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Description
The VG468321CQ-7 is a high-speed CMOS synchronous graphics RAM, also known as SGRAM. It has a capacity of 16M bits and is internally configured as dual 256K x 32 DRAM. With a synchronous interface, all signals are registered on the positive edge of the clock signal, CLK. The SGRAM is organized into two banks, each consisting of 1024 rows by 256 columns by 32 bits. Read and write accesses to the SGRAM are burst-oriented and start at a selected location, continuing for a programmed number of locations in a programmed sequence. Accesses begin with the registration of a BankActivate command, followed by a Read or Write command.
Specifications and features
- Fast access time from clock: 4.5/5/5.5ns
- Fast clock rate: 200/166/143 MHz
- Fully synchronous operation
- Internal pipelined architecture
- Dual internal banks (256K x 32-bit x 2-bank)
- Programmable Mode and Special Mode registers
- CAS Latency: 1, 2, or 3
- Burst Length: 1, 2, 4, 8, or full page
- Burst Type: interleaved or linear burst
- Burst Read Single Write
- Load Color or Mask register
- Burst stop function
- Individual byte controlled by DQM0-3
- Block write and write-per-bit capability
- Auto Refresh and Self Refresh
- 2048 refresh cycles/32ms
- Single + 3.3V ±0.3V power supply
- Input Reference Voltage: Vref = 1.5V ±0.2V
- Interface: LVTTL and SSTL_3
- JEDEC 100-pin Plastic QFP package
Application Scenarios
The VG468321CQ-7 SGRAM is widely used in applications that require high-speed and high-capacity graphics memory. It is commonly used in graphic cards, video game consoles, and other devices that demand high-performance image processing. Its fast access time, fully synchronous operation, and dual internal banks make it suitable for high-speed graphics rendering and data-intensive applications.
Comparison
Advantages- Fast access time from clock
- Fast clock rate
- Fully synchronous operation
- Internal pipelined architecture
- Dual internal banks
- Programmable Mode and Special Mode registers
- Multiple burst length and burst type options
- Auto Refresh and Self Refresh support
Disadvantages- Requires a single + 3.3V ±0.3V power supply
- Only compatible with LVTTL and SSTL_3 interfaces
- Available in JEDEC 100-pin Plastic QFP package only
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download VG468321CQ-7
- Chipdatas Part: CD91-VG468321CQ-7
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 14:22 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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