IDT72285L20PF | 功能描述:IC FIFO 65536X18 LP 20NS 64-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標準包裝:90 系列:74ABT 功能:同步，雙端口 存儲容量:4.6K（64 x 36 x2） 數(shù)據(jù)速率:67MHz 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:表面貼裝 封裝/外殼:120-LQFP 裸露焊盤 供應商設備封裝:120-HLQFP（14x14） 包裝:托盤 產(chǎn)品目錄頁面:1005 (CN2011-ZH PDF) 其它名稱:296-3984 |
| IDT72285L20PF8 | 功能描述:IC FIFO 65536X18 LP 20NS 64-TQFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:7200 標準包裝: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） 供應商設備封裝:24-PDIP 包裝:管件 其它名稱:74F433 |
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