參數(shù)資料
型號(hào)： MCF54451VM240
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, 240 MHz, RISC PROCESSOR, PBGA256
封裝： 17 X 17 MM, ROHS COMPLIANT, MAPBGA-256
文件頁(yè)數(shù)： 46/48頁(yè)
文件大?。?/td> 945K
代理商： MCF54451VM240
Pin Assignments and Reset States
MCF5445x ColdFire Microprocessor Data Sheet, Rev. 6
Freescale Semiconductor
7
3.3.1
Power-Up Sequence
If EVDD/SDVDD are powered up with the IVDD at 0 V, the sense circuits in the I/O pads cause all pad output drivers connected
to the EVDD/SDVDD to be in a high impedance state. There is no limit on how long after EVDD/SDVDD powers up before IVDD
must power up. The rise times on the power supplies should be slower than 50 V/millisecond to avoid turning on the internal
ESD protection clamp diodes.
3.3.2
Power-Down Sequence
If IVDD/PVDD 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 PVDD power down before EVDD or SDVDD must power down. There are no
requirements for the fall times of the power supplies.
4
Pin Assignments and Reset States
4.1
Signal Multiplexing
The following table lists all the MCF5445x pins grouped by function. The Dir column is the direction for the primary function
of the pin only. Refer to Section 4, “Pin Assignments and Reset States,” for package diagrams. For a more detailed discussion
of the MCF5445x signals, consult the MCF54455 Reference Manual (MCF54455RM).
NOTE
In this table and throughout this document, a single signal within a group is designated
without square brackets (i.e., FB_AD23), while designations for multiple signals within a
group use brackets (i.e., FB_AD[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. Most pins that
are muxed with GPIO default to their GPIO functionality. See Table 3 for a list of the
exceptions.
Table 3. Special-Case Default Signal Functionality
Pin
256 MAPBGA
360 TEPBGA
FB_AD[31:0]
FB_AD[31:0] except when serial boot selects 0-bit
boot port size.
FB_BE/BWE[3:0]
FB_CS[3:1]
FB_OE
FB_R/W
FB_TA
FB_TS
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PDF描述
MCF54452CVR200 32-BIT, 200 MHz, RISC PROCESSOR, PBGA360
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCF54451VM240J 功能描述:微處理器 - MPU MCF5445X V4M CORE MMU RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MCF54452 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor
MCF54452CVR200 功能描述:微處理器 - MPU MCF5445X V4M CORE MMU RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MCF54452VR266 功能描述:微處理器 - MPU MCF5445X V4M CORE MMU RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MCF54453 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor
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