參數(shù)資料
型號: PIC18F442T-I/ML
廠商: Microchip Technology
文件頁數(shù): 60/134頁
文件大?。?/td> 0K
描述: IC MCU FLASH 8KX16 EE A/D 44QFN
標(biāo)準(zhǔn)包裝: 1,600
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,LVD,POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 16KB(8K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 4.2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VQFN 裸露焊盤
包裝: 帶卷 (TR)
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.
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PIC18F4431-E/P 功能描述:8位微控制器 -MCU 16KB 768 RAM 34 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC18F4431-E/P 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 18F4431 DIP40
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PIC18F4431-E/PT 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 18F4431 TQFP44