PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 620

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
31.3.2
31.3.2.1
DS31031A-page 31-8
2000
1800
1600
1400
1200
1000
I
RC Measurements
DD
800
600
400
200
0
0.0
vs. Frequency
† R = 10 k
‡ R = 5 k
I
taken with all I/O as inputs, either pulled high or low. That is, there are no floating inputs, nor are
any pins driving an output (with a load).
The I
the DCS (Data Collection System). The DCS accurately reflects the device and specified com-
ponent values, that is, it does not add stray capacitance or current.
For the RC measurement, the DCS selects a resistor and capacitor value, and then varies the
voltage over the specified range. As the voltage is changed, the frequency of operation changes.
For a fixed RC, as V
has been taken, the RC value is changed and the measurements are taken again. Each point on
the graph corresponds to a device voltage, resistor value (R), and capacitor value (C).
Figure 31-9:
DD
0.5
is the current (I) that the device consumes when the device is in operating mode. This test is
DD
vs. Frequency charts measure the results on a Microchip automated bench setup, called
1.0
Example Typical I
DD
1.5
increases, the frequency increases. After the measurement, at this RC,
Frequency (MHz)
2.0
DD
†
vs. Frequency (RC Mode @ 22 pF, 25 C)
2.5
3.0
3.5
Shaded area is
beyond recommended range
1997 Microchip Technology Inc.
4.0
‡
4.5
6.0V
5.5V
5.0V
4.5V
4.0V
3.5V
3.0V
2.5V