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MT42C4256CZ-12/XT中文资料PDF规格书
MT42C4256CZ-12/XT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 |
---|---|---|---|---|---|---|---|
MICRON/镁光 |
2022 |
ZIP28 |
80000 |
原装现货,OEM渠道,欢迎咨询 |
询价 | ||
ASI/Advanced Semiconductor, In |
21+ |
CLCC28 |
19 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MICRON |
23+ |
SOJ28 |
11923 |
询价 | |||
2020+ |
PLCC |
525 |
百分百原装正品 真实公司现货库存 本公司只做原装 可 |
询价 | |||
ASI |
2021+ |
LCC |
1600 |
自家库存,百分之百原装 |
询价 | ||
ASI系列 |
23+ |
LCC |
66800 |
原装正品专营军工 |
询价 | ||
MICRON |
23+ |
NA |
406 |
专做原装正品,假一罚百! |
询价 | ||
ASI |
2021+ |
60000 |
原装现货,欢迎询价 |
询价 | |||
ASI |
CLCC28 |
19 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | |||
MICRON |
2023 |
ZIP28 |
589220 |
16余年资质 绝对原盒原盘 更多数量 |
询价 |