PIC32MX664F064LT-I/PT Microchip Technology Inc., PIC32MX664F064LT-I/PT Datasheet - Page 147

• Manufacturer Part Number: PIC32MX664F064LT-I/PT
• Description: 100 TQFP 12X12X1MM T/R, 100 PINS, 64KB FLASH, 32KB RAM, 80 MHZ, USB, ETHERNET, 4
• Manufacturer: Microchip Technology Inc.

Specifications of PIC32MX664F064LT-I/PT

• A/d Inputs: 16-Channel, 10-Bit
• Comparators: 2
• Eeprom Memory: 0 Bytes
• Input Output: 85
• Interface: I2C/SPI/UART/USB
• Memory Type: Flash
• Number Of Bits: 32
• Package Type: 100-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 32K Bytes
• Speed: 80 MHz
• Temperature Range: –40 to +85 °C
• Timers: 5-16-bit
• Voltage, Range: 2.3-3.6 V
• Lead Free Status / Rohs Status: RoHS Compliant part

21.0
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:
© 2010 Microchip Technology Inc.
Note 1: This data sheet summarizes the features
32.768 kHz Input
from Secondary
Oscillator (S
2: Some registers and associated bits
REAL-TIME CLOCK AND
CALENDAR (RTCC)
of the PIC32MX5XX/6XX/7XX 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
(DS61125)
Reference Manual” , which is available
from
(www.microchip.com/PIC32).
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.
OSC
)
the
and
RTCC BLOCK DIAGRAM
Alarm
Event
in
Microchip
Compare Registers
RTCC Prescalers
Repeat Counter
Calendar
the
RTCC Timer
Comparator
with Masks
“PIC32
0.5s
web
RTCC Interrupt Logic
(RTCC)”
Family
site
in
ALRMVAL
RTCVAL
Following are some of 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
• Alarm intervals are configurable for half of a
• 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
• 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
PIC32MX5XX/6XX/7XX
year
second, one second, 10 seconds, one minute, 10
minutes, one hour, one day, one week, one month
and one year
auto-adjust
RTCC pin
RTCOE
Seconds Pulse
Alarm Pulse
RTCC Interrupt
YEAR, MTH, DAY
HR, MIN, SEC
HR, MIN, SEC
MTH, DAY
WKDAY
WKDAY
DS61156F-page 147
RTCC Pin