PIC18LF4220-I/P Microchip Technology, PIC18LF4220-I/P Datasheet - Page 15

• Manufacturer Part Number: PIC18LF4220-I/P
• Description: IC MCU FLASH 2KX16 EEPROM 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF4220-I/P

• Core Size: 8-Bit
• Program Memory Size: 4KB (2K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC18
• No. Of I/o's: 36
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI, I2C, USART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 2 x 8 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel
• Data Rom Size: 256 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 13
• Height: 3.81 mm
• Length: 52.26 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 13.84 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: PIC18LF4220-I/PR; PIC18LF4220-I/PR

TABLE 3-4:
 2010 Microchip Technology Inc.
Step 1: Direct access to code memory.
Step 2: Set the Table Pointer for the block to be erased.
Step 3: Enable memory writes and set up an erase.
Step 4: Perform Flash unlock sequence.
Step 5: Initiate erase.
Step 6: Wait for P11 + P10 and then disable writes.
Step 7: Load write buffer for panel.
To continue writing data, repeat step 7, where the Address Pointer is incremented by 8 at each iteration of the loop.
Command
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
1101
1101
1101
1111
0000
4-Bit
8E A6
9C A6
0E <Addr[21:16]>
6E F8
0E <Addr[15:8]>
6E F7
0E <Addr[7:0]>
6E F6
84 A6
88 A6
0E 55
6E A7
0E AA
6E A7
82 A6
00 00
94 A6
<LSB><MSB>
<LSB><MSB>
<LSB><MSB>
<LSB><MSB>
00 00
MODIFYING CODE MEMORY
Data Payload
BSF
BCF
MOVLW <Addr[21:16]>
MOVWF TBLPTRU
MOVLW <Addr[15:8]>
MOVWF TBLPTRH
MOVLW <Addr[7:0]>
MOVWF TBLPTRL
BSF
BSF
MOVLW 0X55
MOVWF EECON2
MOVLW 0XAA
MOVWF EECON2
BSF
NOP
BCF
Write 2 bytes and post-increment address by 2
Write 2 bytes and post-increment address by 2
Write 2 bytes and post-increment address by 2
Write 2 bytes and start programming
NOP - hold PGC high for time P9 at the end of 4-bit command
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
EECON1, FREE
EECON1, WR
EECON1, WREN
PIC18FX220/X320
Core Instruction
DS39592F-page 15