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| 型号： | EPM7064BTC44-7 |
| 厂商： | ALTERA CORP |
| 元件分类： | PLD |
| 英文描述： | EE PLD, 3.5 ns, PQFP44 |
| 封装： | TQFP-44 |
| 文件页数： | 2/66页 |
| 文件大小： | 962K |
| 代理商： | EPM7064BTC44-7 |
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10
Altera Corporation
MAX 7000B Programmable Logic Device Data Sheet
Parallel Expanders
Parallel expanders are unused product terms that can be allocated to a
neighboring macrocell to implement fast, complex logic functions.
Parallel expanders allow up to 20 product terms to directly feed the
macrocell OR logic, with five product terms provided by the macrocell and
15 parallel expanders provided by neighboring macrocells in the LAB.
The Altera Compiler can automatically allocate up to three sets of up to
five parallel expanders to the macrocells that require additional product
terms. Each set of five parallel expanders incurs a small, incremental
timing delay (tPEXP). For example, if a macrocell requires 14 product
terms, the Compiler uses the five dedicated product terms within the
macrocell and allocates two sets of parallel expanders; the first set
includes five product terms and the second set includes four product
terms, increasing the total delay by 2 × tPEXP.
Two groups of eight macrocells within each LAB (e.g., macrocells 1
through 8, and 9 through 16) form two chains to lend or borrow parallel
expanders. A macrocell borrows parallel expanders from lower-
numbered macrocells. For example, macrocell 8 can borrow parallel
expanders from macrocell 7, from macrocells 7 and 6, or from macrocells
7, 6, and 5. Within each group of eight, the lowest-numbered macrocell
can only lend parallel expanders and the highest-numbered macrocell can
only borrow them. Figure 4 shows how parallel expanders can be
borrowed from a neighboring macrocell.
相关PDF资料 |
PDF描述 |
|---|---|
| EPM7064BTI100-5 | EE PLD, 3.5 ns, PQFP100 |
| EPM7064BTI100-7 | EE PLD, 3.5 ns, PQFP100 |
| EPM7064BTI44-5 | EE PLD, 3.5 ns, PQFP44 |
| EPM7064BTI44-7 | EE PLD, 3.5 ns, PQFP44 |
| EPM7512BBC256-10 | EE PLD, 5.5 ns, PBGA256 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EPM7064BTC44-7N | 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 64 Macro 36 IOs RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100 |
| EPM7064BTI100-5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Altera Corporation 功能描述: |
| EPM7064BTI100-7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Altera Corporation 功能描述: |
| EPM7064BTI44-5 | 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 64 Macro 36 IOs RoHS:否 制造商:Lattice 系列: 存储类型:EEPROM 大电池数量:128 最大工作频率:333 MHz 延迟时间:2.7 ns 可编程输入/输出端数量:64 工作电源电压:3.3 V 最大工作温度:+ 90 C 最小工作温度:0 C 封装 / 箱体:TQFP-100 |
| EPM7064BTI44-7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Altera Corporation 功能描述: |
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