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參數(shù)資料
型號:
PIC16LF77-I/ML
廠商:
Microchip Technology
文件頁數(shù):
68/104頁
文件大?。?/td>
0K
描述:
IC MCU FLASH 8KX14 A/D 44QFN
標準包裝:
45
系列:
PIC® 16F
核心處理器:
PIC
芯體尺寸:
8-位
速度:
20MHz
連通性:
I²C,SPI,UART/USART
外圍設備:
欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù):
33
程序存儲器容量:
14KB(8K x 14)
程序存儲器類型:
閃存
RAM 容量:
368 x 8
電壓 - 電源 (Vcc/Vdd):
2 V ~ 5.5 V
數(shù)據(jù)轉換器:
A/D 8x8b
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:
管件
產(chǎn)品目錄頁面:
641 (CN2011-ZH PDF)
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Micrel, Inc.KSZ8851-16MLLJMarch 201058M9999-030210-1.0TXQ Memory Information Register (0x78 – 0x79): TXMIRThis register indicates the amount of free memory available in the TXQ of the QMU module.BitDefault ValueR/WDescription15-13-ROReserved.12-0-ROTXMA Transmit Memory AvailableThe amount of memory available is represented in units of byte. The TXQ memory isused for both frame payload, control word.Note: Software must be written to ensure that there is enough memory for the nexttransmit frame including control information before transmit data is written to the TXQ.0x7A – 0x7B: ReservedReceive Frame Header Status Register (0x7C – 0x7D): RXFHSRThis register indicates the received frame header status information, the received frames are reported in RXFCTRregister. This register contains the status information for the frame received and the CPU can read so many times sameas the frame count value in the RXFCTR.BitDefault ValueR/WDescription15-RORXFV Receive Frame ValidWhen this bit is set, it indicates that the present frame in the receive packet memory isvalid. The status information currently in this location is also valid.When clear, it indicates that there is either no pending receive frame or that the currentframe is still in the process of receiving.14-ROReserved13-RORXICMPFCS Receive ICMP Frame Checksum StatusWhen this bit is set, the KSZ8851 received ICMP frame checksum field is incorrect.12-RORXIPFCS Receive IP Frame Checksum StatusWhen this bit is set, the KSZ8851 received IP header checksum field is incorrect.11-RORXTCPFCS Receive TCP Frame Checksum StatusWhen this bit is set, the KSZ8851 received TCP frame checksum field is incorrect.10-RORXUDPFCS Receive UDP Frame Checksum StatusWhen this bit is set, the KSZ8851 received UDP frame checksum field is incorrect.9-8-ROReserved7-RORXBF Receive Broadcast FrameWhen this bit is set, it indicates that this frame has a broadcast address.6-RORXMF Receive Multicast FrameWhen this bit is set, it indicates that this frame has a multicast address (including thebroadcast address).5-RORXUF Receive Unicast FrameWhen this bit is set, it indicates that this frame has a unicast address.4-RORXMR Receive MII ErrorWhen set, it indicates that there is an MII symbol error on the received frame.3-RORXFT Receive Frame TypeWhen this bit is set, it indicates that the frame is an Ethernet-type frame (frame length isgreater than 1500 bytes). When clear, it indicates that the frame is an IEEE 802.3 frame.This bit is not valid for runt frames.
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