PIC16F72-I/SP Microchip Technology, PIC16F72-I/SP Datasheet - Page 35

• Manufacturer Part Number: PIC16F72-I/SP
• Description: IC PIC MCU FLASH 2KX14 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F72-I/SP

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 28-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: I2C, SPI, SSP
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 5 Channel
• Data Rom Size: 8 B
• Height: 3.3 mm
• Length: 34.67 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 7.24 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.3.1
1997 Microchip Technology Inc.
Oscillator / Resonator Start-up
As the device voltage increases from V
required for the oscillator to start oscillating depends on many factors. These include:
• Crystal / resonator frequency
• Capacitor values used (C1 and C2 in
• Device V
• System temperature
• Series resistor value (and type) if used (Rs in
• Oscillator mode selection of device (which selects the gain of the internal oscillator inverter)
• Crystal quality
• Oscillator circuit layout
• System noise
Figure 2-2
oscillator waveform can be quite low (less than 50% of device V
tered at V
Figure 2-2: Example Oscillator / Resonator Start-up Characteristics
DD
DD
graphs an example oscillator / resonator start-up. The peak-to-peak voltage of the
Maximum V
/2 (refer to
rise time
DD
parameters D033
of System
Voltage
0V
Crystal Start-up Time
Figure
and
Section 2. Oscillator
SS
Device V
, the oscillator will start its oscillations. The time
D043
2-1)
Figure
in the
DD
2-1)
“Electrical Specifications”
Time
DD
) where the waveform is cen-
DS31002A-page 2-5
section).
2