msm518222-40zs Oki Semiconductor, msm518222-40zs Datasheet
msm518222-40zs
Related parts for msm518222-40zs
msm518222-40zs Summary of contents
Page 1
... Field Memory DESCRIPTION The OKI MSM518222 is a high performance 2-Mbit, 256K ¥ 8-bit, Field Memory designed for high-speed serial access applications such as HDTVs, conventional NTSC TVs, VTRs, digital movies and Multi-media systems. The 2-Mbit capacity fits one field of a conventional NTSC TV screen. Two cascaded MSM518222s make one frame of the screen: two or more MSM518222s can be cascaded directly without any delay devices between them ...
Page 2
... Self refresh (No refresh control is required) • Package options : 28-pin 400 mil plastic ZIP 28-pin 400 mil plastic SOJ 28-pin 430 mil plastic SOP PRODUCT FAMILY Family Access Time (Max.) MSM518222-25ZS 25 ns MSM518222-30ZS 25 ns MSM518222-40ZS 30 ns MSM518222-25JS 25 ns MSM518222-30JS 25 ns MSM518222-40JS 30 ns MSM518222-30GS MSM518222-40GS ...
Page 3
... Write Enable RE Read Enable IE Input Enable OE Output Enable Write Reset Clock RSTR Read Reset Clock Data Input Data Output V Power Supply ( Ground ( Connection MSM518222 ...
Page 4
... Read Buffer (¥ 8) 512 Word Serial Read Register (¥ 8) Read Line Buffer Low-Half (¥ 8) 256 (¥ Word Sub-Register (¥ 8) 256K (¥ 8) Memory Array 71 Word Sub-Register (¥ 8) 256 (¥ 8) Write Line Buffer Low-Half (¥ 8) 512 Word Serial Write Register (¥ 8) Data-in ...
Page 5
... DRAM array, an RSTW operation is required after the last SWCK cycle. Note that every write timing of MSM518222 is delayed by one clock compared with read timings for easy cascading without any interface delay devices. Write Reset : RSTW The first positive transition of SWCK after RSTW becomes high resets the write address counters to zero ...
Page 6
... The three-state output buffer provides direct TTL compatibility (no pullup resistor required). Data out is the same polarity as data in. The output becomes valid after the access time interval t begins with the rising edge of SRCK. *There are no output valid time restrictions on MSM518222. Read Enable : RE The function gate the SRCK clock for incrementing the read pointer ...
Page 7
... Such a timing should be avoided. Cascade Operation The MSM518222 is designed to allow easy cascading of multiple memory devices. This provides higher storage depth longer delay than can be achieved with only one memory device. MSM518222 ...
Page 8
... Other Pins Tested < V < – -25 -30 Minimum Cycle Time, Output Open -40 Input Pin = MSM518222 Rating Unit –1 °C –55 to 150 °C Max. Unit 5 ...
Page 9
... MSM518222 = 5 V ±10 0°C to 70°C) CC MSM518222-40 Unit Min. Max. — — — — — — — — ...
Page 10
... However, normal write is achieved in this address condition. 6. Outputs are measured with a load equivalent to 1 TTL load and 30 pF. Output reference levels are V is defined transition time that signal transfers ns 2.4 V and MSM518222 = 3.0 V and 10/16 ...
Page 11
... Write Cycle Timing (Write Enable) n cycle SWCK t WENH WE t WWEL n RSTW 0 cycle 1 cycle t t WSWH WSWL t RSTWH t SWC Disable cycle Disable cycle t t WDSH WDSS t WWEH n MSM518222 2 cycle 2 n+1 cycle t WENS n+1 11/ ...
Page 12
... RSTRS t T RSTR OUT RE OE n+1 cycle n+2 cycle t t IDSH IDSS t WIEH n 0 cycle 1 cycle t t WSRH WSRL t RSTRH t SRC t DDCK 0 1 MSM518222 n+3 cycle t IENS n+3 2 cycle 2 12/ ...
Page 13
... Read Cycle Timing (Output Enable) n cycle SRCK t OENH OE t WOEN n OUT RE RSTR Disable cycle Disable cycle t t RDSH RDSS t WREH n n+1 cycle n+2 cycle ODSH ODSS t WOEH Hi-Z MSM518222 n+1 cycle t RENS n+1 n+3 cycle OENS t DECK n+3 13/ ...
Page 14
... Semiconductor PACKAGE DIMENSIONS ZIP28-P-400-1.27 Mirror finish MSM518222 (Unit : mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating more Solder plate thickness Package weight (g) 1.85 TYP. 14/16 ...
Page 15
... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM518222 (Unit : mm) Package material Epoxy resin ...
Page 16
... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM518222 (Unit : mm) Package material Epoxy resin ...