HM63021 Datasheet | Renesas

HM63021 Series 2048-word × 8-bit Line Memory The HM63021 is a 2048-word × 8-bit static serial access memory (SAM) with separate data inputs and outputs. Since it has an internal address counter, no external address signal is required and internal addresses are scanned serially. Using five different address scan modes, it is applicable to FIFO memories, double-speed conversions, 1H delay lines, and 1H/2H delay lines for digital TV signals. Its minimum cycle times are 28 ns and 34 ns, cor.. responding to 8 fsc of PAL TV and NTSC TV signals. All inputs and outputs are TTL-patible. - - - - - - High speed (cycle time 28/34/45 ns (min)) pletely static memory (no refresh required) 8-bit SAM with separate I/O Low power (250 m W typ active) Single 5 V supply TTL patible Ordering Information Type No. HM63021P-28 HM63021P-34 HM63021P-45 HM63021P28N HM63021FP-28 HM63021FP-34 HM63021FP-45 HM63021FP28N Cycle time 28 ns 34 ns 45 ns 28 ns 28 ns 34 ns 45 ns 28 ns 28-pin plastic SOP (FP-28DA) Package 300-mil, 28-pin plastic DIP (DP-28N) Features - Five modes for various applications - Corresponds to digital TV system with 4 fsc sampling (PAL, NTSC) - Decoder signal output pin (fewer external circuits) - Asynchronous read/write operation - Separate address counters for read/write - No address input required Pin Arrangement D 1H/2H TBC DSC TBCE MODE1 RCLK RRES Din0 Din1 Din2 Din3 Din4 Din5 Din6 Din7 WE High Z VSS Modes 1 28 Read 2 27 control 3 26 4 25 5 24 6 23 7 22 8 21 9 20 10 19 11 18 12 17 13 16 Write 15 14 control Input Output (Top view) TBCE DSC TBC 1H/2H VCC MODE2 MODE3 OE Dout0 Dout1 Dout2 Dout3 Dout4 Dout5 Dout6 Dout7 WRES WCLK DS WT DEC3 DEC4 D CLK RES RDEC DEC2 DEC1 WDEC HM63021 Series Pin Description Pin No. 1 2 3 4 to 11 12 13 .. HM63021 Series Functions Mode input 1 (all modes) Read clock input (TBCE, DSC, TBC) Clock input (1H/2H, D) Read reset input (TBCE, DSC, TBC) Reset input (1H/2H, D) Data inputs (all modes)...