PIC24FJ64GA006-I/PT Microchip Technology, PIC24FJ64GA006-I/PT Datasheet - Page 158

• Manufacturer Part Number: PIC24FJ64GA006-I/PT
• Description: IC PIC MCU FLASH 32KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ64GA006-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 64KB (22K x 24)
• Package / Case: 64-TFQFP
• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, PMP, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC24FJ
• Core: PIC
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737, 53276-922, EWDSPIC
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DM240011, DV164033, MA240013, AC164127, DM240001
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Controller Family/series: PIC24
• No. Of I/o's: 53
• Ram Memory Size: 8KB
• Cpu Speed: 32MHz
• No. Of Timers: 5
• Embedded Interface Type: I2C, SPI, UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM240011 - KIT STARTER MPLAB FOR PIC24F MCUDV164033 - KIT START EXPLORER 16 MPLAB ICD2MA160011 - DAUGHTER BOARD PICDEM LCD 16F91XDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC24FJ128GA010 FAMILY
18.1
The RTCC module registers are organized into three
categories:
• RTCC Control Registers
• RTCC Value Registers
• Alarm Value Registers
18.1.1
To limit the register interface, the RTCC Timer and
Alarm Time registers are accessed through corre-
sponding register pointers. The RTCC Value register
window (RTCVALH and RTCVALL) uses the RTCPTR
bits (RCFGCAL<9:8>) to select the desired Timer
register pair (see Table 18-1). By writing the RTCVALH
byte, the RTCC Pointer value, RTCPTR<1:0>, decre-
ments by one until it reaches ‘00’. Once it reaches ‘00’,
the MINUTES and SECONDS value will be accessible
through RTCVALH and RTCVALL until the pointer
value is manually changed.
TABLE 18-1:
The Alarm Value register window (ALRMVALH and
ALRMVALL)
(ALCFGRPT<9:8>) to select the desired Alarm register
pair (see Table 18-2).
EXAMPLE 18-1:
DS39747E-page 158
asm volatile("disi #5");
asm volatile("mov #0x55, w7");
asm volatile("mov w7, _NVMKEY");
asm volatile("mov #0xAA, w8");
asm volatile("mov w8, _NVMKEY");
asm volatile("bset _RCFGCAL, #13");
Note:
RTCPTR
<1:0>
00
01
10
11
RTCC Module Registers
REGISTER MAPPING
To avoid accidental writes to the timer, it is recommended that the RTCWREN bit (RCFGCAL<13>) is kept clear at
any other time. For the RTCWREN bit to be set, there is only 1 instruction cycle time window allowed between the
55h/AA sequence and the setting of RTCWREN; therefore, it is recommended that the code in Example 18-1 be
followed.
uses
RTCVAL<15:8>
RTCVAL REGISTER MAPPING
RTCC Value Register Window
WEEKDAY
MINUTES
MONTH
SETTING THE RTCWREN BIT
—
the
ALRMPTR
RTCVAL<7:0>
SECONDS
HOURS
YEAR
DAY
//set the RTCWREN bit
bits
By writing the ALRMVALH byte, the Alarm Pointer
value, ALRMPTR<1:0>, decrements by one until it
reaches ‘00’. Once it reaches ‘00’, the ALRMMIN and
ALRMSEC
ALRMVALH and ALRMVALL until the pointer value is
manually changed.
TABLE 18-2:
Considering that the 16-bit core does not distinguish
between 8-bit and 16-bit read operations, the user must
be aware that when reading either the ALRMVALH or
ALRMVALL bytes will decrement the ALRMPTR<1:0>
value. The same applies to the RTCVALH or RTCVALL
bytes with the RTCPTR<1:0> being decremented.
18.1.2
In order to perform a write to any of the RTCC Timer
registers, the RTCWREN bit (RCFGCAL<13>) must be
set (refer to Example 18-1).
ALRMPTR
Note:
<1:0>
00
01
10
11
This only applies to read operations and
not write operations.
WRITE LOCK
value
ALRMVAL<15:8> ALRMVAL<7:0>
ALRMVAL REGISTER
MAPPING
Alarm Value Register Window
ALRMMNTH
ALRMMIN
ALRMWD
will
© 2009 Microchip Technology Inc.
—
be
accessible
ALRMSEC
ALRMDAY
ALRMHR
—
through