EDS2504APTA-TI

PRELIMINARY DATA SHEET 256M bits SDRAM WTR (Wide Temperature Range) EDS2504APTA-TI (64M words × 4 bits) EDS2508APTA-TI (32M words × 8 bits) EDS2516APTA-TI (16M words × 16 bits) Description The EDS2504AP is a 256M bits SDRAM organized as 16,777,216 words × 4 bits × 4 banks. The EDS2508 AP is a 256M bits SDRAM organized as 8,388,608 words × 8 bits × 4 banks. The EDS2516 AP is a 256M bits SDRAM organized as 4194304 words × 16 bits × 4 banks. All inputs and outputs are referred to the rising edge of the clock input. It is packaged in standard 54pin plastic TSOP (II). Pin Configurations /xxx indicates active low signal. 54-pin TSOP VDD VDD NC DQ0 NC NC DQ0 DQ1 NC NC NC DQ2 NC NC DQ1 DQ3 NC VDD NC /WE /CAS /RAS /CS BA0 BA1 A10 A0 A1 A2 A3 VDD VDD DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 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 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 VSS VSS VSS DQ15 DQ7 NC VSSQ VSSQ VSSQ VDDQ VDDQ VDDQ DQ14 NC NC DQ13 DQ6 DQ3 VDDQ VDDQ VDDQ VSSQ VSSQ VSSQ Features 3.3V power supply Clock frequency: 133MHz (max.) LVTTL interface Single pulsed /RAS 4 banks can operate simultaneously and independently Burst read/write operation and burst read/single write operation capability Programmable burst length (BL): 1, 2, 4, 8, full page 2 variations of burst sequence  Sequential (BL = 1, 2, 4, 8)  Interleave (BL = 1, 2, 4, 8) Programmable /CAS latency (CL): 2, 3 Byte control by DQM : DQM (...