Sep / 2014 SEIKO EPSON ＴＤ R&D Div. RTC-6242 vs RTC-7242 対比表 ACタイミング特性 実力値 ここに掲載されるデータは保証値ではなく、 任意ロットの参考実力値です。 RTC-6242をRTC-7242に置き換えなどの際の ご参考としてご利用ください。 値は-40℃～85℃のワースト値です。 サンプル数は約50個です。 ALE 使用時 (1) Write mode VDD=5 V ± 0.5 V, Upper line RTC-6242 specification. Lower line RTC-7242 specification Symbol Min. tC1S tSU(CS1) tAS tSU(A-ALE) tAH th(ALE-A) tAW tw(ALE) tALW tSU(ALE-W) tWW tw(W) tWAL tSU(W-ALE) tDS tSU(D-W) tDH th(W-D) tC1H th(CS1) tRCV trec(W) 1000 1000 25 50 50 50 40 80 10 0 120 120 20 50 100 80 10 10 1000 1000 60 200 Ability of RTC7242 Unit ns 0 12 (1) Write mode VIH2 VIH2 CS1 tsu(CS1) tsu(A-ALE) th(CS1) th(ALE-A) 6 A0 to A3 CS0 25 VIH1 VIH1 VIL1 VIL1 tw(ALE) VIH1 VIH1 ALE -60 VIL1 VIL1 tsu(ALE-W) tw(W) tsu(W-ALE) VIH1 50 WR VIH1 VIL1 VIL1 th(W-D) tsu(D-W) 0 D0 to D3 (Input) VIH1 VIH1 VIL1 VIL1 45 -6 0 100 マイナス値の意味。 tsuALE-Wの実力値はWR立下りから60ns後に アドレス確定しても正常動作したということです。 (2) Read mode Symbol tC1S tSU(CS1) tAS tSU(A-ALE) tAH th(ALE-A) tAW tw(ALE) tALR tSU(ALE-R) tRAL tSU(R-ALE) tRD (CL=150 pF ) tDR tPVZ(R-Q) tC1H th(CS1) tRCV trec(W) Upper line RTC-6242 specification. Lower line RTC-7242 specification. Ability of Min. Max. Unit RTC7242 1000 1000 25 50 25 50 40 80 10 0 10 50 - 0 (2) Read mode VIH2 VIH2 CS1 tsu(CS1) tsu(A-ALE) - 12 A0 to A3 CS0 - 6 th(CS1) th(ALE-A) VIH1 VIH1 VIL1 VIL1 tw(ALE) VIH1 VIH1 ALE - 14 - -55 - -30 VIL1 VIL1 tsu(ALE-R) ns tsu(R-ALE) VIH1 RD VIH1 VIL1 VIL1 tpvz(R-Q) tpzv(R-Q) ) - 120 85 0 0 1000 1000 60 200 70 50 - 0 - 50 D0 to D3 (Input) VIH1 VIH1 VIL1 VIL1 ALEをVDD固定時 ( VDD=5 V ± 0.5 V Write mode (1) Write mode VIH2 VIH2 CS1 tsu(CS1) th(CS1) VIH1 A0 to A3 CS0 VIH1 VIL1 VIL1 tsu(A-W) tw(W) th(W-A) VIH1 WR VIH1 VIL1 VIL1 th(W-D) tsu(D-W) D0 to D3 (Input) VIH1 VIH1 VIL1 VIL1 Item Upper line RTC-6242 specification. Lower line RTC-7242 specification Unit Ability of RTC-7242 Symbol Min. Address hold time after write tC1S tSU(CS1) tC1H th(CS1) tAW tSU(A-W) th(W-A) Write pulse width Data input set-up time before write Data input hold time after write Write recovery time tw(W) tSU(D-W) th(W-D) trec(W) 1000 1000 1000 1000 50 50 10 10 120 80 10 200 CS1 set-up time CS1 hold time Address set-up time before write 0 0 ns -30 -80 50 45 -6 100 VIH2 VIH2 CS1 (2) Read mode tsu(CS1) th(CS1) VIH1 A0 to A3 CS0 VIH1 VIL1 VIL1 th(R-A) tsu(A-R) VIH1 RD VIH1 VIL1 VIL1 tpvz(R-Q) tpzv(R-Q) D0 to D3 (Output) Item CS1 set-up time CS1 hold time Address set-up time before read Address hold time after read Data output transfer time after read Data output floating transfer time after read Read recovery time VOH VOH VOL VOL Symbol Min. tC1S tSU(CS1) tC1H th(CS1) tAR tSU(A-R) tRA th(R-A) tRD tpzv(R-Q) ( CL=150 pF ) tDR tpvz(R-Q) tRCV trec(R) 1000 1000 1000 1000 20 50 0 10 Upper line RTC-6242 specification. Lower line RTC-7242 specification Ability of Max. Unit RTC-7242 0 0 -5 -60 - 120 120 85 0 70 50 60 ns 50 (3) Read/write recovery mode trec(R/W) VIH1 RD,WR VIH1