- 您现在的位置：买卖IC网 > PDF目录69032 > MCF5251CEVM140 (FREESCALE SEMICONDUCTOR INC) 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225 PDF资料下载
参数资料
| 型号： | MCF5251CEVM140 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225 |
| 封装： | LEAD FREE, MAPBGA-225 |
| 文件页数： | 29/32页 |
| 文件大小： | 652K |
| 代理商： | MCF5251CEVM140 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页
Signal Description
MCF5251 ColdFire Processor Data Sheet: Technical Data, Rev. 2.1
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
相关PDF资料 |
PDF描述 |
|---|---|
| MCF5251EVM140 | 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225 |
| MCF54417CMJ250 | MICROPROCESSOR, PBGA256 |
| MCF54418CMJ250 | MICROPROCESSOR, PBGA256 |
| MCF54415CMJ250 | MICROPROCESSOR, PBGA256 |
| MCIMX251AJM4A | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA400 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF5251CVM140 | 功能描述:微处理器 - MPU AMADEUS+USB RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MCF5251DVM140 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire Processor |
| MCF5251EVM140 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire Processor |
| MCF5251VM140 | 功能描述:微处理器 - MPU AMADEUS+USB RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MCF5253 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor Data Sheet |
发布紧急采购，3分钟左右您将得到回复。