PIC24HJ128GP204T-I/ML Microchip Technology, PIC24HJ128GP204T-I/ML Datasheet - Page 237

• Manufacturer Part Number: PIC24HJ128GP204T-I/ML
• Description: 16-bit MCU, 128KB Flash,DMA,40 MIPS,nanoWatt 44 QFN 8x8x0.9mm T/R
• Manufacturer: Microchip Technology
• Series: PIC® 24Hr

Specifications of PIC24HJ128GP204T-I/ML

• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: I²C, IrDA, LIN, PMP, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 128KB (43K x 24)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 13x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC24HJ128GP204T-I/MLTR

22.0
This chapter discusses the Real-Time Clock and
Calendar
PIC24HJ32GP302/304, PIC24HJ64GPX02/X04 and
PIC24HJ128GPX02/X04 devices, and its operation.
The following are some of the key features of this
module:
FIGURE 22-1:
© 2011 Microchip Technology Inc.
Note 1: This data sheet summarizes the features
32.768 kHz Input
from S
2: Some registers and associated bits
OSC
REAL-TIME CLOCK AND
CALENDAR (RTCC)
PIC24HJ32GP302/304, PIC24HJ64GPX02/X04 AND PIC24HJ128GPX02/X04
of
PIC24HJ64GPX02/X04
PIC24HJ128GPX02/X04
devices. It is not intended to be a compre-
hensive reference source. To comple-
ment the information in this data sheet,
refer to Section 37. “Real-Time Clock
and Calendar (RTCC)” (DS70301) of
the “dsPIC33F/PIC24H Family Refer-
ence Manual”, which is available from the
Microchip website (www.microchip.com).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
Oscillator
(RTCC)
the
RTCC BLOCK DIAGRAM
Alarm
Event
module,
RTCC Clock Domain
PIC24HJ32GP302/304,
Compare Registers
RTCC Prescalers
Repeat Counter
RTCC Timer
Comparator
with Masks
available
0.5s
families
RTCC Interrupt Logic
and
of
in
on
CPU Clock Domain
ALRMVAL
ALCFGRPT
• Time: hours, minutes and seconds
• 24-hour format (military time)
• Calendar: weekday, date, month and year
• Alarm configurable
• Year range: 2000 to 2099
• Leap year correction
• BCD format for compact firmware
• Optimized for low-power operation
• User calibration with auto-adjust
• Calibration range: ±2.64 seconds error per month
• Requirements: External 32.768 kHz clock crystal
• Alarm pulse or seconds clock output on RTCC pin
The RTCC module is intended for applications where
accurate time must be maintained for extended periods
of time with minimum to no intervention from the CPU.
The RTCC module is optimized for low-power usage to
provide extended battery lifetime while keeping track of
time.
The RTCC module is a 100-year clock and calendar
with automatic leap year detection. The range of the
clock is from 00:00:00 (midnight) on January 1, 2000 to
23:59:59 on December 31, 2099.
The hours are available in 24-hour (military time)
format. The clock provides a granularity of one second
with half-second visibility to the user.
RCFGCAL
RTCVAL
RTCOE
Alarm Pulse
RTCC Interrupt
DS70293E-page 237
RTCC Pin