PIC24FJ256GB106-I/MR Microchip Technology, PIC24FJ256GB106-I/MR Datasheet - Page 42

• Manufacturer Part Number: PIC24FJ256GB106-I/MR
• Description: IC, 16BIT MCU, PIC24F, 32MHZ, QFN-64
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ256GB106-I/MR

• Controller Family/series: PIC24
• No. Of I/o's: 51
• Ram Memory Size: 16KB
• Cpu Speed: 32MHz
• No. Of Timers: 5
• Core Size: 16 Bit
• Program Memory Size: 256KB
• Peripherals: ADC, Comparator, PWM, RTC, Timer
• Core Processor: PIC
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART, USB OTG
• Number Of I /o: 51
• Program Memory Type: FLASH
• 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
• Package / Case: 64-VFQFN, Exposed Pad
• 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: 52
• 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: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1004 - PIC24 BREAKOUT BOARD
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC24FJXXXGA1/GB1
5.4
5.4.1
If it is determined that the programming executive is
not present in executive memory (as described
in Section 4.2 “Confirming the Presence of the
Programming Executive”), it must be programmed
into executive memory using ICSP, as described in
Section 3.0 “Device Programming – ICSP”.
TABLE 5-5:
DS39907A-page 42
Step 1: Exit Reset vector and erase executive memory.
Step 2: Initialize pointers to read Diagnostic and Calibration Words for storage in W6-W13.
Step 3: Repeat this step 8 times to read Diagnostic and Calibration Words, storing them in W registers, W6-W13.
Step 4: Initialize the NVMCON to erase executive memory.
Step 5: Initialize Erase Pointers to first page of executive and then initiate the erase cycle.
Step 6: Repeat this step to poll the WR bit (bit 15 of NVMCON) until it is cleared by the hardware.
Command
(Binary)
00000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0001
0000
Programming the Programming
Executive to Memory
OVERVIEW
PROGRAMMING THE PROGRAMMING EXECUTIVE
000000
040200
000000
200800
880190
207F00
2000C2
000000
BA1931
000000
000000
240420
883B00
200800
880190
200001
000000
BB0881
000000
000000
A8E761
000000
000000
040200
000000
803B02
883C22
000000
<VISI>
000000
(Hex)
Data
NOP
GOTO
NOP
MOV
MOV
MOV
MOV
NOP
TBLRDL
NOP
NOP
MOV
MOV
MOV
MOV
MOV
NOP
TBLWTL
NOP
NOP
BSET
NOP
NOP
GOTO
NOP
MOV
MOV
NOP
Clock out contents of the VISI register.
NOP
0x200
#0x80, W0
W0, TBLPAG
#0x07F0, W1
#0xC, W2
[W1++].[W2++]
#0x4042, W0
W0, NVMCON
#0x80, W0
W0, TBLPAG
#0x0, W1
W1, [W1]
NVMCON, #15
0x200
NVMCON, W2
W2, VISI
Storing the programming executive to executive
memory is similar to normal programming of code
memory. Namely, the executive memory must be
erased, and then the programming executive must be
programmed 64 words at a time. Erasing the last page
of executive memory will cause the FRC oscillator
calibration settings and device diagnostic data in the
Diagnostic and Calibration Words, at addresses
8007F0h to 8007FEh, to be erased. In order to retain
this calibration, these memory locations should be read
and stored prior to erasing executive memory. They
should then be reprogrammed in the last words of pro-
gram memory. This control flow is summarized in
Table 5-5.
Description
© 2007 Microchip Technology Inc.