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參數(shù)資料
| 型號： | SN74ACT7806DL |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 256 】 18 STROBED FIRST-IN, FIRST-OUT MEMORY |
| 中文描述： | 256】18選通先入先出存儲器 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 137K |
| 代理商： | SN74ACT7806DL |
SN74ACT7806
256
×
18
STROBED FIRST-IN, FIRST-OUT MEMORY
SCAS438C – APRIL 1992 – REVISED APRIL 1998
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
offset values for AF/AE
The AF/AE flag has two programmable limits, the almost-empty offset value (X) and the almost-full offset
value (Y). They can be programmed after the FIFO is reset and before the first word is written to memory. The
AF/AE flag is high when the FIFO contains X or fewer words or (256 – Y) or more words.
To program the offset values, PEN can be brought low after reset only when LDCK is low. On the following
low-to-high transition of LDCK, the binary value on D0–D6 is stored as the almost-empty offset value (X) and
the almost-full offset value (Y). Holding PEN low for another low-to-high transition of LDCK reprograms Y to the
binary value on D0–D6 at the time of the second LDCK low-to-high transition. Writes to the FIFO memory are
disabled while the offsets are programmed. A maximum value of 127 can be programmed for either X or Y (see
Figure 1). To use the default values of X = Y = 32, PEN must be held high.
ììììì
ììììì
RESET
X and Y
Y
PEN
D0–D6
EMPTY
LDCK
Figure 1. Programming X and Y Separately
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PDF描述 |
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| SN74ACT7807FN | 2048 】 9 CLOCKED FIRST-IN, FIRST-OUT MEMORY |
| SN74ACT7807PM | Low-Voltage CMOS Octal D-Type Flip-Flop Flow Through Pinout; Package: SOIC-20 WB; No of Pins: 20; Container: Tape and Reel; Qty per Container: 1000 |
| SN74ACT7807PAG | 2048 】 9 CLOCKED FIRST-IN, FIRST-OUT MEMORY |
| SN74AHC00DB | Circular Connector; No. of Contacts:79; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:21; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:21-35 RoHS Compliant: No |
| SN74AHC00DGV | Circular Connector; No. of Contacts:79; Series:MS27468; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:21; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:21-35 RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ACT7807-15FN | 功能描述:先進先出 2048 x 9 synchronous 先進先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7807-15PAG | 功能描述:先進先出 2048 x 9 synchronous 先進先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7807-20FN | 功能描述:先進先出 2048 x 9 synchronous 先進先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7807-20PAG | 功能描述:先進先出 2048 x 9 synchronous 先進先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7807-25FN | 功能描述:先進先出 2048 x 9 synchronous 先進先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
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