參數(shù)資料
型號： SN74ABT7819A-20PH
廠商： Texas Instruments, Inc.
英文描述： 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
中文描述： 512】18】2時鐘雙向先入先出存儲器
文件頁數(shù)： 6/21頁
文件大?。?/td> 324K
代理商： SN74ABT7819A-20PH
SN74ABT7819A
512
×
18
×
2
CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SCBS756
–
MAY 2002
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
enable logic diagram (positive logic)
CSA
W/RA
WENA
RENA
WEN FIFOA
–
B
A0
–
A17 (output enable)
REN FIFOB
–
A
CSB
W/RB
WENB
RENB
WEN FIFOB
–
A
B0
–
B17 (output enable)
REN FIFOA
–
B
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
A0
–
A17
7, 8, 10, 11,
13, 14, 16, 17,
19, 20, 22, 23,
25, 26, 28, 29,
31, 32
I/O
Port-A data. The 18-bit bidirectional data port for side A.
AF/AEA
3
O
FIFOA
–
B almost-full/almost-empty flag. Depth offsets can be programmed for AF/AEA or the default
value of 128 can be used for both the almost-empty offset (X) and the almost-full offset (Y). AF/AEA is
high when X or fewer words or (512
–
Y) or more words are stored in FIFOA
–
B. AF/AEA is forced high
when FIFOA
–
B is reset.
AF/AEB
62
O
FIFOB
–
A almost-full/almost-empty flag. Depth offsets can be programmed for AF/AEB or the default
value of 128 can be used for both the almost-empty offset (X) and the almost-full offset (Y). AF/AEB is
high when X or fewer words or (512
–
Y) or more words are stored in FIFOB
–
A. AF/AEB is forced high
when FIFOB
–
A is reset.
B0
–
B17
58, 57, 55, 54,
52, 51, 49, 48,
46, 45, 43, 42,
40, 39, 37, 36,
34, 33
I/O
Port-B data. The 18-bit bidirectional data port for side B.
CLKA
76
I
Port-A clock. CLKA is a continuous clock that synchronizes all data transfers through port A to its
low-to-high transition and can be asynchronous or coincident to CLKB.
CLKB
69
I
Port-B clock. CLKB is a continuous clock that synchronizes all data transfers through port B to its
low-to-high transition and can be asynchronous or coincident to CLKA.
CSA
80
I
Port-A chip select. CSA must be low to enable a low-to-high transition of CLKA to either write data from
A0
–
A17 to FIFOA
–
B or read data from FIFOB
–
A to A0
–
A17. The A0
–
A17 outputs are in the
high-impedance state when CSA is high.
CSB
65
I
Port-B chip select. CSB must be low to enable a low-to-high transition of CLKB to either write data from
B0
–
B17 to FIFOB
–
A or read data from FIFOA
–
B to B0
–
B17. The B0
–
B17 outputs are in the
high-impedance state when CSB is high.
Terminal numbers are for the PH package.
相關(guān)PDF資料
PDF描述
SN74ABT7819A-30PH 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SN74ABT7819A-30PN 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SN74ABT7819A-10PH 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SN74ABT7819A-10PN 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SN74ABT7819A-12PH 512 】 18 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74ABT7819A-20PN 功能描述:先進先出 512x18x2 Clocked Bidir Mem 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:
SN74ABT7819A-30PH 功能描述:特定功能邏輯 512x18x2 Clocked Bidir Mem RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
SN74ABT7819A-30PN 功能描述:特定功能邏輯 512x18x2 Clocked Bidir Mem RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube
SN74ABT7820-15N 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
SN74ABT7820-15PH 功能描述:先進先出 512 x 18 x 2 bidir ASynch 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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