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| TOSHIBA Toshiba's 1 Mbit embedded DRAM core is available for the TC220C and TC220E product families. Each DRAM cell is based on a three transistor structure as shown in Figure 1. This multi-feature DRAM core is easily integrated into a broad range of applications through utilization of different core configurations. w DRAM Core Features w * Power supply: 3.3V 0.3V * Memory configurations - 128K x 8 bit - 64K x 16 bit - 32K x 32 bit - 16K x 64 bit * Full address without multiplex * Separate data input and output * Read access modes - Random access - EDO/Hyper page mode * Refresh scheme - RAS only refresh - CBR (CAS before RAS) refresh * Performance specification - trc random read cycle: 50 ns - tpc page mode read cycle: 25 ns - Refresh cycle: 256 cycles/ms (@Tj = 85C) a D . w aS t ee h 4U t om .c TC220C/E DRAM Core 0.3m 3T dRAMASIC Embedded DRAM Benefits Benefits derived from integration of DRAM with logic are: * Flexibility in utilizing different DRAM core configurations based on the application requirement * Memory access time lower than discrete packaged devices * Elimination of a large number of pins and associated packages, effectively reducing circuit board area * Lower power consumption since systems with fast and wide memory busses will dissipate significantly less power due to lower capacitance on-chip connections * Lower switching noise on data bus between memory and logic Target Applications Read word w w .D w Read bit t a S a OE e h Applications for 3T dRAMASICTM include hard disk drive controllers, buffer memory for hubs and switches and printers. t e U 4 .c m o O0-O15 Output Buffer Add. Counter (CBR) WE RAS CAS Clock Generator Column Address Buffer Row Address Buffer I0-I15 Input Buffer Column Decoder Sense Amplifiers Row Decoder A0-A7 Memory Cell Array Write word Write bit A8-A15 Figure 1. Three-Transistor DRAM Cell Figure 2. DRAM Core Block Diagram w w w .D a aS t ee h 4U t om .c 4569-02 Product Brief TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC. 1 TC220C/E DRAM Core Timing Diagrams tRC = 50ns RAS CAS A8-A15 A0-A7 WE OE O0-O15 tRAS = 35ns tRP = 15ns tCAS = 15ns tRCD = 15ns tCAC = 15ns tRAC = 30ns Figure 3. Random Mode Read Cycle 4569-03 tRC = 50ns RAS CAS A8-A15 A0-A7 WE I0-I15 tDS = 3ns tRAS = 35ns tRP = 15ns tCAS = 15ns tRCD = 15ns tDH = 10ns Figure 4. Random Mode Write Cycle 4569-04 2 TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC. TC220C/E DRAM Core tPC = 25ns RAS tCAS = 15ns CAS A8-A15 A0-A7 WE OE O0-O15 tRCD = 15ns tCP = 10ns tCAC = 15ns 4569-05 Figure 5. Hyper Page Mode Read Cycle tPC = 25ns RAS tCAS = 15ns CAS A8-A15 A0-A7 WE I0-I15 tRCD = 15ns tCP = 10ns tDS = 3ns tDH = 10ns Figure 6. Hyper Page Mode Write Cycle 4569-06 TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC. 3 TC220C/E DRAM Core Technology Resource Centers Toshiba ASIC Technology Resource Centers are located throughout the U.S. and provide a high level of technical expertise for support before, during and after the design of a Toshiba ASIC. This includes support issues dealing with EDA environments and design kits, Toshiba design methodologies, Toshiba ASIC technologies and Toshiba ASIC design implementation. Design consultation is also available. In addition, Toshiba's North America Semiconductor Engineering Development Center in San Jose, CA is staffed by system, technology and EDA design experts to work with partners on advanced System IC applications. Rigorous production quality control and monitoring coupled with a sophisticated batch tracking system enables Toshiba to meet the requirements of fast ramping, high volume markets. www.toshiba.com/taec 1. This technical data may be controlled under U.S. Export Administration Regulations and may be subject to the approval of the U.S. Department of Commerce prior to export. Any export or re-export, directly or indirectly, in contravention of the U.S. Export Administration Regulations is strictly prohibited. The information in this document has been carefully checked and is believed to be reliable; however, no responsibility can be assumed for inaccuracies that may not have been caught. All information in this document is subject to change without prior notice. Furthermore, Toshiba cannot assume responsibility for the use of any license under the patent rights of Toshiba or any third parties. 2. TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC. Regional Sales Offices Irvine, CA TEL: (714) 453-0224 FAX: (714) 453-0125 San Jose, CA TEL: (408) 456-8900 FAX: (408) 456-8910 Atlanta, GA TEL: (770) 931-3363 FAX: (770) 931-7602 Chicago, IL TEL: (708) 945-1500 FAX: (708) 945-1044 Boston, MA TEL: (617) 224-0074 FAX: (617) 224-1096 Edison, NJ TEL: (908) 248-8070 FAX: (908) 248-8030 Portland, OR TEL: (503) 629-0818 FAX: (503) 629-0827 Dallas, TX TEL: (972) 480-0470 FAX: (972) 235-4114 AS31950497 TOSHIBA |
Price & Availability of TC220C
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