전자부품 데이터시트 검색엔진 |
|
PIC18F2X 데이터시트(PDF) 39 Page - Microchip Technology |
|
PIC18F2X 데이터시트(HTML) 39 Page - Microchip Technology |
39 / 496 page 2010 Microchip Technology Inc. Preliminary DS41412C-page 39 PIC18(L)F2X/4XK22 2.6 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. 2.6.1 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 4 to produce an internal clock frequency up to 64 MHz. Oscillator frequencies below 4 MHz should not be used with the PLL. 2.6.2 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 4 to produce clock rates up to 64 MHz. Unlike external clock modes, 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. |
유사한 부품 번호 - PIC18F2X |
|
유사한 설명 - PIC18F2X |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |