欢迎访问ic37.com |
会员登录 免费注册
发布采购

PIC18F8620-I/PT 参数 Datasheet PDF下载

PIC18F8620-I/PT图片预览
型号: PIC18F8620-I/PT
PDF下载: 下载PDF文件 查看货源
内容描述: 八十〇分之六十四引脚高性能1 Mbit的增强型闪存微控制器与A / D [64/80-Pin High Performance 1 Mbit Enhanced FLASH Microcontrollers with A/D]
分类和应用: 闪存微控制器和处理器外围集成电路PC时钟
文件页数/大小: 366 页 / 6797 K
品牌: MICROCHIP [ MICROCHIP ]
 浏览型号PIC18F8620-I/PT的Datasheet PDF文件第25页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第26页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第27页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第28页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第30页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第31页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第32页浏览型号PIC18F8620-I/PT的Datasheet PDF文件第33页  
PIC18FXX20  
If the main oscillator is configured for HS-PLL mode, an  
oscillator start-up time (TOST), plus an additional PLL  
time-out (TPLL), will occur. The PLL time-out is typically  
2 ms and allows the PLL to lock to the main oscillator  
frequency. A timing diagram, indicating the transition  
from the Timer1 oscillator to the main oscillator for  
HS-PLL mode, is shown in Figure 2-10.  
FIGURE 2-10:  
TIMING FOR TRANSITION BETWEEN TIMER1 AND OSC1 (HS WITH PLL)  
TT1P  
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4  
Q4  
Q1  
T1OSI  
OSC1  
TOST  
TPLL  
OSC2  
TSCS  
4
TOSC  
PLL Clock  
Input  
1
2
3
5
6
7
8
Internal System  
Clock  
SCS  
(OSCCON<0>)  
Program Counter  
PC  
PC + 2  
PC + 4  
Note 1: TOST = 1024 TOSC (drawing not to scale).  
If the main oscillator is configured in the RC, RCIO, EC  
or ECIO modes, there is no oscillator start-up time-out.  
Operation will resume after eight cycles of the main  
oscillator have been counted. A timing diagram, indi-  
cating the transition from the Timer1 oscillator to the  
main oscillator for RC, RCIO, EC and ECIO modes, is  
shown in Figure 2-11.  
FIGURE 2-11:  
TIMING FOR TRANSITION BETWEEN TIMER1 AND OSC1 (RC, EC)  
Q3  
Q4  
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4  
Q1  
TT1P  
T1OSI  
OSC1  
TOSC  
6
1
4
5
7
8
2
3
OSC2  
Internal System  
Clock  
SCS  
(OSCCON<0>)  
TSCS  
Program  
Counter  
PC  
PC + 2  
PC + 4  
Note 1: RC Oscillator mode assumed.  
2003 Microchip Technology Inc.  
Advance Information  
DS39609A-page 27  
 复制成功!