PIC18LF2523-I/SP Microchip Technology, PIC18LF2523-I/SP Datasheet - Page 82

• Manufacturer Part Number: PIC18LF2523-I/SP
• Description: IC PIC MCU FLASH 16KX16 28-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF2523-I/SP

• Core Size: 8-Bit
• Program Memory Size: 32KB (16K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Controller Family/series: PIC18
• No. Of I/o's: 25
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1.5KB
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Package: 28SPDIP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/USART
• On-chip Adc: 10-chx12-bit
• Number Of Timers: 4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2423/2523/4423/4523
EXAMPLE 6-3:
DS39755B-page 80
READ_BLOCK
MODIFY_WORD
ERASE_BLOCK
Req
Seq
WRITE_BUFFER_BACK1
WRITE_BYTE_TO_HREGS1
MOVWF
MOVLW
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
TBLRD*+
MOVF
MOVWF
DECFSZ
BRA
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BCF
BSF
BSF
BCF
MOVLW
MOVWF
BSF
BSF
TBLRD*-
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
MOVFF
MOVWF
TBLWT+*
DECFSZ
BRA
EECON2
0AAh
D’64’
COUNTER
BUFFER_ADDR_HIGH
FSR0H
BUFFER_ADDR_LOW
FSR0L
CODE_ADDR_UPPER
TBLPTRU
CODE_ADDR_HIGH
TBLPTRH
CODE_ADDR_LOW
TBLPTRL
TABLAT, W
POSTINC0
COUNTER, F
READ_BLOCK
DATA_ADDR_HIGH
FSR0H
DATA_ADDR_LOW
FSR0L
NEW_DATA_LOW
POSTINC0
NEW_DATA_HIGH
INDF0
CODE_ADDR_UPPER
TBLPTRU
CODE_ADDR_HIGH
TBLPTRH
CODE_ADDR_LOW
TBLPTRL
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
EECON1, FREE
INTCON, GIE
55h
EECON2
EECON1, WR
INTCON, GIE
BUFFER_ADDR_HIGH
FSR0H
BUFFER_ADDR_LOW
FSR0L
D’32’
COUNTER
POSTINC0,WREG
TABLAT
COUNTER
WRITE_BYTE_TO_HREGS1
WRITING TO FLASH PROGRAM MEMORY
; write 55h
; point to buffer
; Load TBLPTR with the base
; address of the memory block
; 6 LSB = '0'
; read into TABLAT, and inc
; get data
; store data
; done?
; repeat
; point to buffer
; update buffer word
; load TBLPTR with the base
; address of the memory block
; access Flash program memory
; enable write to memory
; enable Row Erase operation
; disable interrupts
; write 0AAh
; start erase (CPU stall)
; re-enable interrupts
; dummy read - decrement pointer
; point to buffer
; write first 32 bytes to Flash
; get low byte of buffer data
; present data to table latch
; short write to holding
; register using pre-increment
; loop until buffers are full
; number of bytes in erase block
; point to Flash program memory
; number of bytes in holding register
Preliminary
© 2007 Microchip Technology Inc.