PIC16F74-I/P Microchip Technology, PIC16F74-I/P Datasheet - Page 624

• Manufacturer Part Number: PIC16F74-I/P
• Description: IC MCU FLASH 4KX14 A/D 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F74-I/P

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Number Of I /o: 33
• Program Memory Type: FLASH
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Package: 40PDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 33
• Interface Type: I2C/SPI/USART
• On-chip Adc: 8-chx8-bit
• Number Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Ram Size: 192 B
• Maximum Clock Frequency: 20 MHz
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PICmicro MID-RANGE MCU FAMILY
31.3.2.2
DS31031A-page 31-12
Crystal Oscillator Measurements
On the Data Collection System, there are several crystals. For this test a crystal is multiplexed
into the device circuit, and the crystal’s capacitance values can be varied. The capacitance and
voltage values are varied to determine the best characteristics (current, oscillator waveform, and
oscillator start-up), and then the currents are measured over voltage. The next crystal oscillator
is then switched in and the procedure is repeated.
Figure 31-16: Example Typical I
Figure 31-17: Example Maximum I
120
100
140
120
100
80
60
40
20
0
80
60
40
20
0
0
0
6.0V
5.5V
5.0V
4.5V
4.0V
3.5V
3.0V
2.5V
6.0V
5.5V
5.0V
4.5V
4.0V
3.5V
3.0V
2.5V
DD
50
50
DD
vs. Frequency (LP Mode, 25 C)
vs. Frequency (LP Mode, 85 C to -40 C)
Frequency (kHz)
Frequency (kHz)
100
100
1997 Microchip Technology Inc.
150
150
200
200