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| 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： | 3/56页 |
| 文件大小： | 918K |
| 代理商： | SCF5249LAG120 |
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SCF5249 Functional Overview
SCF5249 Integrated ColdFire Microprocessor Data Sheet, Rev. 3
Freescale Semiconductor
11
5.16 IDE and SmartMedia Interfaces
The SCF5249 system bus allows connection of an IDE hard disk drive and SmartMedia flash card with a
minimum of external hardware. The external hardware consists of bus buffers for address and data and are
intended to reduce the load on the bus and prevent SDRAM and Flash accesses to propagate to the IDE
bus. The control signals for the buffers are generated in the SCF5249.
5.17 Analog/Digital Converter (ADC)
The four channel ADC is a based on the Sigma-Delta concept with 12-bit resolution. The digital portion
of the ADC is provided internally. The analog voltage comparator must be provided externally as well as
an external integrator circuit (resistor/capacitor) which is driven by the ADC output. A software interrupt
is provided when the ADC measurement cycle is complete.
5.18 Flash Memory Card Interface
The interface is Sony MemoryStick and SecureDigital compatible. However, there is no hardware support
for MagicGate.
5.19 I2C Module
The two-wire I2C bus interface, which is compliant with the Philips I2C bus standard, is a bidirectional
serial bus that exchanges data between devices. The I2C bus minimizes the interconnection between
devices in the end system and is best suited for applications that need occasional bursts of rapid
communication over short distances among several devices. Bus capacitance and the number of unique
addresses limit the maximum communication length and the number of devices that can be connected.
5.20 Chip-Selects
Two programmable chip-select outputs provide signals that enable glueless connection to external memory
and peripheral circuits. The base address, access permissions and automatic wait-state insertion are
programmable with configuration registers. These signals also interface to 16-bit ports.
CS0 is active after reset to provide boot-up from external FLASH/ROM.
5.21 GPIO Interface
A total of 44 General Purpose inputs and 46 General Purpose outputs are available. These are multiplexed
with various other signals. Eight of the GPIO inputs have edge sensitive interrupt capability.
5.22 Interrupt Controller
The interrupt controller provides user-programmable control of a total of 57 interrupts. There are 49
internal interrupt sources. In addition, there are 8 GPIOs where interrupts can be generated on the rising
or falling edge of the pin. All interrupts are autovectored and interrupt levels are programmable.
相关PDF资料 |
PDF描述 |
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| SCF5250CAG120 | 32-BIT, 120 MHz, MICROPROCESSOR, PQFP144 |
| SCN2651C1N28 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP28 |
| SCN2661AC1A28-T | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC28 |
| SCN2661AA1F28 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, CDIP28 |
| SCN68661AC1N28 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP28 |
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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