1 - Al Kossow's Bitsavers

TMS4416, SMJ441616,384·WORD BY 4·BIT DYNAMIC RAMpage modePage mode operation allows effectively faster memory access by keeping the same row address and strobing successivecolumn addresses onto the chip. Thus, the time required to setup and strobe sequential row addresses forthe same page is eliminated. To extend beyond the 64 column locations on a single RAM, the row address and RASare applied to mUltiple 16K x 4 RAMs. CAS is then decoded to select the proper RAM.power-upAfter power-up, the power supply must remain at its steady-state value for 1 ms. In addition, the RAS input mustremain high for 100 p.s immediately prior to initialization. Initialization consists of performing eight RAS cycles beforeproper device operation is achieved. .logic symbolt(14)RAM 16Kx42006~~ (13)2007/2100A2 (12)A3 (11) 0(8) A--A4 16383AS (7)A6 (6)20012/2105A7 (10)RAS (5)CAS (16)W(4)G' (1)OQl (2)OQ2 (3)OQ3 (15)OQ4 (17)23C22A.Z26tThis symbol is in accordance with IEEE Std 91/ANSI Y32.14 and recent decisions by IEEE and lEe. See explanation on page 10-1.t/)Q)to)':;Q)0........00.0.:::len... >-0EQ)~"'Cc:C'O~-0l4TEXASINSfRUMENlSPOST OFFICE BOX 225012 • DALLAS. TEXAS 752654-87