công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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MCF5327 bảng dữ liệu(PDF) 6 Page - Freescale Semiconductor, Inc |
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MCF5327 bảng dữ liệu(HTML) 6 Page - Freescale Semiconductor, Inc |
6 / 50 page MCF532x ColdFire® Microprocessor Data Sheet, Rev. 4 Pin Assignments and Reset States Freescale Semiconductor 6 high current in the internal ESD protection diodes. The rise times on the power supplies should be slower than 500 us to avoid turning on the internal ESD protection clamp diodes. 3.3.2 Power Down Sequence If IVDD/PLLVDD are powered down first, sense circuits in the I/O pads cause all output drivers to be in a high impedance state. There is no limit on how long after IVDD and PLLVDD power down before EVDD or SDVDD must power down. IVDD should not lag EVDD, SDVDD, or PLLVDD going low by more than 0.4 V during power down or there is undesired high current in the ESD protection diodes. There are no requirements for the fall times of the power supplies. The recommended power down sequence is as follows: 1. Drop IVDD/PLLVDD to 0 V. 2. Drop EVDD/SDVDD supplies. 4 Pin Assignments and Reset States 4.1 Signal Multiplexing The following table lists all the MCF532x pins grouped by function. The Dir column is the direction for the primary function of the pin only. Refer to Section 7, “Package Information,” for package diagrams. For a more detailed discussion of the MCF532x signals, consult the MCF5329 Reference Manual (MCF5329RM). NOTE In this table and throughout this document, a single signal within a group is designated without square brackets (i.e., A23), while designations for multiple signals within a group use brackets (i.e., A[23:21]) and is meant to include all signals within the two bracketed numbers when these numbers are separated by a colon. NOTE The primary functionality of a pin is not necessarily its default functionality. Pins that are muxed with GPIO default to their GPIO functionality. Table 3. MCF5327/8/9 Signal Information and Muxing Signal Name GPIO Alternate 1 Alternate 2 MCF5327 196 MAPBGA MCF5328 256 MAPBGA MCF53281 MCF5329 256 MAPBGA Reset RESET2 — — — I EVDD J11 N15 N15 RSTOUT — — — O EVDD P14 P14 P14 Clock EXTAL — — — I EVDD L14 P16 P16 XTAL2 — — — O EVDD K14 N16 N16 EXTAL32K — — — I EVDD M11 P13 P13 XTAL32K — — — O EVDD N11 R13 R13 FB_CLK — — — O SDVDD L1 T2 T2 |
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Mô tả tương tự - MCF5327 |
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