参数资料
型号: SN74V263-10GGM
厂商: Texas Instruments, Inc.
英文描述: 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
中文描述: 8192】18,16384】18,32768】18,65536】18的3.3V的CMOS先入先出存储器
文件页数: 20/52页
文件大小: 762K
代理商: SN74V263-10GGM
SN74V263, SN74V273, SN74V283, SN74V293
8192
×
18, 16384
×
18, 32768
×
18, 65536
×
18
3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SCAS669D
JUNE 2001
REVISED FEBRUARY 2003
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Table 2. Default Programmable Flag Offsets
OFFSETS (n, m)
OFFSETS (n, m)
LD
FSEL0
FSEL1
SN74V263
SN74V273
LD
FSEL0
FSEL1
SN74V283
ALL OTHER
MODES
×
9 TO
×
9
MODE
SN74V293
H
L
L
L
L
H
H
H
L
L
H
L
H
L
H
H
L
H
L
L
H
H
L
H
1,023
511
255
127
63
31
15
7
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
H
L
H
H
L
L
H
L
511
255
63
31
1,023
15
7
127
16383
8191
4,095
2,047
1,023
511
255
127
16383
8191
4,095
2,047
1,023
511
255
127
n = empty offset for PAE, m = full offset for PAF
programming flag offsets
Full and empty flag offset values are user programmable. The SN74V263, SN74V273, SN74V283, and
SN74V293 have internal registers for these offsets. Eight default offset values are selectable during master
reset. These offset values are shown in Table 2. Offset values also can be programmed into the FIFO by serial
or parallel loading. The loading method is selected using LD. During master reset, the state of the LD input
determines whether serial or parallel flag offset programming is enabled. A high on LD during master reset
selects serial loading of offset values. A low on LD during master reset selects parallel loading of offset values.
In addition to loading offset values into the FIFO, it also is possible to read the current offset values. Offset values
can be read via the parallel output ports Q0
Qn, regardless of the programming mode selected (serial or
parallel). It is not possible to read the offset values in serial fashion.
Figure 3 summarizes the control pins and sequence for both serial and parallel programming modes. A more
detailed description is given in the following paragraphs.
The offset registers can be programmed (and reprogrammed) any time after master reset, regardless of whether
serial or parallel programming has been selected. Valid programming ranges are from 0 to D
1.
synchronous vs asynchronous programmable-flag timing selection
The SN74V263, SN74V273, SN74V283, and SN74V293 can be configured during the master reset cycle with
either synchronous or asynchronous timing for PAF and PAE flags by use of the PFM pin.
If synchronous PAF/PAE configuration is selected (PFM high during MRS), PAF is asserted and updated on the
rising edge of WCLK only and not RCLK. Similarly, PAE is asserted and updated on the rising edge of RCLK
only and not WCLK (see Figure 18 for synchronous PAF timing and Figure 19 for synchronous PAE timing).
If asynchronous PAF/PAE configuration is selected (PFM low during MRS), PAF is asserted low on the
low-to-high transition of WCLK and PAF is reset to high on the low-to-high transition of RCLK. Similarly, PAE
is asserted low on the low-to-high transition of RCLK. PAE is reset to high on the low-to-high transition of WCLK
(see Figure 20 for asynchronous PAF timing and Figure 21 for asynchronous PAE timing).
相关PDF资料
PDF描述
SN74V263-15GGM 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SN74V263-7GGM 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SN74V273-10GGM 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SN74V273-15GGM 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
SN74V273-6GGM 8192 】 18, 16384 】 18, 32768 】 18, 65536 】 18 3.3-V CMOS FIRST-IN, FIRST-OUT MEMORIES
相关代理商/技术参数
参数描述
SN74V263-10PZA 功能描述:先进先出 8192 x 18 Synch 先进先出 Memory RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装:
SN74V263-15GGM 功能描述:先进先出 8192 x 18 Synch 先进先出 Memory RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装:
SN74V263-15PZA 功能描述:先进先出 8192 x 18 Synch 先进先出 Memory RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装:
SN74V263-6GGM 功能描述:先进先出 8192 x 18 Synch 先进先出 Memory RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装:
SN74V263-6PZA 功能描述:先进先出 8192 x 18 Synch 先进先出 Memory RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装: