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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MPC862 데이터시트(PDF) 16 Page - Freescale Semiconductor, Inc |
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MPC862 데이터시트(HTML) 16 Page - Freescale Semiconductor, Inc |
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16 / 88 page  MPC862/857T/857DSL PowerQUICC™ Family Hardware Specifications, Rev. 3 16 Freescale Semiconductor Bus Signal Timing Table 7 provides the bus operation timing for the MPC862/857T/857DSL at 33 MHz, 40 Mhz, 50 MHz and 66 Mhz. The timing for the MPC862/857T/857DSL bus shown assumes a 50-pF load for maximum delays and a 0-pF load for minimum delays. Table 7. Bus Operation Timings Num Characteristic 33 MHz 40 MHz 50 MHz 66 MHz Unit Min Max Min Max Min Max Min Max B1 CLKOUT period 30.30 30.30 25.00 30.30 20.00 30.30 15.15 30.30 ns B1a EXTCLK to CLKOUT phase skew (EXTCLK > 15 MHz and MF <= 2) -0.90 0.90 -0.90 0.90 -0.90 0.90 -0.90 0.90 ns B1b EXTCLK to CLKOUT phase skew (EXTCLK > 10 MHz and MF < 10) -2.30 2.30 -2.30 2.30 -2.30 2.30 -2.30 2.30 ns B1c CLKOUT phase jitter (EXTCLK > 15 MHz and MF <= 2) 1 -0.60 0.60 -0.60 0.60 -0.60 0.60 -0.60 0.60 ns B1d CLKOUT phase jitter1 -2.00 2.00 -2.00 2.00 -2.00 2.00 -2.00 2.00 ns B1e CLKOUT frequency jitter (MF < 10) 1 — 0.50 — 0.50 — 0.50 — 0.50 % B1f CLKOUT frequency jitter (10 < MF < 500) 1 — 2.00 — 2.00 — 2.00 — 2.00 % B1g CLKOUT frequency jitter (MF > 500) 1 — 3.00 — 3.00 — 3.00 — 3.00 % B1h Frequency jitter on EXTCLK 2 — 0.50 — 0.50 — 0.50 — 0.50 % B2 CLKOUT pulse width low (MIN = 0.040 x B1) 12.10 — 10.00 — 8.00 — 6.10 — ns B3 CLKOUT width high (MIN = 0.040 x B1) 12.10 — 10.00 — 8.00 — 6.10 — ns B4 CLKOUT rise time 3 (MAX = 0.00 x B1 + 4.00) — 4.00 — 4.00 — 4.00 — 4.00 ns B533 CLKOUT fall time3 (MAX = 0.00 x B1 + 4.00) — 4.00 — 4.00 — 4.00 — 4.00 ns B7 CLKOUT to A(0:31), BADDR(28:30), RD/WR, BURST, D(0:31), DP(0:3) invalid (MIN = 0.25 x B1) 7.60 — 6.30 — 5.00 — 3.80 — ns B7a CLKOUT to TSIZ(0:1), REG, RSV, AT(0:3), BDIP, PTR invalid (MIN = 0.25 x B1) 7.60 — 6.30 — 5.00 — 3.80 — ns B7b CLKOUT to BR, BG, FRZ, VFLS(0:1), VF(0:2) IWP(0:2), LWP(0:1), STS invalid 4 (MIN = 0.25 x B1) 7.60 — 6.30 — 5.00 — 3.80 — ns B8 CLKOUT to A(0:31), BADDR(28:30) RD/WR, BURST, D(0:31), DP(0:3) valid (MAX = 0.25 x B1 + 6.3) 7.60 13.80 6.30 12.50 5.00 11.30 3.80 10.00 ns |
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