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参数资料
型号： LC5512MB-45FN256C
厂商： Lattice Semiconductor Corporation
文件页数： 7/99页
文件大小： 0K
描述： IC CPLD 512MACROCELLS 256FPBGA
标准包装： 90
系列： ispXPLD® 5000MB
可编程类型： 系统内可编程
最大延迟时间 tpd(1)： 4.5ns
电压电源 - 内部： 2.3 V ~ 2.7 V
逻辑元件/逻辑块数目： 16
宏单元数： 512
输入/输出数： 193
工作温度： 0°C ~ 90°C
安装类型： 表面贴装
封装/外壳： 256-BGA
供应商设备封装： 256-FPBGA（17x17）
包装： 托盘
Lattice Semiconductor
ispXPLD 5000MX Family Data Sheet
11
Pseudo Dual-Port SRAM Mode
In Pseudo Dual-Port SRAM Mode the multi-function array is configured as a SRAM with an independent read and
write ports that access the same 16,384-bits of memory. Data widths of 1, 2, 4, 8, 16 and 32 are supported by the
MFB. Figure 10 shows the block diagram of the Pseudo Dual-Port SRAM.
Write data, write address, chip select and write enable signals are always synchronous (registered). The read data
and read address signals can be synchronous or asynchronous. Reset is asynchronous. All write signals share the
same clock, and clock enable. All read signals share the same clock and clock enable. Reset is shared by both
read and write signals. Table 6 shows the possible sources for the clock, clock enable and initialization signals for
the various registers.
Figure 10. Pseudo Dual-Port SRAM Block Diagram
Table 6. Register Clock, Clock Enable, and Reset in Pseudo Dual-Port SRAM Mode
Register
Input
Source
Write Address, Write
Data, Write Enable,
and Write Chip Select
Clock
WCLK or one of the global clocks (CLK0 - CLK3). The selected signal can
be inverted if desired.
Clock Enable
WCEN or one of the global clocks (CLK1 - CLK2). The selected signal can
be inverted if desired.
Reset
Created by the logical OR of the global reset signal and RST. RST may have
inversion if desired.
Read Data and Read
Address
Clock
RCLK or one of the global clocks (CLK0 - CLK3). The selected signal can be
inverted if desired.
Clock Enable
RCEN or one of the global clocks (CLK1 - CLK2). The selected signal can
be inverted if desired.
Reset
Created by the logical OR of the global reset signal and RST. RST may have
inversion if desired.
‘
68 Inputs
From
Routing
16,384 bit
Pseudo
Dual
Port
SRAM
Array
Write Address
(WAD[0:8-13])
Write Clk Enable (WCEN)
Write Clock (WCLK)
Read Address
(RAD[0:8-13])
Write Enable (WE)
Write Chip Sel (WCS[0,1])
Reset (RST)
Read Clk Enable (RCEN)
Read Clock (RCLK)
Write Data
(WD[0:0,1,3,7,15,31])
RESET
CLK0
CLK3
CLK1
CLK2
Read Data
(RD[0:0-15])
SELECT
DEVICES
DISCONTINUED
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LC5512MB-45FN484I 制造商:LATTICE 制造商全称:Lattice Semiconductor 功能描述:3.3V, 2.5V and 1.8V In-System Programmable eXpanded Programmable Logic Device XPLD⑩ Family
LC5512MB-45FN672C 制造商:LATTICE 制造商全称:Lattice Semiconductor 功能描述:3.3V, 2.5V and 1.8V In-System Programmable eXpanded Programmable Logic Device XPLD⑩ Family
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