PIC18F2320-I/SO Microchip Technology, PIC18F2320-I/SO Datasheet - Page 252

• Manufacturer Part Number: PIC18F2320-I/SO
• Description: IC MCU FLASH 4KX16 EEPROM 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2320-I/SO

• Core Size: 8-Bit
• Program Memory Size: 8KB (4K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC18
• No. Of I/o's: 25
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI, I2C, USART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 2 x 8 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE4000, ICE2000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL
• Lead Free Status / Rohs Status: Details

PIC18F2220/2320/4220/4320
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:
DS39599G-page 250
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
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
© 2007 Microchip Technology Inc.
Detected
Failure
CM Test