PIC16F872 Datasheet, PDF (126/160 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH Microcontroller

PIC16F872
FIGURE 14-1: PIC16FXXX VOLTAGE-FREQUENCY GRAPH
6.0 V
5.5 V
5.0 V
4.5 V
4.0 V
3.5 V
3.0 V
2.5 V
2.0 V
Frequency
20 MHz
FIGURE 14-2: PIC16LFXXX VOLTAGE-FREQUENCY GRAPH
6.0 V
5.5 V
5.0 V
4.5 V
4.0 V
3.5 V
3.0 V
2.5 V
2.0 V
Equation ¹
Equation ²
4 MHz 10 MHz 20 MHz
Frequency
Equation 1: FMAX = (6.0 MHz/V) (VDDAPPMIN - 2.0 V) + 4 MHz; VDDAPPMIN = 2.0V - 3.0V
Equation 2: FMAX = (10.0 MHz/V) (VDDAPPMIN - 3.0 V) + 10 MHz; VDDAPPMIN = 3.0V - 4.0V
Note 1: VDDAPPMIN is the minimum voltage of the PICmicro^® device in the application.
Note 2: FMAX has a maximum frequency of 10MHz.
DS30221A-page 126
Preliminary
© 1999 Microchip Technology Inc.