Difference between revisions of "Micro2451"
From FriendlyELEC WiKi
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(→核心板管脚定义) |
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|35 || 35 || AIN0 || 36 || 36 || AIN1 | |35 || 35 || AIN0 || 36 || 36 || AIN1 | ||
+ | |- | ||
+ | |37 || 37 || TOUT2/GPB2 || 38 || 38 || TOUT3/GPB3 | ||
+ | |- | ||
+ | |39 || 39 || TCLK/GPB4 || 40 || 40 || IIS0LRCK | ||
+ | |- | ||
+ | |41 || 41 || IIS0SCLK || 42 || 42 || IIS0CDCLK | ||
+ | |- | ||
+ | |43 || 43 || IIS0SDI || 44 || 44 || IIS0SDO | ||
+ | |- | ||
+ | |45 || 45 || TOUT0/GPB0 || 46 || 46 || EINT10/GPG2 | ||
+ | |- | ||
+ | |47 || 47 || UART2_TX || 48 || 48 || UART2_RX | ||
+ | |- | ||
+ | |49 || 49 || UART1_TX || 50 || 50 || UART1_RX | ||
+ | |- | ||
+ | |51 || 51 || UART0_TX || 52 || 52 || UART0_RX | ||
+ | |- | ||
+ | |53 || 53 || UART0_CTS || 54 || 54 || USRT0_RTS | ||
+ | |- | ||
+ | |55 || 55 || I2C0SDA || 56 || 56 || I2C0SCL | ||
|} | |} | ||
:说明 | :说明 |
Revision as of 05:32, 15 July 2015
1 介绍
Micro2451是友善之臂专门为Micro2440核心板老用户设计的一款替代产品,二者管脚完全兼容,底板共用。它采用ARM926EJ架构的三星S3C2451主控芯片,运行主频400Mhz, 最高可达533Mhz, 由于采用了新的芯片生产工艺,功耗更低,性能更加优越,而且价格也更有优势。
2 资源特性
- CPU: Samsung S3C2451,运行主频400Mhz
- RAM: 64M DDR2
- Flash: 标配256M闪存,可选1G
3 核心板管脚定义
- P1 管脚定义
P1 Pin# PCB Pin# Name P1 Pin# PCB Pin# Name 1 1 VDD_5V 2 2 DGND 3 3 EINT19/GPG11 4 4 EINT18/GPG10 5 5 EINT17/GPG9 6 6 EINT16/GPG8 7 7 EINT15/GPG7 8 8 EINT14/GPG6 9 9 EINT13/GPG5 10 10 EINT11/GPG3 11 11 EINT12/GPG4 12 12 EINT6/GPF6 13 13 EINT5/GPF5 14 14 EINT4/GPF4 15 15 EINT3/GPF3 16 16 EINT2/GPF2 17 17 EINT1/GPF1 18 18 EINT0/GPF0 19 19 GPL5 20 20 MMC0CLK 21 21 MMC0CMD 22 22 MMC0DATA2 23 23 MMC0DATA3 24 24 MMC0DATA0 25 25 MMC0DATA1 26 26 BOOT_CS 27 27 NC 28 28 M_nRESET 29 29 DM_UDEV 30 30 DP_UDEV 31 31 DM_UHOST 32 32 DP_UHOST 33 33 AIN2 34 34 RTC_BATT 35 35 AIN0 36 36 AIN1 37 37 TOUT2/GPB2 38 38 TOUT3/GPB3 39 39 TCLK/GPB4 40 40 IIS0LRCK 41 41 IIS0SCLK 42 42 IIS0CDCLK 43 43 IIS0SDI 44 44 IIS0SDO 45 45 TOUT0/GPB0 46 46 EINT10/GPG2 47 47 UART2_TX 48 48 UART2_RX 49 49 UART1_TX 50 50 UART1_RX 51 51 UART0_TX 52 52 UART0_RX 53 53 UART0_CTS 54 54 USRT0_RTS 55 55 I2C0SDA 56 56 I2C0SCL
- 说明
- VDD_5V:给核心板供电的电源输入脚,输入范围4.7-5.6V,推荐5V/500mA
- BOOT_CS: 启动模式选择,悬空或高电平为SD卡启动,低电平为NandFlash启动
- M_nRESET:复位信号输入,低电平有效。此信号通过复位芯片给核心板的CPU和内存等芯片提供复位信号,所以外部只需接一个按键就可以
- DM_UDEV&DP_UDEV:USB 2.0 Device信号,没有OTG功能
- DM_UHOST&DP_UHOST : USB 1.1 Host信号,需外加15K下拉电阻
- RTC_BATT:RTC备份电池输入,直接接3V电池。核心板上电后由板子内部的3.3V给RTC供电,不上电时由备份电池供电,自动切换
- AIN0-AIN2:CPU自带的12-Bit ADC输入,通道0-2,采集范围:0-3.3V
4 机械尺寸
- 需要更详细的尺寸请下载:File:Micro2451-1506-Dimensions(dxf).zip
5 资源链接
- Schematic: File:Micro2451-1506-Schematic.pdf
- Dimensions:File:Micro2451-1506-Dimensions(dxf).zip