參數(shù)資料
型號： MCF5251VM140
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225
封裝： LEAD FREE, MAPBGA-225
文件頁數(shù)： 31/34頁
文件大?。?/td> 674K
代理商： MCF5251VM140
Signal Description
MCF5251 ColdFire Processor Data Sheet: Technical Data, Rev. 3
6
Freescale Semiconductor
3
Signal Description
This chapter describes the MCF5251 input and output signals. The signal descriptions as shown in Table 3
are grouped according to relevant functionality. For additional signal information, see “Chapter 2, Signal
Description” in the MCF5251 reference manual.
UART
Universal
Asynchronous
Receiver
/Transmitter Module
Connectivity
Peripheral
Three UARTs handle asynchronous serial communication.
USBOTG
USB 2.0 High-Speed
On-The-Go
Connectivity
Peripheral
The USB module is used for communication to a PC or communication to
slave devices; for example, to download data from a hard disc player to a
flash player, and to other devices.
Table 3. MCF5251 Signal Index
Signal Name
Mnemonic
Function
Input/
Output
Reset
State
Address
A[24:1]
A[23]/GPO54
24 address lines—address 23 is
multiplexed with GPO54 and
address 24 is multiplexed with A20
(SDRAM access only).
Out
X
Read-write control
RW
Bus write enable—indicates if read
or write cycle in progress.
Out
H
Output enable
OE
Output enable for asynchronous
memories connected to chip selects
Out
negated
Data
D[31:16]
Data bus used to transfer word data
In/Out
Hi-Z
Synchronous row
address strobe
SDRAS/GPIO59
Row address strobe for external
SDRAM
Out
negated
Synchronous column
address strobe
SDCAS/GPIO39
Column address strobe for external
SDRAM
Out
negated
SDRAM write enable
SDWE/GPIO38
Write enable for external SDRAM
Out
negated
SDRAM upper byte
enable
SDUDQM/GPO53
Upper byte enable—indicates during
write cycle if high byte is written.
Out
–
SDRAM lower byte
enable
SDLDQM/GPO52
Lower byte enable—indicates during
write cycle if low byte is written.
Out
–
SDRAM chip selects
SD_CS0/GPIO60
SDRAM chip select
In/Out
negated
SDRAM clock enable
BCLKE/GPIO63
SDRAM clock enable
Out
–
System clock
BCLK/GPIO40
SDRAM clock output
In/Out
–
Table 2. Digital and Analog Modules (continued)
Block
Mnemonic
Block Name
Functional
Grouping
Brief Description
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MCF5251CVM140 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCF5253 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor Data Sheet
MCF5253CVM140 功能描述:微處理器 - MPU MCF5253 CONSUMER IND 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MCF5253CVM140J 功能描述:32位微控制器 - MCU CONSUMER IND. RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT
MCF5253VM140 功能描述:微處理器 - MPU Coldfire V2 MPU 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MCF5253VM140J 功能描述:32位微控制器 - MCU CONSUMER IND. RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT
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