- 您现在的位置：买卖IC网 > PDF目录177783 > LCMXO2280C-3FT256C (LATTICE SEMICONDUCTOR CORP) PDF资料下载
参数资料
| 型号： | LCMXO2280C-3FT256C |
| 厂商： | LATTICE SEMICONDUCTOR CORP |
| 元件分类： | PLD |
| 中文描述： | FLASH PLD, 5.1 ns, PBGA256 |
| 封装： | 17 X 17 MM, FTBGA-256 |
| 文件页数： | 7/96页 |
| 文件大小： | 1389K |
| 代理商： | LCMXO2280C-3FT256C |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页
2-12
Architecture
Lattice Semiconductor
MachXO Family Data Sheet
The EBR memory supports three forms of write behavior for single or dual port operation:
1.
Normal – data on the output appears only during the read cycle. During a write cycle, the data (at the current
address) does not appear on the output. This mode is supported for all data widths.
2.
Write Through – a copy of the input data appears at the output of the same port. This mode is supported for
all data widths.
3.
Read-Before-Write – when new data is being written, the old contents of the address appears at the output.
This mode is supported for x9, x18 and x36 data widths.
FIFO Configuration
The FIFO has a write port with Data-in, CEW, WE and CLKW signals. There is a separate read port with Data-out,
RCE, RE and CLKR signals. The FIFO internally generates Almost Full, Full, Almost Empty and Empty Flags. The
Full and Almost Full flags are registered with CLKW. The Empty and Almost Empty flags are registered with CLKR.
The range of programming values for these flags are in Table 2-7.
Table 2-7. Programmable FIFO Flag Ranges
The FIFO state machine supports two types of reset signals: RSTA and RSTB. The RSTA signal is a global reset
that clears the contents of the FIFO by resetting the read/write pointer and puts the FIFO flags in their initial reset
state. The RSTB signal is used to reset the read pointer. The purpose of this reset is to retransmit the data that is in
the FIFO. In these applications it is important to keep careful track of when a packet is written into or read from the
FIFO.
Memory Core Reset
The memory array in the EBR utilizes latches at the A and B output ports. These latches can be reset asynchro-
nously. RSTA and RSTB are local signals, which reset the output latches associated with Port A and Port B respec-
tively. The Global Reset (GSRN) signal resets both ports. The output data latches and associated resets for both
ports are as shown in Figure 2-13.
Flag Name
Programming Range
Full (FF)
1 to (up to 2
N-1)
Almost Full (AF)
1 to Full-1
Almost Empty (AE)
1 to Full-1
Empty (EF)
0
N = Address bit width
相关PDF资料 |
PDF描述 |
|---|---|
| LCMXO256E-3T100I | |
| LCMXO256C-5T100C | |
| LCMXO2280E-4M132I | |
| LCMXO2280E-3FT324C | |
| LCMXO2280E-3T144C | |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LCMXO2280C-3FT256I | 功能描述:CPLD - 复杂可编程逻辑器件 2280 LUTs 211 IO 1.8 /2.5/3.3V -3 Spd I 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 |
| LCMXO2280C-3FT324C | 功能描述:CPLD - 复杂可编程逻辑器件 2280 LUTs 271 IO 1.8 /2.5/3.3V -3 Spd 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 |
| LCMXO2280C-3FT324I | 功能描述:CPLD - 复杂可编程逻辑器件 2280 LUTs 271 IO 1.8 /2.5/3.3V -3 Spd I 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 |
| LCMXO2280C-3FTN256C | 功能描述:CPLD - 复杂可编程逻辑器件 2280 LUTS 211 I/O 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 |
| LCMXO2280C-3FTN256I | 功能描述:CPLD - 复杂可编程逻辑器件 2280 LUTs 211 IO 1.8 /2.5/3.3V -3 Spd I 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 |
发布紧急采购，3分钟左右您将得到回复。