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| 型号： | M4A5-96/48-7VC |
| 厂商： | LATTICE SEMICONDUCTOR CORP |
| 元件分类： | PLD |
| 英文描述： | High Performance E 2 CMOS In-System Programmable Logic |
| 中文描述： | EE PLD, 7.5 ns, PQFP100 |
| 封装： | TQFP-100 |
| 文件页数： | 9/62页 |
| 文件大小： | 1078K |
| 代理商： | M4A5-96/48-7VC |
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ispMACH 4A Family
17
I/O Cell
The I/O cell (Figures 10 and 11) simply consists of a programmable output enable, a feedback path, and
flip-flop (except ispMACH 4A devices with 1:1 macrocell-I/O cell ratio). An individual output enable
product term is provided for each I/O cell. The feedback signal drives the input switch matrix.
The I/O cell (Figure 10) contains a flip-flop, which provides the capability for storing the input in a D-type
register or latch. The clock can be any of the PAL block clocks. Both the direct and registered versions of
the input are sent to the input switch matrix. This allows for such functions as “time-domain-multiplexed”
data comparison, where the first data value is stored, and then the second data value is put on the I/O pin
and compared with the previous stored value.
Note that the flip-flop used in the ispMACH 4A I/O cell is independent of the flip-flops in the macrocells.
It powers up to a logic low.
Zero-Hold-Time Input Register
The ispMACH 4A devices have a zero-hold-time (ZHT) fuse which controls the time delay associated with
loading data into all I/O cell registers and latches. When programmed, the ZHT fuse increases the data path
setup delays to input storage elements, matching equivalent delays in the clock path. When the fuse is erased,
the setup time to the input storage element is minimized. This feature facilitates doing worst-case designs
for which data is loaded from sources which have low (or zero) minimum output propagation delays from
clock edges.
D/L
Q
Block CLK3
Block CLK2
Block CLK1
Block CLK0
To Input
Switch
Matrix
Individual
Output Enable
Product Term
From Output
Switch Matrix
17466G-017
17466G-018
Figure 10. I/O Cell for ispMACH 4A Devices with 2:1
Macrocell-I/O Cell Ratio
Figure 11. I/O Cell for ispMACH 4A Devices with 1:1
Macrocell-I/O Cell Ratio
To Input
Switch
Matrix
Individual
Output Enable
Product Term
From Output
Switch Matrix
Power-up reset
相关PDF资料 |
PDF描述 |
|---|---|
| M4A5-96/48-7VI | High Performance E 2 CMOS In-System Programmable Logic |
| M4A3-128/64-12VI | High Performance E 2 CMOS In-System Programmable Logic |
| M4A3-128/64-12YI | High Performance E 2 CMOS In-System Programmable Logic |
| M4A3-128/64-55CAC | High Performance E 2 CMOS In-System Programmable Logic |
| M4A3-128/64-55VC | High Performance E 2 CMOS In-System Programmable Logic |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M4A9 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:MEDIUM CURRENT SILICON RECTIFIERS |
| M4ADHD | 制造商:Brady Corporation 功能描述:SIGN EYE PROTECTION MUST BE WORN 制造商:Brady Corporation 功能描述:SIGN, EYE PROTECTION MUST BE WORN 制造商:Brady Corporation 功能描述:SIGN, EYE PROTECTION MUST BE WORN; External Width:125mm; Sign Colour:Blue on White; Sign Type:Eye Protection; Sign Legend:Eye Protection Must Be Worn; Sign Material:Vinyl ;RoHS Compliant: NA |
| M4ADHG | 制造商:Brady Corporation 功能描述:SIGN EYE PROTECTION MUST BE WORN |
| M-4A-S | 制造商:Excelta Corporation 功能描述:THREE STAR MINITURE TWEEZER 3-1/2 " 制造商:Excelta Corporation 功能描述:THREE STAR MINITURE TWEEZER, 3-1/2 " 制造商:Excelta Corporation 功能描述:THREE STAR MINITURE TWEEZER, 3-1/2 ", Tweezer Type:Fine, Overall Length:3.5", Tweezer Body Material:Stainless Steel, Tweezer Tip Material:Stainless Steel , RoHS Compliant: NA 制造商:Excelta Corporation 功能描述:Tweezer - Straight Very Fine - Miniature - Three Star 3.5" Stainless Steel |
| M4b | 制造商:M/A-COM Technology Solutions 功能描述:RF MIXER |
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