• CY7C028-15AXC TQFP-100
CY7C028-15AXC TQFP-100




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Overview of CY7C028-15AXC

Functional Description The CY7C027/028 and CY7C037/038 are low-power CMOS 32K, 64K x 16/18 dual-port static RAMs. Various arbitration schemes are included on the devices to handle situations when multiple processors access the same piece of data. Two ports are provided, permitting independent, asynchronous access for reads and writes to any location in memory. The devices can be utilized as standalone 16/18-bit dual-port static RAMs or multiple devices can be combined in order to function as a 32/36-bit or wider master/slave dual-port static RAM. An M/S pin is provided for implementing 32/36-bit or wider memory applications without the need for separate master and slave devices or additional discrete logic


Key Features

  • True Dual-Ported memory cells which allow simulta neous access of the same memory location
  • 32K x 16 organization (CY7C027)
  • 64K x 16 organization (CY7C028)
  • 32K x 18 organization (CY7C037)
  • 64K x 18 organization (CY7C038)
  • 0.35-micron CMOS for optimum speed/power
  • High-speed access: 12[1]/15/20 ns
  • Low operating power
  • — Active: ICC = 180 mA (typical)
  • — Standby: ISB3 = 0.05 mA (typical)
  • Fully asynchronous operation
  • Automatic power-down
  • Expandable data bus to 32/36 bits or more using Master/Slave chip select when using more than one device
  • On-chip arbitration logic
  • Semaphores included to permit software handshaking between ports
  • INT flags for port-to-port communication
  • Separate upper-byte and lower-byte control
  • Dual Chip Enables
  • Pin select for Master or Slave
  • Commercial and industrial temperature ranges
  • Available in 100-pin TQFP
  • Pb-Free packages available


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Category Integrated Circuits (ICs)MemoryMemory Mfr Cypress Semiconductor Corp
Series - Package Tray
Product Status Obsolete Digi-Key Programmable Not Verified
Memory Type Volatile Memory Format SRAM
Technology SRAM - Dual Port, Asynchronous Memory Size 1Mbit
Memory Organization 64K x 16 Memory Interface Parallel
Write Cycle Time - Word, Page 15ns Access Time 15 ns
Voltage - Supply 4.5V ~ 5.5V Operating Temperature 0°C ~ 70°C (TA)
Mounting Type Surface Mount Package / Case 100-LQFP
Supplier Device Package 100-TQFP (14x14)

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