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MT42C4256F-12/IT中文资料PDF规格书
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MT42C4256F-12/IT规格书详情
DESCRIPTION
The SMJ44C251B/MT42C4256 multiport video RAM is a high-speed, dual-ported memory device. It consists of a dynamic random-access memory (DRAM) organized as 262144 words of 4 bits each interfaced to a serial-data register or serial-access memory (SAM) organized as 512 words of 4 bits each. The SMJ44C251B/MT42C4256 supports three types of operation: random access to and from the DRAM, serial access to and from the serial register, and bidirectional transfer of data between any row in the DRAM and the serial register. Except during transfer operations, the SMJ44C251B/MT42C4256 can be accessed simultaneously and asynchronously from the DRAM and SAM ports.
FEATURES
• Class B High-Reliability Processing
• DRAM: 262144 Words × 4 Bits SAM: 512 Words × 4 Bits
• Single 5-V Power Supply (±10 Tolerance)
• Dual Port Accessibility–Simultaneous and Asynchronous Access From the DRAM and SAM Ports
• Bidirectional-Data-Transfer Function Between the DRAM and the Serial-Data Register
• 4 × 4 Block-Write Feature for Fast Area Fill Operations; As Many as Four Memory Address Locations Written per Cycle From an On-Chip Color Register
• Write-Per-Bit Feature for Selective Write to Each RAM I/O; Two Write-Per-Bit Modes to Simplify System Design
• Enhanced Page-Mode Operation for Faster Access
• CAS-Before-RAS (CBR) and Hidden Refresh Modes
• All Inputs/Outputs and Clocks Are TTL Compatible
• Long Refresh Period: Every 8 ms (Max)
• Up to 33-MHz Uninterrupted Serial-Data Streams
• 3-State Serial I/Os Allow Easy Multiplexing of Video-Data Streams
• 512 Selectable Serial-Register Starting
• Split Serial-Data Register for Simplified Real-Time Register Reload
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MRON/镁光 |
23+ |
NA/ |
472 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MT |
23+ |
ZIP28 |
20000 |
全新原装假一赔十 |
询价 | ||
原厂原装 |
2020+ |
原包装 |
6000 |
全新原装正品现货,假一赔佰 |
询价 | ||
MT |
23+ |
ZIP |
20000 |
原厂原装正品现货 |
询价 | ||
MCT |
1991 |
468 |
原装正品长期供货,如假包赔包换 徐小姐13714450367 |
询价 | |||
MTT |
22+ |
ZIP |
8500 |
只做原装正品假一赔十!正规渠道订货! |
询价 | ||
MICRON |
2228+ |
ZIP28 |
6368 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
MICRON/镁光 |
2022 |
ZIP28 |
80000 |
原装现货,OEM渠道,欢迎咨询 |
询价 | ||
MICRON |
2023 |
ZIP28 |
589220 |
16余年资质 绝对原盒原盘 更多数量 |
询价 | ||
MCT |
23+ |
589610 |
新到现货 原厂一手货源 价格秒杀代理! |
询价 |