PIC16F72-I/ML Microchip Technology, PIC16F72-I/ML Datasheet - Page 38

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

Specifications of PIC16F72-I/ML

• Core Size: 8-Bit
• Program Memory Size: 3.5KB (2K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI
• Number Of I /o: 22
• Program Memory Type: FLASH
• 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
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28QFN4 - SOCKET TRANS ICE 28QFN W/CABLEAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: PIC16F72-I/MLR; PIC16F72-I/MLR

PICmicro MID-RANGE MCU FAMILY
2.3.3
DS31002A-page 2-8
Tuning the Oscillator Circuit
Since Microchip devices have wide operating ranges (frequency, voltage, and temperature;
depending on the part and version ordered) and external components (crystals, capacitors,...),
of varying quality and manufacture; validation of operation needs to be performed to ensure that
the component selection will comply with the requirements of the application.
There are many factors that go into the selection and arrangement of these external components.
These factors include:
• amplifier gain
• desired frequency
• resonant frequency(s) of the crystal
• temperature of operation
• supply voltage range
• start-up time
• stability
• crystal life
• power consumption
• simplification of the circuit
• use of standard components
• combination which results in fewest components
1997 Microchip Technology Inc.