PIC18F4439-E/PT Microchip Technology, PIC18F4439-E/PT Datasheet - Page 61
![IC PIC MCU FLASH 6KX16 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18F4439-E/PT
Manufacturer Part Number
PIC18F4439-E/PT
Description
IC PIC MCU FLASH 6KX16 44TQFP
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 PIC18F4439-E/PT
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
32
Program Memory Size
12KB (6K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
640 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
32
Number Of Timers
16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 125 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
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4439-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC18F2439-ISO PDF datasheet #2
- PIC18F2439-ISO PDF datasheet #3
- PIC18F2439-ISO PDF datasheet #4
- Current page: 61 of 322
- Download datasheet (7Mb)
EXAMPLE 5-3:
5.5.2
Depending on the application, good programming
practice may dictate that the value written to the mem-
ory should be verified against the original value. This
should be used in applications where excessive writes
can stress bits near the specification limit.
5.5.3
If a write is terminated by an unplanned event, such as
loss of power or an unexpected RESET, the memory
location just programmed should be verified and repro-
grammed if needed.The WRERR bit is set when a write
operation is interrupted by a MCLR Reset, or a WDT
Time-out Reset during normal operation. In these situ-
ations, users can check the WRERR bit and rewrite the
location.
TABLE 5-2:
2002 Microchip Technology Inc.
TBLPTRU
TBPLTRH Program Memory Table Pointer High Byte (TBLPTR<15:8>)
TBLPTRL Program Memory Table Pointer High Byte (TBLPTR<7:0>)
TABLAT
INTCON
EECON2
EECON1
IPR2
PIR2
PIE2
Legend:
PROGRAM_MEMORY
Required
Sequence
Name
x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used during FLASH/EEPROM access.
Program Memory Table Latch
EEPROM Control Register2 (not a physical register)
GIE/GIEH PEIE/GIEL TMR0IE
WRITE VERIFY
UNEXPECTED TERMINATION OF
WRITE OPERATION
EEPGD
Bit 7
—
—
—
—
BSF
BCF
BSF
BCF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
DECFSZ COUNTER_HI
BRA
BCF
REGISTERS ASSOCIATED WITH PROGRAM FLASH MEMORY
WRITING TO FLASH PROGRAM MEMORY (CONTINUED)
CFGS
EECON1,EEPGD
EECON1,CFGS
EECON1,WREN
INTCON,GIE
55h
EECON2
AAh
EECON2
EECON1,WR
INTCON,GIE
PROGRAM_LOOP
EECON1,WREN
Bit 6
—
—
—
—
bit 21
Bit 5
—
—
—
—
Program Memory Table Pointer Upper Byte
(TBLPTR<20:16>)
FREE
Bit 4
INTE
EEIP
EEIF
EEIE
Preliminary
; point to FLASH program memory
; access FLASH program memory
; enable write to memory
; disable interrupts
; write 55h
; write AAh
; start program (CPU stall)
; re-enable interrupts
; loop until done
; disable write to memory
WRERR
BCLIP
BCLIF
BCLIE
RBIE
Bit 3
5.5.4
To protect against spurious writes to FLASH program
memory, the write initiate sequence must also be fol-
lowed.
(Section 20.0) for more detail.
5.6
See “Special Features of the CPU” (Section 20.0) for
details on code protection of FLASH program memory.
TMR0IF
WREN
LVDIP
LVDIF
LVDIE
Bit 2
FLASH Program Operation During
Code Protection
See
TMR3IP
TMR3IF
TMR3IE
PROTECTION AGAINST SPURIOUS
WRITES
INTF
Bit 1
WR
“Special
PIC18FXX39
RBIF
Bit 0
RD
—
—
—
Features
--00 0000 --00 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 000x 0000 000u
xx-0 x000 uu-0 u000
---1 1111 ---1 1111
---0 0000 ---0 0000
---0 0000 ---0 0000
POR, BOR
Value on:
—
DS30485A-page 59
of
the
Value on
RESETS
All Other
—
CPU”
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