PIC18F23K20-E/ML Microchip Technology, PIC18F23K20-E/ML Datasheet - Page 21

• Manufacturer Part Number: PIC18F23K20-E/ML
• Description: 8 KB Enh Flash, 768 RAM, 25 I/O Pb Free, Nanowatt XLP 28 QFN 6x6mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F23K20-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TABLE 3-7:
© 2009 Microchip Technology Inc.
Step 1: Direct access to data EEPROM.
Step 2: Set the data EEPROM Address Pointer.
Step 3: Load the data to be written.
Step 4: Enable memory writes.
Step 5: Initiate write.
Step 6: Poll WR bit, repeat until the bit is clear.
Step 7: Hold PGC low for time P10.
Step 8: Disable writes.
Repeat steps 2 through 8 to write more data.
Note 1: See Figure 4-4 for details on shift out data timing.
Command
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0010
0000
4-bit
PROGRAMMING DATA MEMORY
<MSB><LSB>
Data Payload
OE <AddrH>
0E <Addr>
0E <Data>
9E A6
9C A6
6E A9
6E AA
6E A8
84 A6
82 A6
50 A6
6E F5
94 A6
00 00
00 00
00 00
BCF EECON1, EEPGD
BCF EECON1, CFGS
MOVF EECON1, W, 0
MOVWF TABLAT
NOP
Shift out data
MOVLW <Addr>
MOVWF EEADR
MOVLW <AddrH>
MOVWF EEADRH
MOVLW <Data>
MOVWF EEDATA
BSF EECON1, WREN
BSF EECON1, WR
NOP
NOP ;write starts on 4th clock of this instruction
BCF EECON1, WREN
Advance Information
(1)
PIC18F2XK20/4XK20
Core Instruction
DS41297F-page 21