参数资料
型号: LCMXO640E-4TN144I
厂商: Lattice Semiconductor Corporation
文件页数: 18/88页
文件大小: 0K
描述: IC FPGA 640LUTS 144TQFP
标准包装: 60
系列: MachXO
可编程类型: 系统内可编程
最大延迟时间 tpd(1): 4.2ns
电压电源 - 内部: 1.14 V ~ 1.26 V
宏单元数: 320
输入/输出数: 113
工作温度: -40°C ~ 100°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
Architecture
MachXO Family Data Sheet
output data signals are multiplexed and provide a single signal to the I/O pin via the sysIO buffer. Figure 2-17
shows the MachXO PIO logic.
The tristate control signal is multiplexed from the output data signals and their complements. In addition a global
signal (TSALL) from a dedicated pad can be used to tristate the sysIO buffer.
The PIO receives an input signal from the pin via the sysIO buffer and provides this signal to the core of the device.
In addition there are programmable elements that can be utilized by the design tools to avoid positive hold times.
Figure 2-17. MachXO PIO Block Diagram
From Routing
From Routing
TS
sysIO
TSALL
TO
Buffer
Fast Output
Data signal
DO
PAD
1
Input
Data Signal
Programmable
Delay Elements
2
3
+
4 -
Note: Buffer 1 tracks with V CCAUX
Buffer 2 tracks with V CCIO.
Buffer 3 tracks with internal 1.2V V REF.
Buffer 4 is available in MachXO1200 and MachXO2280 devices only.
From Complementary
Pad
sysIO Buffer
Each I/O is associated with a flexible buffer referred to as a sysIO buffer. These buffers are arranged around the
periphery of the device in groups referred to as Banks. The sysIO buffers allow users to implement the wide variety
of standards that are found in today’s systems including LVCMOS, TTL, BLVDS, LVDS and LVPECL.
In the MachXO devices, single-ended output buffers and ratioed input buffers (LVTTL, LVCMOS and PCI) are pow-
ered using V CCIO . In addition to the Bank V CCIO supplies, the MachXO devices have a V CC core logic power supply,
and a V CCAUX supply that powers up a variety of internal circuits including all the differential and referenced input buf-
fers.
MachXO256 and MachXO640 devices contain single-ended input buffers and single-ended output buffers with
complementary outputs on all the I/O Banks.
MachXO1200 and MachXO2280 devices contain two types of sysIO buffer pairs.
1. Top and Bottom sysIO Buffer Pairs ?
The sysIO buffer pairs in the top and bottom Banks of the device consist of two single-ended output drivers and
two sets of single-ended input buffers (for ratioed or absolute input levels). The I/O pairs on the top and bottom
2-15
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