参数资料
型号: LC4512B-35TN176C
厂商: Lattice Semiconductor Corporation
文件页数: 3/99页
文件大小: 0K
描述: IC CPLD 512MACROCELLS 176TQFP
标准包装: 40
系列: ispMACH® 4000B
可编程类型: 系统内可编程
最大延迟时间 tpd(1): 3.5ns
电压电源 - 内部: 2.3 V ~ 2.7 V
逻辑元件/逻辑块数目: 32
宏单元数: 512
输入/输出数: 128
工作温度: 0°C ~ 90°C
安装类型: 表面贴装
封装/外壳: 176-LQFP
供应商设备封装: 176-TQFP(24x24)
包装: 托盘
Lattice Semiconductor
Figure 1. Functional Block Diagram
ispMACH 4000V/B/C/Z Family Data Sheet
I/O
Block
I/O
Block
ORP
ORP
16
16
Generic
Logic
Block
Generic
Logic
Block
16
36
16
36
16
36
16
36
Generic
Logic
Block
Generic
Logic
Block
16
16
ORP
ORP
I/O
Block
I/O
Block
The I/Os in the ispMACH 4000 are split into two banks. Each bank has a separate I/O power supply. Inputs can
support a variety of standards independent of the chip or bank power supply. Outputs support the standards com-
patible with the power supply provided to the bank. Support for a variety of standards helps designers implement
designs in mixed voltage environments. In addition, 5V tolerant inputs are specified within an I/O bank that is con-
nected to V CCO of 3.0V to 3.6V for LVCMOS 3.3, LVTTL and PCI interfaces.
ispMACH 4000 Architecture
There are a total of two GLBs in the ispMACH 4032, increasing to 32 GLBs in the ispMACH 4512. Each GLB has
36 inputs. All GLB inputs come from the GRP and all outputs from the GLB are brought back into the GRP to be
connected to the inputs of any other GLB on the device. Even if feedback signals return to the same GLB, they still
must go through the GRP. This mechanism ensures that GLBs communicate with each other with consistent and
predictable delays. The outputs from the GLB are also sent to the ORP. The ORP then sends them to the associ-
ated I/O cells in the I/O block.
Generic Logic Block
The ispMACH 4000 GLB consists of a programmable AND array, logic allocator, 16 macrocells and a GLB clock
generator. Macrocells are decoupled from the product terms through the logic allocator and the I/O pins are decou-
pled from macrocells through the ORP. Figure 2 illustrates the GLB.
3
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