PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 251
PIC18F2220
Manufacturer Part Number
PIC18F2220
Description
28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2220.pdf
(388 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F2220-E/SO
Manufacturer:
MIC
Quantity:
20 000
Part Number:
PIC18F2220-I/SO
Manufacturer:
MICROCH
Quantity:
20 000
Part Number:
PIC18F2220-I/SP
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
PIC18F2220T-I/SO
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- Current page: 251 of 388
- Download datasheet (7Mb)
23.4.2
The fail-safe condition is terminated by either a device
Reset or by entering a power managed mode. On Reset,
the controller starts the primary clock source specified in
Configuration Register 1H (with any required start-up
delays that are required for the oscillator mode, such as
OST or PLL timer). The INTOSC multiplexer provides the
system clock until the primary clock source becomes
ready (similar to a Two-speed Start-up). The clock system
source is then switched to the primary clock (indicated by
the OSTS bit in the OSCCON register becoming set). The
Fail-Safe Clock Monitor then resumes monitoring the
peripheral clock.
FIGURE 23-4:
2003 Microchip Technology Inc.
Sample Clock
Note:
CM Output
OSCFIF
System
EXITING FAIL-SAFE OPERATION
Output
Clock
(Q)
The system clock is normally at a much higher frequency than the sample clock. The relative frequencies in
this example have been chosen for clarity.
FSCM TIMING DIAGRAM
CM Test
PIC18F2220/2320/4220/4320
The primary clock source may never become ready dur-
ing start-up. In this case, operation is clocked by the
INTOSC multiplexer. The OSCCON register will remain in
its Reset state until a power managed mode is entered.
Entering a power managed mode by loading the
OSCCON register and executing a SLEEP instruction
will clear the fail-safe condition. When the fail-safe
condition is cleared, the clock monitor will resume
monitoring the peripheral clock.
CM Test
Oscillator
Failure
Detected
Failure
CM Test
DS39599C-page 249
Related parts for PIC18F2220
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
20-Pin USB Flash Microcontrollers
Manufacturer:
MICROCHIP [Microchip Technology]
Datasheet:
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
Microcontrollers (MCU) 48KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
Microcontrollers (MCU) 64KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm T/R
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm T/R
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm T/
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm TUBE
Manufacturer:
Microchip Technology
Datasheet:
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer:
Microchip Technology
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TR
Manufacturer:
Microchip Technology
Part Number:
Description:
SURFACE MOUNT POWER INDUCTORS
Manufacturer:
RCD [RCD COMPONENTS INC.]
Datasheet: