DSPIC33EP256MU810-E/PF Microchip Technology, DSPIC33EP256MU810-E/PF Datasheet - Page 413

• Manufacturer Part Number: DSPIC33EP256MU810-E/PF
• Description: 100 PINS, 256KB Flash, 28KB RAM, 60 MHz, USB, 2xCAN, 15 DMA 100 TQFP 14x14x1mm T
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33EPr

Specifications of DSPIC33EP256MU810-E/PF

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 60 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, QEI, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 83
• Program Memory Size: 256KB (85.5K x 24)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 12K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 32x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 100-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

26.0
This chapter discusses the Real-Time Clock and
Calendar
dsPIC33EPXXXMU806/810/814
PIC24EPXXXGU810/814 devices, and its operation.
FIGURE 26-1:
 2009-2011 Microchip Technology Inc.
RTCC Pin
Note 1: This data sheet summarizes the features
SOSCO
SOSCI
dsPIC33EPXXXMU806/810/814 and PIC24EPXXXGU810/814
2: Some registers and associated bits
REAL-TIME CLOCK AND
CALENDAR (RTCC)
of the dsPIC33EPXXXMU806/810/814
and PIC24EPXXXGU810/814 families 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
(DS70584) of the “dsPIC33E/PIC24E
Family Reference Manual”, which is
available from the Microchip web site
(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.
dsPIC33E/PIC24E
32.768 kHz
(RTCC)
Oscillator
and
RTCC BLOCK DIAGRAM
Set RTCIF Flag
RTCOE
module,
CAL<7:0>
Prescaler
RTSECSEL
Calendar
1
0
1 Hz
available
Toggle
RTCC Timer
(RTCC)”
RTCC Alarm
WEEKDAY
WEEKDAY
MINUTES
MINUTES
and
Preliminary
MONTH
MONTH
in
on
—
Some of the key features of this module are:
• 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
with minimum to no intervention from the CPU. The
RTCC module is optimized for low-power usage to pro-
vide 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.
SECONDS
SECONDS
YEAR
HOUR
HOUR
DATE
DATE
RTCPTR<1:0>
ALRMPTR<1:0>
11
10
01
00
10
01
00
ALRMVAL
RTCVAL
DS70616E-page 413