参数资料
型号: EPM7256AETI144-7N
厂商: Altera
文件页数: 2/64页
文件大小: 0K
描述: IC MAX 7000 CPLD 256 144-TQFP
产品变化通告: Bond Wire Change 4/Sept/2008
标准包装: 180
系列: MAX® 7000A
可编程类型: 系统内可编程
最大延迟时间 tpd(1): 7.5ns
电压电源 - 内部: 3 V ~ 3.6 V
逻辑元件/逻辑块数目: 16
宏单元数: 256
门数: 5000
输入/输出数: 120
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 144-LQFP
供应商设备封装: 144-TQFP(20x20)
包装: 托盘
其它名称: 544-2063
EPM7256AETI144-7N-ND
10
Altera Corporation
MAX 7000A Programmable Logic Device Data Sheet
Expander Product Terms
Although most logic functions can be implemented with the five product
terms available in each macrocell, more complex logic functions require
additional product terms. Another macrocell can be used to supply the
required logic resources. However, the MAX 7000A architecture also
offers both shareable and parallel expander product terms that provide
additional product terms directly to any macrocell in the same LAB. These
expanders help ensure that logic is synthesized with the fewest possible
logic resources to obtain the fastest possible speed.
Shareable Expanders
Each LAB has 16 shareable expanders that can be viewed as a pool of
uncommitted single product terms (one from each macrocell) with
inverted outputs that feed back into the logic array. Each shareable
expander can be used and shared by any or all macrocells in the LAB to
build complex logic functions. A small delay (tSEXP) is incurred when
shareable expanders are used. Figure 3 shows how shareable expanders
can feed multiple macrocells.
Figure 3. MAX 7000A Shareable Expanders
Shareable expanders can be shared by any or all macrocells in an LAB.
Macrocell
Product-Term
Logic
Product-Term Select Matrix
Macrocell
Product-Term
Logic
36 Signals
from PIA
16 Shared
Expanders
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