PIC18F23K20-E/MLQTP MICROCHIP [Microchip Technology], PIC18F23K20-E/MLQTP Datasheet - Page 39

• Manufacturer Part Number: PIC18F23K20-E/MLQTP
• Description: 28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2XK20/4XK20
FIGURE 2-7:
CLOCK SWITCH TIMING
High Speed
Low Speed
Old Clock
(1)
Start-up Time
Clock Sync
Running
New Clock
New Clk Ready
IRCF <2:0>
Select Old
Select New
System Clock
Low Speed
High Speed
Old Clock
(1)
Start-up Time
Clock Sync
Running
New Clock
New Clk Ready
IRCF <2:0>
Select Old
Select New
System Clock
Note 1: Start-up time includes T
(1024 T
) for external clocks, plus T
(approx. 2 ms) for HSPLL mode.
OST
OSC
PLL
Advance Information
© 2007 Microchip Technology Inc.
DS41303B-page 37