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| 型号： | MCIMX251AJM4A |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA400 |
| 封装： | 17 X 17 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-400 |
| 文件页数： | 130/140页 |
| 文件大小： | 1416K |
| 代理商： | MCIMX251AJM4A |
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i.MX25 Applications Processor for Automotive Products, Rev. 8
Freescale Semiconductor
9
2.1
Special Signal Considerations
Special signal considerations are listed in Table 4. The package contact assignment is found in Section 4,
“Package Information and Contact Assignment.” Signal descriptions are provided in the reference manual.
.
SSI(2)
I2S/SSI/AC97
interface
Connectivity
peripherals
The SSI is a full-duplex serial port that allows the processor to communicate
with a variety of serial protocols, including the Freescale Semiconductor SPI
standard and the inter-IC sound bus standard (I2S). The SSIs
interface to the AUDMUX for flexible audio routing.
TSC (and ADC) Touchscreen
controller (and
A/D converter)
Multimedia
peripherals
The touchscreen controller and associated Analog-to-Digital Converter
(ADC) together provide a resistive touchscreen solution. The module
implements simultaneous touchscreen control and auxiliary ADC operation
for temperature, voltage, and other measurement functions.
UART(5)
UART
interface
Connectivity
peripherals
Each of the UART modules supports the following serial data
transmit/receive protocols and configurations:
7- or 8-bit data words, one or two stop bits, programmable parity (even,
odd, or none)
Programmable baud rates up to 4 MHz. This is a higher maximum baud
rate than the 1.875 MHz specified by the TIA/EIA-232-F standard and
previous Freescale UART modules. 32-byte FIFO on Tx and 32 half-word
FIFO on Rx supporting auto-baud
IrDA-1.0 support (up to SIR speed of 115200 bps)
Option to operate as 8-pins full UART, DCE, or DTE
USBOTG
USBHOST
High-speed
USB
on-the-go
Connectivity
peripherals
The USB module provides high-performance USB On-The-Go (OTG) and
host functionality (up to 480 Mbps), compliant with the USB 2.0 specification,
the OTG supplement, and the ULPI 1.0 Low Pin Count specification. The
module has DMA capabilities for handling data transfer between internal
buffers and system memory. An OTG HS PHY and HOST FS PHY are also
integrated.
Table 4. Signal Considerations
Signal
Description
BAT_VDD
DryIce backup power supply input.
CLK0
Clock-out pin; renders the internal clock visible to users for debugging. The clock source is controllable
through CRM registers. This pin can also be configured (through muxing) to work as a normal GPIO.
CLK_SEL
Used to select the ARM clock source from MPLL out or from external EXT_ARMCLK. In normal operation,
CLK_SEL should be connected to GND.
EXT_ARMCLK
Primarily for Freescale factory use. There is no internal on-chip pull-up/down on this pin, so it must be
externally connected to GND or VDD. Aside from factory use, this pin can also be configured (through
muxing) to work as a normal GPIO.
MESH_C, MESH_D Wire-mesh tamper detect pins that can be routed at the PCB board to detect attempted tampering of a
protected wire. When security measures are implemented, MESH_C should be pulled-up or connected to
NVCC_DRYICE and triggers a tamper event when floating or when connected to MESH_D. MESH_D
should be pulled-down or connected to GND and triggers an event when floating or connected to
MESH_C. These pins can be left unconnected if the DryIce security features are not being used.
Table 3. i.MX25 Digital and Analog Modules (continued)
Block
Mnemonic
Block Name
Subsystem
Brief Description
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCIMX251AJM4AR2 | 功能描述:处理器 - 专门应用 IMX25 1.2 AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432 |
| MCIMX251AVM4 | 功能描述:处理器 - 专门应用 SENNA IMX25 1.1 AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432 |
| MCIMX253CJM4 | 功能描述:处理器 - 专门应用 IMX25 INDUSTRIAL RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432 |
| MCIMX253CJM4A | 功能描述:处理器 - 专门应用 IMX25 1.2 INDUST RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432 |
| MCIMX253CVM4 | 功能描述:处理器 - 专门应用 SENNA IMX25 1.1 INDUSTRIAL RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432 |
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