参数资料
型号: EPM7256E
厂商: Altera Corporation
英文描述: Programmable Logic Device Family
中文描述: 可编程逻辑器件系列
文件页数: 10/62页
文件大小: 1173K
代理商: EPM7256E
10
Altera Corporation
MAX 7000 Programmable Logic Device Family Data Sheet
Figure4
shows a MAX 7000E and MAX 7000S device macrocell.
Figure 4. MAX 7000E & MAX 7000S Device Macrocell
Combinatorial logic is implemented in the logic array, which provides
five product terms per macrocell. The product-term select matrix allocates
these product terms for use as either primary logic inputs (to the
OR
and
XOR
gates) to implement combinatorial functions, or as secondary inputs
to the macrocell’s register clear, preset, clock, and clock enable control
functions. Two kinds of expander product terms (“expanders”) are
available to supplement macrocell logic resources:
Shareable expanders, which are inverted product terms that are fed
back into the logic array
Parallel expanders, which are product terms borrowed from adjacent
macrocells
The Altera development system automatically optimizes product-term
allocation according to the logic requirements of the design.
For registered functions, each macrocell flipflop can be individually
programmed to implement D, T, JK, or SR operation with programmable
clock control. The flipflop can be bypassed for combinatorial operation.
During design entry, the designer specifies the desired flipflop type; the
Altera development software then selects the most efficient flipflop
operation for each registered function to optimize resource utilization.
Product-
Term
Select
Matrix
36 Signals
from PIA
16 Expander
Product Terms
Logic Array
Parallel Logic
Expanders
(from other
macrocells)
Shared Logic
Expanders
Clear
Select
Global
Clear
Global
Clocks
Clock/
Enable
Select
2
PRN
D/T
CLRN
Q
ENA
Register
Bypass
to I/O
Control
Block
to PIA
Programmable
Register
from
I/O pin
Fast Input
Select
VCC
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相关代理商/技术参数
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EPM7256EGC192-12 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 256 Macro 164 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
EPM7256EGC192-15 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 256 Macro 164 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
EPM7256EGC192-20 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 256 Macro 164 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
EPM7256EGI192-20 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 256 Macro 164 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
EPM7256EQC160-12 功能描述:CPLD - 复杂可编程逻辑器件 CPLD - MAX 7000 256 Macro 132 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