参数资料
型号: MCIMX258CJM4
厂商: Freescale Semiconductor
文件页数: 143/153页
文件大小: 0K
描述: MPU IMX25 IND 400-MAPBGA
特色产品: MCIMX25 Applications Processors
标准包装: 90
系列: i.MX25
核心处理器: ARM9
芯体尺寸: 32-位
速度: 400MHz
连通性: 1 线,CAN,EBI/EMI,以太网,I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外围设备: DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 128
程序存储器类型: 外部程序存储器
RAM 容量: 144K x 8
电压 - 电源 (Vcc/Vdd): 1.15 V ~ 1.52 V
数据转换器: A/D 3x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 400-LFBGA
包装: 托盘
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 10
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.
.
SLCD
Smart LCD
controller
Multimedia
peripherals
The SLCDC module transfers data from the display memory buffer to the
external display device.
SPBA
Shared
peripheral bus
arbiter
System control
The SPBA controls access to the shared peripherals. It supports shared
peripheral ownership and access rights to an owned peripheral.
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.
Table 3. i.MX25 Digital and Analog Modules (continued)
Block
Mnemonic
Block Name
Subsystem
Brief Description
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