PIC18LF2539-I/SO Microchip Technology, PIC18LF2539-I/SO Datasheet - Page 54
![IC MCU FLASH 12KX16 EE AD 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18LF2539-I/SO
Manufacturer Part Number
PIC18LF2539-I/SO
Description
IC MCU FLASH 12KX16 EE AD 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2439-ISO.pdf
(322 pages)
3.PIC18F2439-ISO.pdf
(6 pages)
4.PIC18F2439-ISO.pdf
(34 pages)
Specifications of PIC18LF2539-I/SO
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
24KB (12K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1408 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)
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1408 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
21
Number Of Timers
16 bit
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
DV164005, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- PIC16F616T-ISL PDF datasheet
- PIC18F2439-ISO PDF datasheet #2
- PIC18F2439-ISO PDF datasheet #3
- PIC18F2439-ISO PDF datasheet #4
- Current page: 54 of 322
- Download datasheet (7Mb)
PIC18FXX39
FIGURE 5-2:
5.2
Several control registers are used in conjunction with
the TBLRD and TBLWT instructions. These include the:
• EECON1 register
• EECON2 register
• TABLAT register
• TBLPTR registers
5.2.1
EECON1 is the control register for memory accesses.
EECON2 is not a physical register. Reading EECON2
will read all '0's. The EECON2 register is used
exclusively in the memory write and erase sequences.
Control bit EEPGD determines if the access will be a
program or data EEPROM memory access. When
clear, any subsequent operations will operate on the
data EEPROM memory. When set, any subsequent
operations will operate on the program memory.
Control bit CFGS determines if the access will be to the
configuration registers or to program memory/data
EEPROM memory. When set, subsequent operations
will operate on configuration registers, regardless of
EEPGD (see Section 20.0, “Special Features of the
CPU”). When clear, memory selection access is
determined by EEPGD.
DS30485A-page 52
Note 1: Table Pointer actually points to one of eight holding registers, the address of which is determined by
Control Registers
TBLPTRU
EECON1 AND EECON2 REGISTERS
TBLPTRL<2:0>. The process for physically writing data to the Program Memory Array is discussed in
Section 5.5.
Table Pointer
TBLPTRH
TABLE WRITE OPERATION
(1)
TBLPTRL
Program Memory
(TBLPTR)
Preliminary
Instruction: TBLWT*
Holding Registers
Program Memory
The FREE bit, when set, will allow a program memory
erase operation. When the FREE bit is set, the erase
operation is initiated on the next WR command. When
FREE is clear, only writes are enabled.
The WREN bit, when set, will allow a write operation.
On power-up, the WREN bit is clear. The WRERR bit is
set when a write operation is interrupted by a MCLR
Reset, or a WDT Time-out Reset, during normal oper-
ation. In these situations, the user can check the
WRERR bit and rewrite the location. It is necessary to
reload the data and address registers (EEDATA and
EEADR), due to RESET values of zero.
Control bit WR initiates write operations. This bit cannot
be cleared, only set, in software. It is cleared in hard-
ware at the completion of the write operation. The
inability to clear the WR bit in software prevents the
accidental or premature termination of a write
operation.
Note:
Interrupt flag bit, EEIF in the PIR2 register,
is set when the write is complete. It must
be cleared in software.
2002 Microchip Technology Inc.
Table Latch (8-bit)
TABLAT
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