PIC24FJ32GA004T-I/PT Microchip Technology, PIC24FJ32GA004T-I/PT Datasheet - Page 178
![32KB, Flash, 8192bytes-RAM, 16MIPS, 35I/O, 16-bit Family,nanoWatt 44 TQFP 10x10x](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC24FJ32GA004T-I/PT
Manufacturer Part Number
PIC24FJ32GA004T-I/PT
Description
32KB, Flash, 8192bytes-RAM, 16MIPS, 35I/O, 16-bit Family,nanoWatt 44 TQFP 10x10x
Manufacturer
Microchip Technology
Series
PIC® 24Fr
Datasheets
1.PIC24FJ16GA002-ISS.pdf
(52 pages)
2.PIC24FJ16GA002-ISS.pdf
(268 pages)
3.PIC24FJ16GA002-ISS.pdf
(22 pages)
Specifications of PIC24FJ32GA004T-I/PT
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, PMP, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
32KB (11K x 24)
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-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DM240011 - KIT STARTER MPLAB FOR PIC24F MCUAC162088 - HEADER MPLAB ICD2 24FJ64GA004 28AC164335 - MODULE SKT FOR 10X10 PM3 44TQFPDV164033 - KIT START EXPLORER 16 MPLAB ICD2
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PIC24FJ32GA004T-I/PTTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC24FJ32GA004T-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC24FJ32GA004T-I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC24FJ16GA002-ISS PDF datasheet
- PIC24FJ16GA002-ISS PDF datasheet #2
- PIC24FJ16GA002-ISS PDF datasheet #3
- Current page: 178 of 268
- Download datasheet (2Mb)
PIC24FJ64GA004 FAMILY
19.1
The RTCC module registers are organized into three
categories:
• RTCC Control Registers
• RTCC Value Registers
• Alarm Value Registers
19.1.1
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 19-1).
By writing the RTCVALH byte, the RTCC Pointer value,
RTCPTR<1:0> bits, decrement by one until they reach
‘00’. Once they reach ‘00’, the MINUTES and SEC-
ONDS value will be accessible through RTCVALH and
RTCVALL until the pointer value is manually changed.
TABLE 19-1:
The Alarm Value register window (ALRMVALH and
ALRMVALL)
(ALCFGRPT<9:8>) to select the desired Alarm register
pair (see Table 19-2).
By writing the ALRMVALH byte, the Alarm Pointer
value, ALRMPTR<1:0> bits, decrement by one until
they reach ‘00’. Once they reach ‘00’, the ALRMMIN
and ALRMSEC value will be accessible through
ALRMVALH and ALRMVALL until the pointer value is
manually changed.
EXAMPLE 19-1:
DS39881D-page 178
RTCPTR
<1:0>
asm volatile("push w7");
asm volatile("push w8");
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"); //set the RTCWREN bit
asm volatile("pop w8");
asm volatile("pop w7");
00
01
10
11
RTCC Module Registers
REGISTER MAPPING
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
bits
TABLE 19-2:
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.
19.1.2
In order to perform a write to any of the RTCC Timer
registers, the RTCWREN bit (RCFGCAL<13>) must be
set (refer to Example 19-1).
ALRMPTR
Note:
Note:
<1:0>
00
01
10
11
This only applies to read operations and
not write operations.
WRITE LOCK
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 code
follow the procedure in Example 19-1.
ALRMVAL<15:8> ALRMVAL<7:0>
ALRMVAL REGISTER
MAPPING
Alarm Value Register Window
ALRMMNTH
ALRMMIN
ALRMWD
2010 Microchip Technology Inc.
—
ALRMSEC
ALRMDAY
ALRMHR
—
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