參數(shù)資料
型號: PIC18LF24K22-I/SS
廠商: Microchip Technology
文件頁數(shù): 33/71頁
文件大?。?/td> 0K
描述: IC PIC MCU 16KB FLASH 28SSOP
產(chǎn)品培訓模塊: 8-bit PIC® Microcontroller Portfolio
標準包裝: 47
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 64MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,HLVD,POR,PWM,WDT
輸入/輸出數(shù): 24
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): 1.8 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 19x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 管件
2010-2012 Microchip Technology Inc.
DS41412E-page 39
PIC18(L)F2X/4XK22
2.8
PLL Frequency Multiplier
A Phase-Locked Loop (PLL) circuit is provided as an
option for users who wish to use a lower frequency
oscillator circuit or to clock the device up to its highest
rated frequency from the crystal oscillator. This may be
useful for customers who are concerned with EMI due
to high-frequency crystals or users who require higher
clock speeds from an internal oscillator.
2.8.1
PLL IN EXTERNAL OSCILLATOR
MODES
The PLL can be enabled for any of the external
oscillator modes using the OSC1/OSC2 pins by either
setting the PLLCFG bit (CONFIG1H<4>), or setting the
PLLEN bit (OSCTUNE<6>). The PLL is designed for
input frequencies of 4 MHz up to 16 MHz. The PLL then
multiplies the oscillator output frequency by four to
produce an internal clock frequency up to 64 MHz.
Oscillator frequencies below 4 MHz should not be used
with the PLL.
2.8.2
PLL IN HFINTOSC MODES
The 4x frequency multiplier can be used with the
internal oscillator block to produce faster device clock
speeds than are normally possible with the internal
oscillator. When enabled, the PLL multiplies the
HFINTOSC by four to produce clock rates up to
64 MHz.
Unlike external clock modes, when internal clock
modes are enabled, the PLL can only be controlled
through software. The PLLEN control bit of the
OSCTUNE register is used to enable or disable the
PLL operation when the HFINTOSC is used.
The PLL is designed for input frequencies of 4 MHz up
to 16 MHz.
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PIC18LF24K22T-I/MV 功能描述:8位微控制器 -MCU 16KB Flash 768b RAM SERIAL EE IND 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
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