PIC24FJ64GB004-I/ML Microchip Technology, PIC24FJ64GB004-I/ML Datasheet - Page 239

• Manufacturer Part Number: PIC24FJ64GB004-I/ML
• Description: IC, 16BIT MCU, PIC24F, 32MHZ, QFN-44
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 24Fr

Specifications of PIC24FJ64GB004-I/ML

• Controller Family/series: PIC24
• Ram Memory Size: 8KB
• Cpu Speed: 32MHz
• No. Of Timers: 5
• Interface: I2C, LIN, SPI, UART, USB
• No. Of Pwm Channels: 5
• Core Size: 16 Bit
• Program Memory Size: 64 KB
• Core Processor: PIC
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Embedded Interface Type: I2C, LIN, SPI, UART, USB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1004 - PIC24 BREAKOUT BOARD
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

20.0
The RTCC provides the user with a Real-Time Clock
and Calendar (RTCC) function that can be calibrated.
Key features of the RTCC module are:
• Operates in Deep Sleep mode
• Selectable clock source
• Provides hours, minutes and seconds using
• Visibility of one half second period
• Provides calendar – weekday, date, month and
FIGURE 20-1:
© 2009 Microchip Technology Inc.
SOSC/LPRC
Note:
24-hour format
year
Input from
Oscillator
REAL-TIME CLOCK AND
CALENDAR (RTCC)
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
Section 29. “Real-Time Clock and
Calendar (RTCC)” (DS39696).
Alarm
Event
Alarm Registers with Masks
RTCC Clock Domain
RTCC Prescalers
Family
RTCC BLOCK DIAGRAM
Repeat Counter
RTCC Timer
Comparator
0.5 Sec
Reference
1 Sec
RTCC Interrupt Logic
Manual”,
PIC24FJ64GB004 FAMILY
Preliminary
CPU Clock Domain
ALCFGRPT
• Alarm-configurable for half a second, one second,
• Alarm repeat with decrementing counter
• Alarm with indefinite repeat chime
• Year 2000 to 2099 leap year correction
• BCD format for smaller software overhead
• Optimized for long-term battery operation
• User calibration of the 32.768 kHz clock
20.1
The user can select between the SOSC crystal oscillator
or the LPRC Low-Power Internal RC Oscillator as the
clock reference for the RTCC module. This is configured
using the RTCOSC (CW4<5>) Configuration bit. This
gives the user an option to trade off system cost,
accuracy and power consumption, based on the overall
system needs.
The SOSC and RTCC will both remain running while
the device is held in Reset with MCLR and will continue
running after MCLR is released.
RCFGCAL
ALRMVAL
RTCVAL
10 seconds, one minute, 10 minutes, one hour,
one day, one week, one month or one year
crystal/32K INTRC frequency with periodic
auto-adjust
RTCC Source Clock
Alarm Pulse
Interrupt
RTCC
Clock Source
RTCOE
RTSECSEL<1:0>
10
01
00
ALMINSEC
ALMTHDY
WKDYHR
DS39940C-page 237
ALWDHR
MINSEC
MTHDY
YEAR
RTCC
Pin