Renesas 是市场领先的双端口 RAM 供应商，可将系统设计经验与高性能电路及双端口 SRAM 技术专业经验加以有效结合，打造性能优异的异步双端口 RAM 产品。

Renesas 的异步双端口 RAM 器件是一种带有非时钟式输入和输出并用于数据、地址和控制功能的存储器器件。 这些双端口 RAM 可以响应地址和控制引脚的变化而不需要时钟或计数器，同时还允许同时从两个总线访问一个静态 SRAM 存储器位置。 大多数异步双端口 RAM 还具有仲裁逻辑。

  • 双端口 RAM 可增加带宽 (~2x SRAM)
  • 双端口 RAM 可降低设计复杂性
  • 与替代解决方案相比，双端口 RAM 可缩短上市时间

Renesas 的双端口 RAM 采用 2.5V 至 5V I/O 电压、行业标准的绿色封装（符合 6/6 RoHS 标准）和标准封装，以及商业、工业和军事级别。 Renesas 不断致力于降低 SRAM 双端口内存解决方案的高性能成本。 我们将继续保持半导体行业中双端口异步存储器的领先供应商地位。

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关于双端口存储器（双端口 RAM）

双端口存储器（双端口 RAM）是一种随机存取存储器，可支持在存储器内的不同地址同时（或几乎同时）发生的多个读取或写入操作。 该功能的主要优势在于性能方面，因为单端口 RAM 在每个时钟周期只允许读取/写入一个存储器单元，而双端口存储器在每个周期允许读取/写入两个存储器单元。 

双端口存储器的晶体管级架构使用八晶体管基本存储单元，而单端口 RAM 则使用一个六晶体管基本存储单元。 虽然这通常会增加管芯尺寸，但 Renesas 的解决方案将得到优化，并采用非常紧凑的封装。

选择双端口 RAM 的关键参数包括：

  • 核心电压： 向双端口 RAM 供电的电源电压。 这通常由系统中的电源轨决定。
  • I/O 电压： 用于数据输入和输出的电压，在某些器件中该电压与核心电压无关。
  • 总线宽度： 用于读取和写入双端口 RAM 的“通道”数量。 Renesas 提供所有常用配置。
  • 存储器密度： 这是指双端口 RAM 将保留在其存储器中的位数。 Renesas 可提供最高达 18 MB 的规格。
  • 存取时间： 查找单条信息并使其可供计算机处理的时间。 理想情况下，双端口存储器的存取时间应足够快，从而与 CPU 同步。 如果不同步，CPU 将浪费一定数量的时钟周期，从而导致速度变慢。 Renesas 可提供低至 8 纳秒的存取时间。

储存器和逻辑器件

产品选型表

    Processing table
    器件号
    Core Voltage (V)
    Bus Width (bits)
    Density (Kb)
    Pkg. Code
    Interface
    I/O Type
    Access Time (ns)
    Temp. Range
    Architecture
    Organization
    Function
    105°C Max. Case Temp.
    5962-86875
    1K x 8 Dual-Port RAM    		 5 8 8 LC48, SB48 Async 5.0 V TTL 55, 45 -55 to 125°C Dual-Port 1K x 8 Busy, Interrupt, Master
    5962-87002
    2K x 8 Dual-Port RAM    		 5 8 16 SB48 Async 5.0 V TTL 90 -55 to 125°C Dual-Port 2K x 8 Busy, Master
    5962-88610
    2K x 16 Dual-Port RAM    		 5 16 32 GU68 Async 5.0 V TTL 90 -55 to 125°C Dual-Port 2K x 16 Busy, Master
    5962-89764
    4K x 8 Dual-Port RAM    		 5 8 32 SB48 Async 5.0 V TTL 70 -55 to 125°C Dual-Port 4K x 8
    5962-91662
    4K x 16 Dual-Port RAM    		 5 16 64 FP84 Async 5.0 V TTL 55 -55 to 125°C Dual-Port 4K x 16 Busy, Interrupt, Master, Semaphore, Slave
    7005
    8K x 8 Dual-Port RAM    		 5 8 64 GU68, PLG68, PNG64 Async 5.0 V TTL 15, 20, 25, 35 -40 to 85°C, 0 to 70°C Dual-Port 8K x 8 Busy, Interrupt, Master, Semaphore, Slave
    7006
    16 K x 8 Dual-Port RAM    		 5 8 128 PLG68, PNG64 Async 5.0 V TTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 16K x 8 Busy, Interrupt, Master, Semaphore, Slave
    7007
    32K x 8 Dual-Port RAM    		 5 8 256 PLG68, PNG80 Async 5.0 V TTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 32K x 8 Busy, Interrupt, Master, Semaphore, Slave
    7008
    64K x 8 Dual-Port RAM    		 5 8 512 PNG100 Async 5.0 V TTL 20 -40 to 85°C Dual-Port 64K x 8 Busy, Interrupt, Master, Semaphore, Slave
    70121
    2K x 9 Dual-Port RAM    		 5 9 18 PLG52 Async 5.0 V TTL 25 0 to 70°C Dual-Port 2K x 9 Busy, Interrupt, Master
    7014
    4K x 9 Dual-Port RAM    		 5 9 36 PNG64 Async 5.0 V TTL 12 0 to 70°C Dual-Port 4K x 9
    7024
    4K x 16 Dual-Port RAM    		 5 16 64 FP84, GU84, PLG84, PNG100 Async 5.0 V TTL 15, 20, 25, 55, 35 -40 to 85°C, -55 to 125°C, 0 to 70°C Dual-Port 4K x 16 Busy, Interrupt, Master, Semaphore, Slave
    7025
    8K x 16 Dual-Port RAM    		 5 16 128 GU84, PLG84, PNG100 Async 5.0 V TTL 15, 20, 25, 35, 55 -40 to 85°C, 0 to 70°C Dual-Port 8K x 16 Busy, Interrupt, Master, Semaphore, Slave
    7026
    16K x 16 Dual-Port RAM    		 5 16 256 GU84 Async 5.0 V TTL 25, 35 -55 to 125°C, 0 to 70°C Dual-Port 16K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70261
    16K x 16 Dual-Port RAM w/Int    		 5 16 256 PNG100 Async 5.0 V TTL 15, 20, 55 -40 to 85°C, 0 to 70°C Dual-Port 16K x 16 Busy, Interrupt, Master, Semaphore, Slave
    7027
    32K x 16 Dual-Port RAM    		 5 16 512 GU108, PNG100 Async 5.0 V TTL 15, 20, 35 -40 to 85°C, 0 to 70°C Dual-Port 32K x 16 Interrupt
    7028
    64K x16 Dual-Port RAM    		 5 16 1024 PNG100 Async 5.0 V TTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 64K x 16 Busy, Interrupt, Master, Semaphore, Slave
    7035
    8K x 18 Dual-Port RAM    		 5 18 144 PNG100 Async 5.0 V TTL 15 0 to 70°C Dual-Port 8K x 18 Busy, Interrupt, Master, Semaphore, Slave
    70T631
    256K x 18, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's    		 2.5 18 4608 BC256, BF208 Async 2.5 V LVTTL, 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 256K x 18 Busy, Interrupt, JTAG, Master, Semaphore, Slave, Sleep Mode
    70T633
    512K x 18, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's    		 2.5 18 9216 BC256, BCG256, BF208, BFG208 Async 2.5 V LVTTL, 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 512K x 18 Busy, Interrupt, JTAG, Master, Semaphore, Slave, Sleep Mode
    70T651
    256K x 36 Async, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's    		 2.5 36 9216 BC256, BF208, BFG208 Async 2.5 V LVTTL, 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 256K x 36 Busy, Interrupt, JTAG, Master, Semaphore, Slave, Sleep Mode
    70T653M
    512K x 36 Async, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's    		 2.5 36 18432 BC256, BCG256 Async 2.5 V LVTTL, 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 512K x 36 Interrupt
    70T659
    128K x 36 Async, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's    		 2.5 36 4608 BC256, BF208 Async 2.5 V LVTTL, 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 128K x 36 Busy, Interrupt, JTAG, Master, Semaphore, Slave, Sleep Mode
    70V05
    8K x 8 3.3v Dual-Port RAM    		 3.3 8 64 PLG68, PNG64 Async 3.3 V LVTTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 8K x 8 Interrupt
    70V06
    16K x 8 3.3V Dual-Port RAM    		 3.3 8 128 PNG64 Async 3.3 V LVTTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 16K x 8 Interrupt
    70V07
    32K x 8 3.3V Dual-Port    		 3.3 8 256 PNG80 Async 3.3 V LVTTL 35 -40 to 85°C Dual-Port 32K x 8 Busy, Interrupt, Master, Semaphore, Slave
    70V08
    64K x 8 3.3V Dual-Port RAM    		 3.3 8 512 PNG100 Async 3.3 V LVTTL 20 -40 to 85°C Dual-Port 64K x 8 Busy, Interrupt, Master, Semaphore, Slave
    70V09
    128K x 8 3.3V Dual-Port RAM    		 3.3 8 1024 PNG100 Async 3.3 V LVTTL 20 -40 to 85°C Dual-Port 128K x 8 Busy, Interrupt, Master, Semaphore, Slave
    70V24
    4K x 16 3.3V Dual-Port RAM    		 3.3 16 64 PNG100 Async 3.3 V LVTTL 15, 20, 35, 55 -40 to 85°C, 0 to 70°C Dual-Port 4K x 16 Interrupt, Master, Semaphore, Slave
    70V25
    8K x 16 3.3V Dual-Port RAM    		 3.3 16 128 PNG100 Async 3.3 V LVTTL 15, 20, 25, 35 -40 to 85°C, 0 to 70°C Dual-Port 8K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70V26
    16K x 16 3.3V Dual-Port RAM    		 3.3 16 256 PLG84 Async 3.3 V LVTTL 25 0 to 70°C Dual-Port 16K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70V261
    16K x 16 3.3V Dual-Port RAM w/Int    		 3.3 16 256 PNG100 Async 3.3 V LVTTL 25, 35 -40 to 85°C, 0 to 70°C Dual-Port 16K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70V27
    32K x 16 3.3V Dual-Port RAM    		 3.3 16 512 PNG100 Async 3.3 V LVTTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 32K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70V28
    64K x 16 3.3V Dual-Port RAM    		 3.3 16 1024 PNG100 Async 3.3 V LVTTL 15, 20 -40 to 85°C, 0 to 70°C Dual-Port 64K x 16 Busy, Interrupt, Master, Semaphore, Slave
    70V35
    8K x 18 3.3V Dual-Port RAM    		 3.3 18 144 PNG100 Async 3.3 V LVTTL 20 -40 to 85°C Dual-Port 8K x 18 Busy, Interrupt, Master, Semaphore, Slave
    70V37
    32K x 18 3.3V Dual-Port RAM    		 3.3 18 576 PNG100 Async 3.3 V LVTTL 15 0 to 70°C Dual-Port 32K x 18 Busy, Interrupt, Master, Semaphore, Slave
    70V38
    64K x 18 3.3V Dual-Port RAM    		 3.3 18 1152 PNG100 Async 3.3 V LVTTL 20 -40 to 85°C Dual-Port 64K x 18 Busy, Interrupt, Master, Semaphore, Slave
    70V631
    256K x 18 3.3V Dual-Port RAM, Interleaved I/O's    		 3.3 18 4608 BC256, BCG256, BF208, BFG208, PKG128 Async 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 256K x 18 Busy, Interrupt, JTAG, Master, Slave
    70V639
    128K x 18 3.3V Dual-Port RAM, Interleaved I/O's    		 3.3 18 2304 BC256, BF208, BFG208, PKG128 Async 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 128K x 18 Busy, Interrupt, JTAG, Master, Slave
    70V657
    32K x 36 3.3V Dual-Port RAM, Interleaved I/O's    		 3.3 36 1152 BC256, BCG256, BF208, BFG208, DRG208 Async 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 32K x 36 Interrupt
    70V658
    64K x 36 3.3V Dual-Port RAM, Interleaved I/O's    		 3.3 36 2304 BC256, BCG256, BF208, BFG208, DRG208 Async 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 64K x 36 Busy, Interrupt, JTAG, Master, Semaphore, Slave
    70V659
    128K x 36 3.3V Dual-Port RAM, Interleaved I/O's    		 3.3 36 4608 BC256, BCG256, BF208, BFG208, DRG208 Async 3.3 V LVTTL 10, 12, 15 -40 to 85°C, 0 to 70°C Dual-Port 128K x 36 Busy, Interrupt, JTAG, Master, Semaphore, Slave
    7130
    1K x 8 Dual-Port RAM    		 5 8 8 PLG52, PNG64, PPG64 Async 5.0 V TTL 20, 25 -40 to 85°C, 0 to 70°C Dual-Port 1K x 8 Busy, Interrupt, Master
    7132
    2K x 8 Dual-Port RAM    		 5 8 16 LC48, PLG52, SB48 Async 5.0 V TTL 100, 20, 35, 55, 25 -40 to 85°C, -55 to 125°C, 0 to 70°C Dual-Port 2K x 8 Busy, Master
    71321
    2K x 8 Dual-Port RAM w/Int    		 5 8 16 PLG52, PNG64, PPG52, PPG64 Async 5.0 V TTL 20, 25, 55, 35 -40 to 85°C, 0 to 70°C Dual-Port 2K x 8 Busy, Interrupt, Master
    7133
    2K x 16 Dual-Port RAM    		 5 16 32 GU68, PLG68, PNG100 Async 5.0 V TTL 20, 25, 35, 70, 90 -40 to 85°C, -55 to 125°C, 0 to 70°C Dual-Port 2K x 16 Busy, Master
    7134
    4K x 8 Dual-Port RAM    		 5 8 32 PLG52, SB48 Async 5.0 V TTL 20, 25, 35, 55 -40 to 85°C, -55 to 125°C, 0 to 70°C Dual-Port 4K x 8 Semaphore
    71342
    4K x 8 Dual-Port RAM w/Semaphore    		 5 8 32 PLG52, PNG64 Async 5.0 V TTL 20, 25 -40 to 85°C, 0 to 70°C Dual-Port 4K x 8 Semaphore
    7140
    1K x 8 Dual-Port RAM    		 5 8 8 PLG52, PNG64 Async 5.0 V TTL 20, 25 0 to 70°C Dual-Port 1K x 8 Busy, Interrupt, Slave
    7142
    2K x 8 Dual-Port RAM    		 5 8 16 PLG52 Async 5.0 V TTL 20 0 to 70°C Dual-Port 2K x 8 Busy, Slave
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