PIC24FJ256GB110-I/PF Microchip Technology, PIC24FJ256GB110-I/PF Datasheet - Page 69

• Manufacturer Part Number: PIC24FJ256GB110-I/PF
• Description: IC PIC MCU FLASH 256K 100TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ256GB110-I/PF

• Program Memory Type: FLASH
• Program Memory Size: 256KB (85.5K x 24)
• Package / Case: 100-TQFP, 100-VQFP
• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 83
• Ram Size: 16K 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: 16 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 84
• 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, DM240001, DM240011
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1004 - PIC24 BREAKOUT BOARDDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.6.2
If a Flash location has been erased, it can be pro-
grammed using table write instructions to write an
instruction word (24-bit) into the write latch. The
TBLPAG register is loaded with the 8 Most Significant
Bytes of the Flash address. The TBLWTL and TBLWTH
instructions write the desired data into the write latches
EXAMPLE 5-7:
EXAMPLE 5-8:
 2009 Microchip Technology Inc.
; Setup a pointer to data Program Memory
; Setup NVMCON for programming one word to data Program Memory
// C example using MPLAB C30
//Set up NVMCON for word programming
//Set up pointer to the first memory location to be written
//Perform TBLWT instructions to write latches
MOV
MOV
MOV
MOV
MOV
TBLWTL W2, [W0]
TBLWTH W3, [W0++]
MOV
MOV
DISI
MOV
MOV
MOV
MOV
BSET
NOP
NOP
unsigned int offset;
unsigned long progAddr = 0xXXXXXX;
unsigned int progDataL = 0xXXXX;
unsigned char progDataH = 0xXX;
NVMCON = 0x4003;
TBLPAG = progAddr>>16;
offset = progAddr & 0xFFFF;
__builtin_tblwtl(offset, progDataL);
__builtin_tblwth(offset, progDataH);
asm(“DISI #5”);
__builtin_write_NVM();
PROGRAMMING A SINGLE WORD
OF FLASH PROGRAM MEMORY
#tblpage(PROG_ADDR), W0
W0, TBLPAG
#tbloffset(PROG_ADDR), W0
#LOW_WORD, W2
#HIGH_BYTE, W3
#0x4003, W0
W0, NVMCON
#5
#0x55, W0
W0, NVMKEY
#0xAA, W0
W0, NVMKEY
NVMCON, #WR
PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY
(ASSEMBLY LANGUAGE CODE)
PROGRAMMING A SINGLE WORD OF FLASH PROGRAM MEMORY
(C LANGUAGE CODE)
PIC24FJ256GB110 FAMILY
;
;Initialize PM Page Boundary SFR
;Initialize a register with program memory address
;
;
; Write PM low word into program latch
; Write PM high byte into program latch
;
; Set NVMOP bits to 0011
; Disable interrupts while the KEY sequence is written
; Write the key sequence
; Start the write cycle
; Insert two NOPs after the erase
; Command is asserted
// Address of word to program
// Data to program lower word
// Data to program upper byte
// Initialize NVMCON
// Initialize PM Page Boundary SFR
// Initialize lower word of address
// Write to address low word
// Write to upper byte
// Block interrupts with priority < 7
// for next 5 instructions
// C30 function to perform unlock
// sequence and set WR
and specify the lower 16 bits of the program memory
address to write to. To configure the NVMCON register
for a word write, set the NVMOP bits (NVMCON<3:0>)
to ‘0011’. The write is performed by executing the
unlock sequence and setting the WR bit, as shown in
Example 5-7. An equivalent procedure in C, using the
MPLAB C30 compiler and built-in hardware functions,
is shown in Example 5-8.
DS39897C-page 69