📄 idt72251.ftm
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<!DOCTYPE FTML SYSTEM "ftml.dtd"><FTML><HEAD><TITLE>FMF Timing for IDT72251 Parts</TITLE><REVISION.HISTORY>version: | author: | mod date: | changes made: V1.0 R. Munden 99 MAY 23 Initial release</REVISION.HISTORY></HEAD><BODY><TIMESCALE>1ns</TIMESCALE><MODEL>IDT72251<FMFTIME>IDT72251L15J<SOURCE>IDT data sheet January 1998</SOURCE><COMMENT>The Values listed are for VCC=4.5V to 5.5V, CL=30pF, Ta=0 to 70 Celsius</COMMENT><COMMENT>Typical values are derived</COMMENT><TIMING> (DELAY (ABSOLUTE (IOPATH RSNeg EFNeg (3:10:15) (3:10:15)) (IOPATH RCLK EFNeg (2:6:10) (2:6:10)) (IOPATH RCLK PAENeg (2:6:10) (2:6:10)) (IOPATH WCLK FFNeg (2:6:10) (2:6:10)) (IOPATH WCLK PAFNeg (2:4:7) (2:4:7)) (IOPATH RSNeg Q0 (3:10:15) (3:10:15) (3:10:15) (3:10:15) (3:10:15) (3:10:15)) (IOPATH RCLK Q0 (2:6:10) (2:6:10) (2:6:10) (2:6:10) (2:6:10) (2:6:10)) (IOPATH OENeg Q0 (3:6:8) (3:6:8) (3:6:8) (3:6:8) (3:6:8) (3:6:8)) )) (TIMINGCHECK (PERIOD (posedge RCLK) (15:15:15)) (PERIOD (posedge WCLK) (15:15:15)) (WIDTH (posedge RCLK) (6:6:6)) (WIDTH (negedge RCLK) (6:6:6)) (WIDTH (posedge WCLK) (6:6:6)) (WIDTH (negedge WCLK) (6:6:6)) (WIDTH (negedge RSNeg) (15:15:15)) (SETUPHOLD D0 WCLK (4:4:4) (1:1:1)) (SETUPHOLD REN1Neg RCLK (4:4:4) (1:1:1)) (SETUP REN1Neg RSNeg (10:10:10)) )) (CELL (CELLTYPE "VITALbuf") (INSTANCE %LABEL%/SKEW1) (DELAY (ABSOLUTE ( DEVICE (6) ) ) ) ) (CELL (CELLTYPE "VITALbuf" ) (INSTANCE %LABEL%/SKEW2) (DELAY (ABSOLUTE ( DEVICE (15) ) ) )</TIMING></FMFTIME><FMFTIME>IDT72251L20J<SOURCE>IDT data sheet January 1998</SOURCE><COMMENT>The Values listed are for VCC=4.5V to 5.5V, CL=30pF, Ta=0 to 70 Celsius</COMMENT><COMMENT>Typical values are derived</COMMENT><TIMING> (DELAY (ABSOLUTE (IOPATH RSNeg EFNeg (4:12:20) (4:12:20)) (IOPATH RCLK EFNeg (2:8:12) (2:8:12)) (IOPATH RCLK PAENeg (2:8:12) (2:8:12)) (IOPATH WCLK FFNeg (2:8:12) (2:8:12)) (IOPATH WCLK PAFNeg (2:8:12) (2:8:12)) (IOPATH RSNeg Q0 (4:12:20) (4:12:20) (4:12:20) (4:12:20) (4:12:20) (4:12:20)) (IOPATH RCLK Q0 (2:8:12) (2:8:12) (2:8:12) (2:8:12) (2:8:12) (2:8:12)) (IOPATH OENeg Q0 (3:7:10) (3:7:10) (3:7:10) (3:7:10) (3:7:10) (3:7:10)) )) (TIMINGCHECK (PERIOD (posedge RCLK) (20:20:20)) (PERIOD (posedge WCLK) (20:20:20)) (WIDTH (posedge RCLK) (8:8:8)) (WIDTH (negedge RCLK) (8:8:8)) (WIDTH (posedge WCLK) (8:8:8)) (WIDTH (negedge WCLK) (8:8:8)) (WIDTH (negedge RSNeg) (15:15:15)) (SETUPHOLD D0 WCLK (5:5:5) (1:1:1)) (SETUPHOLD REN1Neg RCLK (5:5:5) (1:1:1)) (SETUP REN1Neg RSNeg (12:12:12)) )) (CELL (CELLTYPE "VITALbuf") (INSTANCE %LABEL%/SKEW1) (DELAY (ABSOLUTE ( DEVICE (8) ) ) ) ) (CELL (CELLTYPE "VITALbuf" ) (INSTANCE %LABEL%/SKEW2) (DELAY (ABSOLUTE ( DEVICE (16) ) ) )</TIMING></FMFTIME><FMFTIME>IDT72251L25J<SOURCE>IDT data sheet January 1998</SOURCE><COMMENT>The Values listed are for VCC=4.5V to 5.5V, CL=30pF, Ta=0 to 70 Celsius</COMMENT><COMMENT>Typical values are derived</COMMENT><TIMING> (DELAY (ABSOLUTE (IOPATH RSNeg EFNeg (4:18:25) (4:18:25)) (IOPATH RCLK EFNeg (2:10:15) (2:10:15)) (IOPATH RCLK PAENeg (2:10:15) (2:10:15)) (IOPATH WCLK FFNeg (2:10:15) (2:10:15)) (IOPATH WCLK PAFNeg (2:10:15) (2:10:15)) (IOPATH RSNeg Q0 (4:18:25) (4:18:25) (4:18:25) (4:18:25) (4:18:25) (4:18:25)) (IOPATH RCLK Q0 (4:18:25) (2:10:15) (2:10:15) (2:10:15) (2:10:15) (2:10:15)) (IOPATH OENeg Q0 (3:8:13) (3:8:13) (3:8:13) (3:8:13) (3:8:13) (3:8:13)) )) (TIMINGCHECK (PERIOD (posedge RCLK) (25:25:25)) (PERIOD (posedge WCLK) (25:25:25)) (WIDTH (posedge RCLK) (10:10:10)) (WIDTH (negedge RCLK) (10:10:10)) (WIDTH (posedge WCLK) (10:10:10)) (WIDTH (negedge WCLK) (10:10:10)) (WIDTH (negedge RSNeg) (15:15:15)) (SETUPHOLD D0 WCLK (6:6:6) (1:1:1)) (SETUPHOLD REN1Neg RCLK (6:6:6) (1:1:1)) (SETUPHOLD REN1Neg RSNeg (15:15:15) (1:1:1)) )) (CELL (CELLTYPE "VITALbuf") (INSTANCE %LABEL%/SKEW1) (DELAY (ABSOLUTE ( DEVICE (10) ) ) ) ) (CELL (CELLTYPE "VITALbuf" ) (INSTANCE %LABEL%/SKEW2) (DELAY (ABSOLUTE ( DEVICE (18) ) ) )</TIMING></FMFTIME><FMFTIME>IDT72251L35J<SOURCE>IDT data sheet January 1998</SOURCE><COMMENT>The Values listed are for VCC=4.5V to 5.5V, CL=30pF, Ta=0 to 70 Celsius</COMMENT><COMMENT>Typical values are derived</COMMENT><TIMING> (DELAY (ABSOLUTE (IOPATH RSNeg EFNeg (4:25:35) (4:25:35)) (IOPATH RCLK EFNeg (3:14:20) (3:14:20)) (IOPATH RCLK PAENeg (3:14:20) (3:14:20)) (IOPATH WCLK FFNeg (3:14:20) (3:14:20)) (IOPATH WCLK PAFNeg (3:14:20) (3:14:20)) (IOPATH RSNeg Q0 (4:25:35) (4:25:35) (4:25:35) (4:25:35) (4:25:35) (4:25:35)) (IOPATH RCLK Q0 (2:10:20) (2:10:20) (2:10:20) (2:10:20) (2:10:20) (2:10:20)) (IOPATH OENeg Q0 (3:10:15) (3:10:15) (3:10:15) (3:10:15) (3:10:15) (3:10:15)) )) (TIMINGCHECK (PERIOD (posedge RCLK) (35:35:35)) (PERIOD (posedge WCLK) (35:35:35)) (WIDTH (posedge RCLK) (14:14:14)) (WIDTH (negedge RCLK) (14:14:14)) (WIDTH (posedge WCLK) (14:14:14)) (WIDTH (negedge WCLK) (14:14:14)) (WIDTH (negedge RSNeg) (35:35:35)) (SETUPHOLD D0 WCLK (7:7:7) (2:2:2)) (SETUPHOLD REN1Neg RCLK (7:7:7) (2:2:2)) (SETUP REN1Neg RSNeg (20:20:20)) )) (CELL (CELLTYPE "VITALbuf") (INSTANCE %LABEL%/SKEW1) (DELAY (ABSOLUTE ( DEVICE (12) ) ) ) ) (CELL (CELLTYPE "VITALbuf" ) (INSTANCE %LABEL%/SKEW2) (DELAY (ABSOLUTE ( DEVICE (20) ) ) )</TIMING></FMFTIME></BODY></FTML>⌨️ 快捷键说明
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