Summary

Designing the simplest solution to a complex problem such as

fan/motor control on a system board can often be challenging.

Microchip has simplified both the design and implementation of

such applications by introducing the new PIC12F609/HV609,

PIC12F615/HV615, PIC16F610/HV610 and PIC16F616/

HV616. The first PIC microcontrollers of their kind, the 14-pin

PIC16F616 provide an increased feature set inclusive of an

enhanced full bridge Enhanced Capture/Compare Pulse Width

Modulation (ECCP), eight 10-bit ADC channels, 2 comparators

with selectable hysteresis, 4/8 MHz internal oscillator and 2K

words of Flash program memory. The 8-pin PIC12F615, provides

a half bridge ECCP, four 10-bit ADC channels, 1 comparator

with selectable hysteresis, 4/8 MHz internal oscillator and 1K

words of Flash program memory. The simplified PIC16F610

and PIC12F609 provide similar features without the ADC

and ECCP. All of these PIC microcontrollers are available with

high voltage variants and provide an integrated shunt voltage

PIC12HV615, PIC16HV610 and PIC16HV616 provide the

ability to run as low as 2.0V, up to an unspecified user-defined

maximum voltage. The shunt regulator is active when the

These high voltage variations are ideal for cost sensitive

applications with high voltage power rails.

As with most PIC

microcontrollers, the

PIC12F609, PIC12F615,

PIC16F610, PIC16F616,

and High Voltage

variants PIC12HV609,

PIC12HV615,

PIC16HV610 and

PIC16HV616, can easily

be utilized in a wide

array of general purpose

applications. Additional

unique features make

them particularly well

suited for focused applications such as motor or fan control.

The comparator on all variants is steerable and designed with

greater hysteresis to provide the ability to use a Hall Effect

element for speed monitoring of a fan or motor. Due to the

differential signaling of the Hall Effect element, traditional

comparators do not always provide the ability to accurately

translate the varying frequency of the Hall Effect element into

a manageable digital signal. With the addition of hysteresis,

these newly designed comparators will in effect provide a trigger

window and ultimately greater ease in such translations. This,

paired with the integrated PWM, makes these products a robust

fan-control solution that is more cost effective and flexible than

traditional dedicated fan control methods.

Microc hip T e c hnology Incor porated

PIC12F609/HV609, PIC12F615/HV615,

PIC16F610/HV610 and PIC16F616/HV616

8-bit PIC®Microcontrollers with High Voltage Support and Fan Control Capabilities

Features

HV variants)

speed and/or position

or error counting

Comparator with Hysteresis