• 參數(shù)資料
    型號: PIC16LF77T-I/PTG
    廠商: Microchip Technology
    文件頁數(shù): 56/104頁
    文件大?。?/td> 0K
    描述: IC MCU FLASH 8KX14 44TQFP
    標準包裝: 1,200
    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(shè)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(zhuǎn)換器: A/D 8x8b
    振蕩器型: 外部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 44-TQFP
    包裝: 帶卷 (TR)
    Micrel, Inc.
    KSZ8851-16MLLJ
    March 2010
    47
    M9999-030210-1.0
    On-Chip Bus Control Register (0x20 – 0x21): OBCR
    This register controls the on-chip bus clock speed for the KSZ8851-16MLLJ. The default of the on-chip bus clock speed is
    125MHz. When the external host CPU is running at a higher clock rate, the on-chip bus should be adjusted for the best
    performance.
    Bit
    Default Value
    R/W
    Description
    15-7
    -
    RW
    Reserved.
    6
    0
    RW
    Output Pin Drive Strength
    Bi-directional or output pad drive strength selection.
    0: 8 mA; 1: 16 mA
    5-3
    -
    RW
    Reserved.
    2
    0
    RW
    On-Chip Bus Clock Selection
    0: 125MHz (default setting is divided by 1, Bit[1:0]=00)
    1: NA (reserved)
    1-0
    0x0
    RW
    On-Chip Bus Clock Divider Selection
    00: Divided by 1; 01: Divided by 2; 10: Divided by 3; 11: NA (reserved).
    For example to contol the bus clock speed as below:
    If Bit 2 = 0 and this value is set 00 to select 125 MHz.
    If Bit 2 = 0 and this value is set 01 to select 62.5 MHz.
    EEPROM Control Register (0x22 – 0x23): EEPCR
    To support an external EEPROM, pulled-up the EED_IO pin to High; otherwise, it is pulled-down to Low. If an external
    EEPROM is not used, the software programs the host MAC address. If an EEPROM is used in the design, the chip host
    MAC address is loaded from the EEPROM immediately after reset. The KSZ8851-16MLLJ allows the software to access
    (read and write) the EEPROM directly; that is, the EEPROM access timing can be fully controlled by the software if the
    EEPROM Software Access bit is set.
    Bit
    Default Value
    R/W
    Description
    15-6
    -
    RO
    Reserved.
    5
    0
    WO
    EESRWA EEPROM Software Read or Write Access
    0: software read enable to access EEPROM when software access enabled (bit4=1)
    1: software write enable to access EEPROM when software access enabled (bit4=1).
    4
    0
    RW
    EESA EEPROM Software Access
    1: enable software to access EEPROM through bit 3 to bit 0.
    0: disable software to access EEPROM.
    3
    -
    RO
    EESB EEPROM Status Bit
    Data Receive from EEPROM. This bit directly reads the EED_IO pin.
    2-0
    0x0
    RW
    EECB EEPROM Control Bits
    Bit 2: Data Transmit to EEPROM. This bit directly controls the device’s EED_IO pin.
    Bit 1: Serial Clock. This bit directly controls the device’s EESK pin.
    Bit 0: Chip Select for EEPROM. This bit directly controls the device’s EECS pin.
    相關(guān)PDF資料
    PDF描述
    PIC16F1937-I/MV MCU 14KB FLASH 512B RAM 40-UQFN
    PIC12C671-10/P IC MCU OTP 1KX14 A/D 8DIP
    PIC16C56A-20I/P IC MCU OTP 1KX12 18DIP
    PIC18F44K20-I/MV MCU 16KB FLASH 768B RAM 40-UQFN
    PIC16C622A-20/P IC MCU OTP 2KX14 COMP 18DIP
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    PIC16LF818-I/ML 功能描述:8位微控制器 -MCU 1.75KB 128RAM 16 I/O Ind Temp QFN28 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 安裝風格:SMD/SMT
    PIC16LF818-I/MLTSL 功能描述:8位微控制器 -MCU 1.75 KB FL 128 RAM 16 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 安裝風格:SMD/SMT
    PIC16LF818-I/P 功能描述:8位微控制器 -MCU 1.75KB 128RAM 16 I/O Ind Temp PDIP18 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 安裝風格:SMD/SMT
    PIC16LF818-I/PTSL 功能描述:8位微控制器 -MCU 1.75 KB FL 128 RAM 16 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 安裝風格:SMD/SMT
    PIC16LF818-I/SO 功能描述:8位微控制器 -MCU 1.75KB 128RAM 16 I/O Ind Temp SOIC18 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 安裝風格:SMD/SMT