PIC18LF2431-I/SO Microchip Technology, PIC18LF2431-I/SO Datasheet - Page 92
![IC MCU FLASH 8KX16 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18LF2431-I/SO
Manufacturer Part Number
PIC18LF2431-I/SO
Description
IC MCU FLASH 8KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16LF627A-IP.pdf
(8 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC18F2331-ISO.pdf
(392 pages)
5.PIC18F2331-ISO.pdf
(8 pages)
6.PIC18F2331-ISO.pdf
(6 pages)
7.PIC18F2331-ISO.pdf
(16 pages)
8.PIC18LF2331-ISO.pdf
(4 pages)
9.PIC18LF2331-ISO.pdf
(40 pages)
10.PIC18F4331-EP.pdf
(400 pages)
Specifications of PIC18LF2431-I/SO
Core Size
8-Bit
Program Memory Size
16KB (8K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
Number Of I /o
24
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Controller Family/series
PIC18
No. Of I/o's
24
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
No. Of Timers
4
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
EUSART, I2C, SPI, SSP
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
24
Number Of Timers
1 x 8
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM183021, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18LF2431-I/SO
Manufacturer:
BOURNS
Quantity:
30 000
- PIC16F616T-ISL PDF datasheet
- PIC16LF627A-IP PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC18F2331-ISO PDF datasheet #4
- PIC18F2331-ISO PDF datasheet #5
- PIC18F2331-ISO PDF datasheet #6
- PIC18F2331-ISO PDF datasheet #7
- PIC18LF2331-ISO PDF datasheet #8
- PIC18LF2331-ISO PDF datasheet #9
- PIC18F4331-EP PDF datasheet #10
- Current page: 92 of 400
- Download datasheet (7Mb)
PIC18F2331/2431/4331/4431
7.7
Data EEPROM memory has its own code-protect bits in
Configuration Words. External read and write opera-
tions are disabled if either of these mechanisms are
enabled.
The microcontroller itself can both read and write to the
internal data EEPROM, regardless of the state of the
code-protect Configuration bit. Refer to Section 22.0
“Special Features of the CPU” for additional
information.
EXAMPLE 7-3:
TABLE 7-1:
DS39616C-page 90
INTCON
EEADR
EEDATA
EECON2
EECON1
IPR2
PIR2
PIE2
Legend:
LOOP
Name
Operation During Code-Protect
CLRF
BCF
BCF
BCF
BSF
BSF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BTFSC
BRA
INCFSZ
BRA
BCF
BSF
EEPROM Address Register
EEPROM Data Register
EEPROM Control Register 2 (not a physical register)
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used during Flash/EEPROM access.
GIE/GIEH
OSCFIP
OSCFIF
OSCFIE
EEPGD
Bit 7
REGISTERS ASSOCIATED WITH DATA EEPROM MEMORY
EEADR
EECON1, CFGS
EECON1, EEPGD
INTCON, GIE
EECON1, WREN
EECON1, RD
55h
EECON2
0AAh
EECON2
EECON1, WR
EECON1, WR
$-2
EEADR, F
Loop
EECON1, WREN
INTCON, GIE
DATA EEPROM REFRESH ROUTINE
PEIE/GIEL TMR0IE
CFGS
Bit 6
—
—
—
Bit 5
—
—
—
—
INT0IE
FREE
Bit 4
EEIP
EEIF
EEIE
; Start at address 0
; Set for memory
; Set for Data EEPROM
; Disable interrupts
; Enable writes
; Loop to refresh array
; Read current address
;
; Write 55h
;
; Write 0AAh
; Set WR bit to begin write
; Wait for write to complete
; Increment address
; Not zero, do it again
; Disable writes
; Enable interrupts
Preliminary
WRERR
RBIE
Bit 3
—
—
—
7.8
The data EEPROM is a high-endurance, byte-
addressable array that has been optimized for the
storage of frequently changing information (e.g.,
program variables or other data that are updated
often). Frequently changing values will typically be
updated more often than specification D124 or D124A.
If this is not the case, an array refresh must be
performed. For this reason, variables that change
infrequently (such as constants, IDs, calibration, etc.)
should be stored in Flash program memory.
A simple data EEPROM refresh routine is shown in
Example 7-3.
TMR0IF
WREN
LVDIP
LVDIF
LVDIE
Note:
Bit 2
Using the Data EEPROM
INT0IF
If data EEPROM is only used to store con-
stants and/or data that changes rarely, an
array refresh is likely not required. See
specification D124 or D124A.
Bit 1
WR
—
—
—
CCP2IP 1--1 -1-1 1--1 -1-1
CCP2IF 0--0 -0-0 0--0 -0-0
CCP2IE 0--0 -0-0 0--0 -0-0
Bit 0
RBIF
RD
© 2007 Microchip Technology Inc.
0000 000x 0000 000u
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
xx-0 x000 uu-0 u000
POR, BOR
Value on:
Value on
all other
Resets
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