参数资料
型号: PIC18F252-E/SO
厂商: Microchip Technology
文件页数: 60/134页
文件大小: 0K
描述: IC MCU CMOS 40MHZ 16K FLSH28SOIC
产品培训模块: Asynchronous Stimulus
标准包装: 27
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,LVD,POR,PWM,WDT
输入/输出数: 23
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 1.5K x 8
电压 - 电源 (Vcc/Vdd): 4.2 V ~ 5.5 V
数据转换器: A/D 5x10b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 管件
Micrel, Inc.
KSZ8864RMN
April 2012
31
M9999-043012-1.5
Switch MAC3/MAC4 SW3/SW4-RMII Interface
The Reduced Media Independent Interface (RMII) specifies a low pin count Media Independent Interface (MII). The
KSZ8864RMN supports RMII interface at Port 3 and port 4 switch sides and provides a common interface at MAC3 and
MAC4 layer in the device, and has the following key characteristics:
Supports 10Mbps and 100Mbps data rates.
Uses a single 50 MHz clock reference (provided internally or externally): in internal mode, the chip provides reference
clock from SMxRXC pin to SMxTXC/SMxREFCLK pin and the reference clock-in pin of the opposite RMII; in external
mode, the chip receives 50MHz reference clock from an external oscillator or opposite RMII interface to
SW4TXC/SM4REFCLK pin only.
Provides independent 2-bit wide (bi-bit) transmit and receive data paths.
Table 4 shows two types of RMII connections of MAC to MAC and MAC to PHY,
The first is an external MAC connects to SW3/4-RMII with ‘PHY mode’.
The second is an external PHY connects to SW3/4-RMII with ‘MAC mode’.
When the strap pin P1LED0 is pulled down, the switch MAC4 is SW4-RMII mode after power up reset or warm reset.
When the strap pin P2LED0 is pulled down, the switch MAC3 is SW3-RMII mode after power up reset or warm reset.
相关PDF资料
PDF描述
VE-24J-IY-S CONVERTER MOD DC/DC 36V 50W
PIC18F4320T-I/PT IC MCU FLASH 4KX16 EEPROM 44TQFP
DSPIC33FJ64MC710A-E/PT IC DSPIC MCU/DSP 64K 100-TQFP
PIC16F876-10E/SP IC MCU FLASH 8KX14 EE 28DIP
PIC16F876-10E/SO IC MCU FLASH 8KX14 EE 28SOIC
相关代理商/技术参数
参数描述
PIC18F252-I/SO 功能描述:8位微控制器 -MCU 32KB 1536 RAM 23 I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F252-I/SO 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 18F252 SOIC28
PIC18F252-I/SOG 功能描述:8位微控制器 -MCU 32KB 1536 RAM 23I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F252-I/SP 功能描述:8位微控制器 -MCU 32KB 1536 RAM 23I/O RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F252-I/SP 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 18F252 SDIL28