仕様
| 属性 | 値 |
| Package / Case | Tube,Tube |
| Part Status | Obsolete |
| Memory Type | Volatile |
| Memory Format | SRAM |
| Technology | SRAM - Asynchronous |
| Memory Size | 256Kb (32K x 8) |
| 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 |
概要
Description
CY7C199-15VC is Cypress’ dual-port static RAM (DPRAM). Key idea: two independent memory ports (Port A and Port B) with separate address and data paths, allowing concurrent reads/writes and making it ideal for fast buffering between processors or peripherals.
Key points:
- Dual-port SRAM: enables simultaneous access from two masters.
- Asynchronous operation: no wait states; straightforward timing.
- 15 ns access time (the “-15” speed grade).
- Typically 5V operation (voltage Family details vary by package); “VC” denotes package/voltage family options (consult datasheet for exact options).
- Available in various organizations and package types (e.g., SOIC/PLCC variants); exact density and bus width depend on the specific device variant.
- Common uses: inter-CPU buffers, high-speed FIFOs, crossbar/shared-memory applications.
For exact capacity, pinout, and electrical characteristics, refer to the CY7C199-15VC datasheet and the specific package you plan to use.
Key points:
- Dual-port SRAM: enables simultaneous access from two masters.
- Asynchronous operation: no wait states; straightforward timing.
- 15 ns access time (the “-15” speed grade).
- Typically 5V operation (voltage Family details vary by package); “VC” denotes package/voltage family options (consult datasheet for exact options).
- Available in various organizations and package types (e.g., SOIC/PLCC variants); exact density and bus width depend on the specific device variant.
- Common uses: inter-CPU buffers, high-speed FIFOs, crossbar/shared-memory applications.
For exact capacity, pinout, and electrical characteristics, refer to the CY7C199-15VC datasheet and the specific package you plan to use.
Features
CY7C199-15VC is a high-speed CMOS static RAM. Key features include:
- 1 Mbit memory (128K × 8) organization
- 15 ns access time
- 5 V operation (typical 4.5–5.5 V)
- Asynchronous operation with control pins: CE#, OE#, WE#
- True 3-state I/O for bus sharing
- No clock required (purely address/data with control signals)
- Industrial temperature option available (-40 °C to +85 °C)
- RoHS/compliant packaging options (e.g., SOIC/TSOP/DIP variants)
- Very high write/read cycle endurance (billions of cycles typical)
Note: exact electrical specs, package options, and temperature ranges depend on the specific variant; consult the official datasheet for precise details.
- 1 Mbit memory (128K × 8) organization
- 15 ns access time
- 5 V operation (typical 4.5–5.5 V)
- Asynchronous operation with control pins: CE#, OE#, WE#
- True 3-state I/O for bus sharing
- No clock required (purely address/data with control signals)
- Industrial temperature option available (-40 °C to +85 °C)
- RoHS/compliant packaging options (e.g., SOIC/TSOP/DIP variants)
- Very high write/read cycle endurance (billions of cycles typical)
Note: exact electrical specs, package options, and temperature ranges depend on the specific variant; consult the official datasheet for precise details.
Pinout
- Pin count: 28 pins (DIP-28/SO-28)
- Function: Static RAM (SRAM), single-port. 2K × 8-bit capacity with address inputs A0–A10, data I/O DQ0–DQ7, and control pins CE (chip enable), OE (output enable), WE (write enable). Speed grade -15 (15 ns).
- Function: Static RAM (SRAM), single-port. 2K × 8-bit capacity with address inputs A0–A10, data I/O DQ0–DQ7, and control pins CE (chip enable), OE (output enable), WE (write enable). Speed grade -15 (15 ns).
Manufacturer
- Manufacturer: Cypress Semiconductor Corporation (now a subsidiary of Infineon Technologies AG).
- What kind of company: A global semiconductor company that designs and manufactures memory ICs and other integrated circuits (e.g., microcontrollers, USB controllers, interface products).
- What kind of company: A global semiconductor company that designs and manufactures memory ICs and other integrated circuits (e.g., microcontrollers, USB controllers, interface products).
Application
CY7C199-15VC is a high-speed static RAM (SRAM). Typical application areas include:
- High-speed data buffering and caching in ASIC/FPGA designs
- Framebuffers and video/graphics memory
- Look-up tables and small register files in DSPs
- Data buffering for communications and networking equipment
- Embedded system memory (scratchpad RAM)
- Data acquisition and instrumentation buffering
- Real-time buffering for multimedia devices (printers, scanners, etc.)
- High-speed data buffering and caching in ASIC/FPGA designs
- Framebuffers and video/graphics memory
- Look-up tables and small register files in DSPs
- Data buffering for communications and networking equipment
- Embedded system memory (scratchpad RAM)
- Data acquisition and instrumentation buffering
- Real-time buffering for multimedia devices (printers, scanners, etc.)
Package
CY7C199-15VC is available in a 28-pin plastic SOIC (Surface Mount) package.
