MSM54V16282 Datasheet | OKI Electric

DESCRIPTION The MSM54V16282 is a 4-Mbit CMOS multiport DRAM posed of a 262,144-word by 16-bit dynamic RAM, and a 512-word by 16-bit SAM. Its RAM and SAM operate independently and asynchronously. It supports three types of operations: random access to RAM port, high speed serial access to SAM port, and bidirectional transfer of data between any selected row in the RAM port and the SAM port. In addition to the conventional multiport DRAM operating modes, the MSM54V16282 features block write and flash write functions on the RAM port, and a split data transfer capability on the SAM port. The SAM port requires no refresh operation because it uses static CMOS flip-flops. FEATURES - Single power supply: 3.3 V ± 0.3 V - RAS only refresh - Full TTL patibility - CAS before RAS refresh - Multiport organization - CAS before RAS self-refresh RAM : 256K word - 16 bits - Hidden refresh SAM : 512 word - 16 bits - Serial read/write - Fast page mode - 512 tap location - Write per bit - Bidirectional data transfer - Byte write - Split transfer - Masked flash write - Masked write transfer - Masked block write (8 columns) - Refresh: 512 cycles/8 ms - Package options: 64-pin 525 mil plastic SSOP (SSOP64-P-525-0.80-K) (Product : MSM54V16282-xx GS-K) 70/64-pin 400 mil plastic TSOP (Type II)(TSOPII70/64-P-400-0.65-K)(Product : MSM54V16282-xx TS-K) xx indicates speed rank. PRODUCT FAMILY Family MSM54V16282-60 MSM54V16282-70 Access Time RAM 60 ns 70 ns SAM 18 ns 20 ns Cycle Time RAM 120 ns 140 ns SAM 22 ns 22 ns Power Dissipation Operating 160 m A 150 m A Standby 8 m A 8 m A 1/39 .. ¡ Semiconductor PIN CONFIGURATION (TOP VIEW) VCC TRG VSS SDQ0 DQ0 SDQ1 DQ1 VCC SDQ2 DQ2 SDQ3 DQ3 VSS SDQ4 DQ4 SDQ5 DQ5 VCC SDQ6 DQ6 SDQ7 DQ7 VSS WEL WEU RAS A8 A7 A6 A5 A4 VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 SC SE VSS SDQ15 DQ15 SDQ14 DQ14 VCC SDQ13 DQ13 SDQ12...