PIC18F24K50 View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'PIC18F24K50' PDF : 44 Pages View PDF
PIC18(L)F2X/4XK50
TABLE 3-7:
4-bit
Command
PROGRAMMING DATA MEMORY
Data Payload
Core Instruction
Step 1: Direct access to data EEPROM.
0000
0000
9E A6
9C A6
BCF EECON1, EEPGD
BCF EECON1, CFGS
Step 2: Set the data EEPROM Address Pointer.
0000
0000
0000
0000
0E <Addr>
6E A9
OE <AddrH>
6E AA
MOVLW <Addr>
MOVWF EEADR
MOVLW <AddrH>
MOVWF EEADRH
Step 3: Load the data to be written.
0000
0000
0E <Data>
6E A8
MOVLW <Data>
MOVWF EEDATA
Step 4: Enable memory writes.
0000
84 A6
BSF EECON1, WREN
Step 5: Initiate write.
0000
0000
0000
82 A6
00 00
00 00
BSF EECON1, WR
NOP
NOP ;write starts on 4th clock of this instruction
Step 6: Poll WR bit, repeat until the bit is clear.
0000
0000
0000
0010
50 A6
6E F5
00 00
<MSB><LSB>
MOVF EECON1, W, 0
MOVWF TABLAT
NOP
Shift out data(1)
Step 7: Hold PGC low for time P10.
Step 8: Disable writes.
0000
94 A6
BCF EECON1, WREN
Repeat steps 2 through 8 to write more data.
Note 1: See Figure 4-4 for details on shift out data timing.
2012 Microchip Technology Inc.
DS41630B-page 21
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