PIC24FJ64GB004-I/ML Microchip Technology, PIC24FJ64GB004-I/ML Datasheet - Page 21

• 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

3.9
The procedure for reading configuration memory is
similar to the procedure for reading code memory,
except that 16-bit data words are read (with the upper
byte read being all ‘0’s) instead of 24-bit words.
Configuration Words are read one register at a time.
TABLE 3-9:
© 2009 Microchip Technology Inc.
Step 1: Exit Reset vector.
Step 2: Initialize TBLPAG, the Read Pointer (W6) and the Write Pointer (W7) for TBLRD instruction.
Step 3: Read the Configuration register and write it to the VISI register (located at 784h), and clock out the
Step 4: Repeat Step 3 three times to read CW3 to CW1.
Step 5: Reset device internal PC.
Command
(Binary)
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0001
0000
0000
0000
Reading Configuration Words
VISI register using the REGOUT command.
SERIAL INSTRUCTION EXECUTION FOR READING ALL CONFIGURATION MEMORY
000000
040200
000000
200xx0
880190
2xxxx6
207847
000000
BA0BB6
000000
000000
<VISI>
000000
040200
000000
(Hex)
Data
NOP
GOTO
NOP
MOV
MOV
MOV
MOV
NOP
TBLRDL
NOP
NOP
Clock out contents of VISI register
NOP
GOTO
NOP
0x200
#<CW4Address23:16>, W0
W0, TBLPAG
#<CW4Address15:0>, W6
#VISI, W7
[W6++], [W7]
0x200
Table 3-9 shows the ICSP programming details for
reading the Configuration Words. Note that the
TBLPAG register must be loaded with 00h, and the
Read Pointer, W6, is initialized to the lower 16 bits of
the Configuration Word location.
PIC24FJ64GA1/GB0
Description
DS39934B-page 21