参数资料
型号: IDT72V261LA20PF8
厂商: IDT, Integrated Device Technology Inc
文件页数: 26/27页
文件大小: 0K
描述: IC FIFO SS 8192X18 20NS 64QFP
标准包装: 750
系列: 72V
功能: 同步
存储容量: 144K(8K x 18)
数据速率: 50MHz
访问时间: 20ns
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(14x14)
包装: 带卷 (TR)
其它名称: 72V261LA20PF8
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V261LA/72V271LA
3.3 VOLT CMOS SuperSync FIFO 16,384 x 9 and 32,768 x 9
8
JANUARY 30, 2009
IDT72V271LA
FF PAF HF PAE EF
00
L
H
L
H
1 to n+1 (1)
LH
H
L
(n + 2) to 8,193
(n + 2) to 16,385
L
H
L
8,194 to (16,385-(m+1))(2)
16,386 to (32,769-(m+1)) (2)
LH
L
H
L
(16,385-m) to 16,384
(32,769-m) (2) to 32,768
L
H
L
16,385
32,769
H
L
H
L
IDT72V261LA
FF PAF HF PAE EF
00
H
L
1 to n (1)
HH
H
L
H
(n + 1) to 8,192
(n + 1) to 16,384
H
8,193 to (16,384-(m+1))
16,385 to (32,768-(m+1))
HH
L
H
(16,384-m)(2) to 16,383
(32,768-m) (2) to 32,767
H
L
H
16,384
32,768
L
H
NOTES:
1. n = Empty Offset, Default Values: n = 127 when parallel offset loading is selected or n = 1,023 when serial offset loading is selected.
2. m = Full Offset, Default Values: m = 127 when parallel offset loading is selected or m = 1,023 when serial offset loading is selected.
NOTES:
1. n = Empty Offset, Default Values: n = 127 when parallel offset loading is selected or n = 1,023 when serial offset loading is selected.
2. m = Full Offset, Default Values: m = 127 when parallel offset loading is selected or m = 1,023 when serial offset loading is selected.
PROGRAMMING FLAG OFFSETS
Full and Empty Flag offset values are user programmable. The
IDT72V261LA/72V271LA has internal registers for these offsets. De-
fault settings are stated in the footnotes of Table 1 and Table 2. Offset
values can be programmed into the FIFO in one of two ways; serial or
parallel loading method. The selection of the loading method is done
using the
LD (Load) pin. During Master Reset, the state of the LD input
determines whether serial or parallel flag offset programming is en-
abled. A HIGH on
LD during Master Reset selects serial loading of
offset values and in addition, sets a default
PAE offset value of 3FFH (a
threshold 1,023 words from the empty boundary), and a default
PAF
offset value of 3FFH (a threshold 1,023 words from the full boundary).
A LOW on
LD during Master Reset selects parallel loading of offset
values, and in addition, sets a default
PAE offset value of 07FH (a
threshold 127 words from the empty boundary), and a default
PAF
offset value of 07FH (a threshold 127 words from the full boundary).
See Figure 3, Offset Register Location and Default Values.
In addition to loading offset values into the FIFO, it also possible to read
the current offset values. It is only possible to read offset values via parallel
read.
Figure 4, Programmable Flag Offset Programming Sequence, summa-
rizes the control pins and sequence for both serial and parallel program-
ming modes. For a more detailed description, see discussion that follows.
The offset registers may be programmed (and reprogrammed) any time
after Master Reset, regardless of whether serial or parallel programming
has been selected.
TABLE 1 — STATUS FLAGS FOR IDT STANDARD MODE
TABLE 2 — STATUS FLAGS FOR FWFT MODE
Number of
Words in
FIFO
Number of
Words in
FIFO (1)
相关PDF资料
PDF描述
IDT72V255LA20PF8 IC FIFO SS 8192X18 20NS 64-TQFP
VI-262-IW-F4 CONVERTER MOD DC/DC 15V 100W
IDT72261LA20PF8 IC FIFO 8192X18 LP 20NS 64QFP
MS27466E15F15P CONN RCPT 15POS WALL MT W/PINS
VI-262-IW-F3 CONVERTER MOD DC/DC 15V 100W
相关代理商/技术参数
参数描述
IDT72V261LA20TF 功能描述:IC FIFO SS 8192X18 20NS 64QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF
IDT72V261LA20TF8 功能描述:IC FIFO SS 8192X18 20NS 64QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF
IDT72V263L10PF 功能描述:IC FIFO 8192X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF
IDT72V263L10PF8 功能描述:IC FIFO 8192X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF
IDT72V263L10PFI 功能描述:IC FIFO 8192X18 10NS 80QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF