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XPC7445 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc |
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XPC7445 Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc |
4 / 12 page 4 MPC7455 Part Number Specification for the XPC74x5RXnnnNx Series MOTOROLA General Parameters General Parameters Table 8 provides the clock AC timing specifications for the MPC7455 part numbers described herein. Table 12 provides the L3 bus interface AC timing specifications for MSUG2 for the MPC7455 part numbers described herein. Table 8. Clock AC Timing Specifications At recommended operating conditions. See Table 4. Characteristic Symbol Maximum Processor Core Frequency Unit Notes 600 MHz 733 MHz 800 MHz Min Max Min Max Min Max Processor frequency fcore 500 600 500 733 500 800 MHz 1 VCO frequency fVCO 1000 1200 1000 1466 1000 1600 MHz 1 Notes: 1. Caution: The SYSCLK frequency, PLL_CFG[0:4] settings must be chosen such that the resulting SYSCLK (bus) frequency, CPU (core) frequency, and PLL (VCO) frequency do not exceed their respective maximum or minimum operating frequencies (see Table 4 in the MPC7455 RISC Microprocessor Hardware Specifications). Refer to the PLL_CFG[0:4] signal description in Section 1.9.1, “PLL Configuration,” for valid PLL_CFG[0:4] settings. Table 12. L3 Bus Interface AC Timing Specifications for MSUG2 At recommended operating conditions. See Table 4. Parameter Symbol All Speed Grades Unit Notes L2CR[12] = 0 and L3CR[12] = 08 L2CR[12] = 1 and L3CR[12] = 18 Min Max Min Max L3_CLK rise and fall time tL3CR, tL3CF — 1.0 — 1.0 ns 1 Setup times: Data and parity tL3DVEH, tL3DVEL –0.1 — –0.1 — ns 2, 3, 4 Input hold times: Data and parity tL3DXEH , tL3DXEL tL3_ECHO_CLK/4 + 0.6 —tL3_ECHO_CLK/4 +0.6 —ns 2, 4 Valid times: Data and parity tL3CHDV, tL3CLDV —(– tL3_CLK/4) + 0.4 —(– tL3_CLK/4) + 0.8 ns 5, 6, 7 Valid times: All other outputs tL3CHOV —tL3_CLK/4 + 1.0 — tL3_CLK/4 + 1.2 ns 5, 7 Output hold times: Data and parity tL3CHDX , tL3CLDX, tL3_CLK/4 – 0.4 — tL3_CLK/4 – 0.2 — ns 5, 6, 7 Output hold times: All other outputs tL3CHOX tL3_CLK/4 – 0.5 — tL3_CLK/4 – 0.3 — ns 5, 7 L3_CLK to high impedance: Data and parity tL3CLDZ —tL3_CLK/2 — tL3_CLK/2 ns Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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Similar Description - XPC7445 |
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