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参数资料
| 型号： | SCF5249LAG120 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 120 MHz, RISC PROCESSOR, PQFP144 |
| 封装： | LEAD FREE, QFP-144 |
| 文件页数： | 11/56页 |
| 文件大小： | 918K |
| 代理商： | SCF5249LAG120 |
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Signal Descriptions
SCF5249 Integrated ColdFire Microprocessor Data Sheet, Rev. 3
Freescale Semiconductor
19
8.7
Bus Buffer Signals
As the SCF5249 has a quite complicated slave bus, with the possibility to put DRAM on the bus, put
asynchronous memories on the bus, and to put ISA bus peripherals on the bus, it may become necessary
to introduce a bus buffer on the bus. The SCF5249 has a glueless interface to steer these bus buffers with
2 bus buffer output signals BUFENB1/GPIO57 and BUFENB2/GPIO7.
NOTE
The BUFENB2 signal is only used in the 160 MAPBGA package.
8.8
I2C Module Signals
There are two I2C interfaces on this device.
The I2C module acts as a quick two-wire, bidirectional serial interface between the SCF5249 processor
and peripherals with an I2C interface (e.g., LED controller, A-to-D converter, D-to-A converter). When
devices connected to the I2C bus drive the bus, they will either drive logic-0 or high-impedance. This can
be accomplished with an open-drain output.
8.9
Serial Module Signals
The following signals transfer serial data between the two UART modules and external peripherals.
All serial module signals can be used as gpi or gpo. The GPIO-FUNCTION and GPIO1-FUNCTION
registers must be programmed to determine pin functions of the inputs and outputs. If used as gpo or gpi,
UART functionality is lost.
Table 6. I2C Module Signals
I2c Module Signal
Description
I2C Serial Clock
The SCL/QPSICLK and SCL2/GPIO3 bidirectional signals are
the clock signal for first and second I2C module operation. The
I2C module controls this signal when the bus is in master
mode; all I2C devices drive this signal to synchronize I2C
timing.
Signals are multiplexed
Function select is done via PLLCR register.
I2C Serial Data
The SDA/QSPI_DIN and SDA2/GPIO55 bidirectional signals
are the data input/output for the first and second serial I2C
interface.
Signals are multiplexed
Function select is done via PLLCR register.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SCF5249LPV120 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SCF5249VF140 | 功能描述:微处理器 - MPU AUDIO COLDFIRE 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 |
| SCF5249VM140 | 制造商:Freescale Semiconductor 功能描述:AUDIO COLDFIRE - Trays |
| SCF5250 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:SCF5250 Integrated ColdFire Microprocessor |
| SCF5250AG120 | 功能描述:微处理器 - MPU AMADEUS PLUS 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 |
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