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MPC823 データシート(PDF) 6 Page - Freescale Semiconductor, Inc |
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MPC823 データシート(HTML) 6 Page - Freescale Semiconductor, Inc |
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6 / 70 page  MPC823 ELECTRICAL SPECIFICATIONS EXTERNAL BUS ELECTRICAL CHARACTERISTICS Table 1. Bus Operation Timing NUM CHARACTERISTIC 25MHz 40MHz 50MHz UNIT MIN MAX MIN MAX MIN MAX B1 CLKOUT Period 40 Ñ 25 Ñ 20 Ñ ns B1a EXTCLK to CLKOUT Phase Skew (EXTCLK>15MHz and MF £ 2) -0.9 0.9 -0.9 0.9 -0.9 0.9 ns B1b EXTCLK to CLKOUT Phase Skew (EXTCLK>10MHz and MF £ 10) -2.3 2.3 -2.3 2.3 -2.3 2.3 ns B1c CLKOUT Phase Jitter (EXTCLK>15MHz and MF £2) -0.6 0.6 -0.6 0.6 -0.6 0.6 ns B1d CLKOUT Phase Jitter (EXTCLK>10MHz and MF £10) -22-22-22 ns B1e CLKOUT Frequency Jitter (MF<10) Ñ 0.5 Ñ 0.5 Ñ 0.5 % B1f CLKOUT Frequency Jitter (10<MF<500) Ñ2Ñ2Ñ2 % B1g CLKOUT Frequency Jitter (MF>500) Ñ3Ñ3Ñ3 % B1h Frequency Jitter on EXTCLK Ñ 0.5 Ñ 0.5 Ñ 0.5 % B2 Clock Pulse Width Low 16 Ñ 10 Ñ 8 Ñ ns B3 Clock Pulse Width High 16 Ñ 10 Ñ 8 Ñ ns B4 CLKOUT Rise Time Ñ4Ñ4Ñ4 ns B5 CLKOUT Fall Time Ñ4Ñ4Ñ4 ns B6 N/A (Used on Interactive Spreadsheet) B7 CLKOUT to A(6:31), RD/WR, BURST, D(0:31), DP(0:3) Invalid 10 Ñ5Ñ5Ñ ns B7a CLKOUT to TSIZ(0:1),REG, RSV, AT(0:3),BDIP, PTR Invalid 10 Ñ5Ñ5Ñ ns B7b CLKOUT to BR, BG, FRZ, VFLS(0:1), VF(0:2), IWP(0:2), LWP(0:1), STS Invalid 10 Ñ5Ñ5Ñ ns B8 CLKOUT to A(6:31), RD/WR, BURST, D(0:31), DP(0:3) Valid 10 19 5 13 5 12 ns B8a CLKOUT to TSIZ(0:1),REG, RSV, AT(0:3), BDIP, PTR Valid 10 19 5 13 5 12 ns B8b CLKOUT to BR, BG, VFLS(0:1), VF(0:2), IWP(0:2), FRZ, LWP(0:1), STS Valid 10 19513512 ns B9 CLKOUT to A(6:31), RD/WR, BURST, D(0:31), DP(0:3), TSIZ(0:1),REG, RSV, AT(0:3), PTR Hi Z 10 19513512 ns B10 N/A B11 CLKOUT to TS, BB Assertion 10 19 5 12.25 5 12.25 ns B11a CLKOUT to TA, BI Assertion (when driven by the Memory Controller or PCMCIA Interface) 2.5 11 2.5 9.25 2.5 9.25 ns B12 CLKOUT to TS, BB Negation 10 19 5 13 5 12 ns B12a CLKOUT to TA, BI Negation (when driven by the Memory Controller or PCMCIA Interface) 2.5 11 2.5 11 2.5 11 ns B13 CLKOUT to TS, BB Hi Z 10 24521519 ns Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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