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参数资料
| 型号： | PIC16F74T-I/L |
| 厂商： | Microchip Technology |
| 文件页数： | 68/104页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 4KX14 A/D 44PLCC |
| 产品培训模块： | Asynchronous Stimulus |
| 标准包装： | 500 |
| 系列： | PIC® 16F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 33 |
| 程序存储器容量： | 7KB（4K x 14） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 192 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 数据转换器： | A/D 8x8b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 带卷 (TR) |
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Micrel, Inc.
KSZ8851-16MLLJ
March 2010
58
M9999-030210-1.0
TXQ Memory Information Register (0x78 – 0x79): TXMIR
This register indicates the amount of free memory available in the TXQ of the QMU module.
Bit
Default Value
R/W
Description
15-13
-
RO
Reserved.
12-0
-
RO
TXMA Transmit Memory Available
The amount of memory available is represented in units of byte. The TXQ memory is
used for both frame payload, control word.
Note: Software must be written to ensure that there is enough memory for the next
transmit frame including control information before transmit data is written to the TXQ.
0x7A – 0x7B: Reserved
Receive Frame Header Status Register (0x7C – 0x7D): RXFHSR
This register indicates the received frame header status information, the received frames are reported in RXFCTR
register. This register contains the status information for the frame received and the CPU can read so many times same
as the frame count value in the RXFCTR.
Bit
Default Value
R/W
Description
15
-
RO
RXFV Receive Frame Valid
When this bit is set, it indicates that the present frame in the receive packet memory is
valid. 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 current
frame is still in the process of receiving.
14
-
RO
Reserved
13
-
RO
RXICMPFCS Receive ICMP Frame Checksum Status
When this bit is set, the KSZ8851 received ICMP frame checksum field is incorrect.
12
-
RO
RXIPFCS Receive IP Frame Checksum Status
When this bit is set, the KSZ8851 received IP header checksum field is incorrect.
11
-
RO
RXTCPFCS Receive TCP Frame Checksum Status
When this bit is set, the KSZ8851 received TCP frame checksum field is incorrect.
10
-
RO
RXUDPFCS Receive UDP Frame Checksum Status
When this bit is set, the KSZ8851 received UDP frame checksum field is incorrect.
9-8
-
RO
Reserved
7
-
RO
RXBF Receive Broadcast Frame
When this bit is set, it indicates that this frame has a broadcast address.
6
-
RO
RXMF Receive Multicast Frame
When this bit is set, it indicates that this frame has a multicast address (including the
broadcast address).
5
-
RO
RXUF Receive Unicast Frame
When this bit is set, it indicates that this frame has a unicast address.
4
-
RO
RXMR Receive MII Error
When set, it indicates that there is an MII symbol error on the received frame.
3
-
RO
RXFT Receive Frame Type
When this bit is set, it indicates that the frame is an Ethernet-type frame (frame length is
greater 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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相关代理商/技术参数 |
参数描述 |
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| PIC16F753-E/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/P | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14PDIP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/SL | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14SOIC 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-E/ST | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 14TSSOP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
| PIC16F753-I/ML | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 128 RAM, 8MHZ INT. OSC, 9-BIT DAC - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC PIC MCU 2K FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 35KB Flsh 128 R 8MHz Int Osc 9-bit DAC |
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