PIC16F616-ESLASHML datasheet(65/172 Pages) APEX

tên linh kiện	PIC16F616-E/ML

Giải thích chi tiết về linh kiện	14-Pin Flash-Based, 8-Bit CMOS Microcontrollers

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Preliminary

DS41288A-page 63

PIC16F616/16HV616

8.11

Comparator Hysteresis

Each comparator has built-in hysteresis that is user

enabled by setting the C1HYS or C2HYS bits of the

CM2CON1 register. The hysteresis feature can help

filter noise and reduce multiple comparator output

transitions when the output is changing state.

Figure 8-9 shows the relationship between the analog

input levels and digital output of a comparator with and

without hysteresis. The output of the comparator

changes from a low state to a high state only when the

analog voltage at VIN+ rises above the upper hysteresis

threshold (VH+). The output of the comparator changes

from a high state to a low state only when the analog

voltage at VIN+ falls below the lower hysteresis

threshold (VH-).

FIGURE 8-9:

COMPARATOR HYSTERESIS

–

VIN+

VIN-

Output

Note:

The black areas of the comparator output represents the uncertainty due to input offsets and response time.

VH-

VH+

VIN-

V+

VIN+

Output

(Without Hysteresis)

Output

(With Hysteresis)

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