PIC24F04KA200T-I/ST Microchip Technology, PIC24F04KA200T-I/ST Datasheet - Page 18

• Manufacturer Part Number: PIC24F04KA200T-I/ST
• Description: PIC24F Core, 4KB Flash, 512B RAM, 3V, Deep Sleep, 10-bit 500ksps ADC, CTMU, UART
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 24Fr

Specifications of PIC24F04KA200T-I/ST

• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 4KB (1.375K x 24)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC24FXXKA2XX
3.8
To read the code memory, execute a series of TBLRD
instructions and clock out the data using the REGOUT
command.
Table 3-9
reading code memory. In Step 1, the Reset vector is
exited. In Step 2, the 24-bit starting source address for
reading is loaded into the TBLPAG register and the W6
register. The upper byte of the starting source address
is stored in TBLPAG, and the lower 16 bits of the source
address are stored in W6.
TABLE 3-9:
DS39991A-page 18
Step 1: Exit Reset vector.
Step 2: Initialize TBLPAG and the Read Pointer (W6) for TBLRD instruction.
Step 3: Initialize the Write Pointer (W7) to point to the VISI register.
Step 4: Read and clock out the contents of the next two locations of code memory through the VISI register using
Step 5: Reset device internal PC.
Step 6: Repeat Steps 4 and 5 until the required code memory is read.
Command
(Binary)
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0001
0000
0000
0000
0000
0000
0000
0000
0001
0000
0000
0000
0000
0001
0000
0000
0000
Reading Code Memory
the REGOUT command.
provides the ICSP programming details for
SERIAL INSTRUCTION EXECUTION FOR READING CODE MEMORY
000000
040200
000000
200xx0
880190
2xxxx6
207847
000000
BA1B96
000000
000000
<VISI>
000000
BADBB6
000000
000000
BAD3D6
000000
000000
<VISI>
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
TBLRDH
NOP
NOP
TBLRDH.B
NOP
NOP
Clock out contents of VISI register.
NOP
TBLRDL
NOP
NOP
Clock out contents of VISI register.
NOP
GOTO
NOP
0x200
#<SourceAddress23:16>, W0
W0, TBLPAG
#<SourceAddress15:0>, W6
#VISI, W7
[W6], [W7]
[W6++], [W7]
[++W6], [W7--]
[W6++], [W7]
0x200
To minimize the reading time, the packed instruction
word format, which was used for writing, is also used
for reading (see
Pointer, W7, is initialized. In Step 4, two instruction
words are read from code memory, and clocked out of
the device through the VISI register, using the REGOUT
command. Step 4 is repeated until the required amount
of code memory is read.
Description
Figure
 2010 Microchip Technology Inc.
3-7). In Step 3, the Write