PIC32MX150F256HT-I/PT View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC32MX150F256HT-I/PT

32-bit Microcontrollers (up to 512 KB Flash and 64 KB SRAM) with Audio/Graphics/Touch (HMI), CAN, USB, and Advanced Analog

Microchip Technology 

PIC32MX1XX/2XX/5XX 64/100-PIN FAMILY

21.0 REAL-TIME CLOCK AND

CALENDAR (RTCC)

Note:

This data sheet summarizes the features

of the PIC32MX1XX/2XX/5XX 64/100-pin

family of devices. It is not intended to be

a comprehensive reference source. To

complement the information in this data

sheet, refer to Section 29. “Real-Time

Clock and Calendar (RTCC)”

(DS60001125) in the “PIC32 Family

Reference Manual”, which is available

from the Microchip web site

(www.microchip.com/PIC32).

The PIC32 RTCC module is intended for applications in

which accurate time must be maintained for extended

periods of time with minimal or no CPU intervention.

Low-power optimization provides extended battery

lifetime while keeping track of time.

FIGURE 21-1:

RTCC BLOCK DIAGRAM

The following are the key features of this module:

• Time: hours, minutes and seconds

• 24-hour format (military time)

• Visibility of one-half second period

• Provides calendar: Weekday, date, month and

year

• Alarm intervals are configurable for half of a

second, one second, 10 seconds, one minute, 10

minutes, one hour, one day, one week, one month

and one year

• Alarm repeat with decrementing counter

• Alarm with indefinite repeat: Chime

• Year range: 2000 to 2099

• Leap year correction

• BCD format for smaller firmware overhead

• Optimized for long-term battery operation

• Fractional second synchronization

• User calibration of the clock crystal frequency with

auto-adjust

• Calibration range: 0.66 seconds error per month

• Calibrates up to 260 ppm of crystal error

• Requirements: External 32.768 kHz clock crystal

• Alarm pulse or seconds clock output on 

RTCC pin

32.768 kHz Input

from Secondary

Oscillator (SOSC)

CAL<9:0>

RTCC Prescalers

0.5s

Alarm

Event

RTCC Timer

Comparator

Compare Registers

with Masks

Repeat Counter

RTCVAL

ALRMVAL

RTCTIME

HR, MIN, SEC

RTCDATE

YEAR, MONTH, DAY, WDAY

ALRMTIME

HR, MIN, SEC

ALRMDATE

MONTH, DAY, WDAY

RTCC Interrupt Logic

Set RTCC Flag

Alarm Pulse 0

Seconds Pulse 1

RTCC

RTSECSEL

RTCOE

 2014-2017 Microchip Technology Inc.

DS60001290E-page 221

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