PIC18F8720-I/PT Microchip Technology, PIC18F8720-I/PT Datasheet - Page 83

no-image

PIC18F8720-I/PT

Manufacturer Part Number
PIC18F8720-I/PT
Description
IC MCU FLASH 64KX16 EE 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr

Specifications of PIC18F8720-I/PT

Program Memory Type
FLASH
Program Memory Size
128KB (64K x 16)
Package / Case
80-TFQFP
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
68
Eeprom Size
1K x 8
Ram Size
3.75K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3.75 KB
Interface Type
I2C/SPI/USART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
68
Number Of Timers
5
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, DM183032, DM183022, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
16-ch x 10-bit
Package
80TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
25 MHz
Operating Supply Voltage
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT80PT3 - SOCKET TRAN ICE 80MQFP/TQFPAC164320 - MODULE SKT MPLAB PM3 80TQFPAC174011 - MODULE SKT PROMATEII 80TQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F8720-I/PT
Manufacturer:
HONGFA
Quantity:
12 000
Part Number:
PIC18F8720-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F8720-I/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
PIC18F8720-I/PTC01
Manufacturer:
Microchip Technology
Quantity:
10 000
7.3
To read a data memory location, the user must write the
address to the EEADRH:EEADR register pair, clear the
EEPGD control bit (EECON1<7>), clear the CFGS
EXAMPLE 7-1:
7.4
To write an EEPROM data location, the address must
first be written to the EEADRH:EEADR register pair
and the data written to the EEDATA register. Then the
sequence in Example 7-2 must be followed to initiate
the write cycle.
The write will not initiate if the above sequence is not
exactly followed (write 55h to EECON2, write AAh to
EECON2, then set WR bit) for each byte. It is strongly
recommended that interrupts be disabled during this
code segment.
Additionally, the WREN bit in EECON1 must be set to
enable writes. This mechanism prevents accidental
writes to data EEPROM due to unexpected code
execution (i.e., runaway programs). The WREN bit
EXAMPLE 7-2:
 2004 Microchip Technology Inc.
MOVLW
MOVWF
MOVLW
MOVWF
BCF
BCF
BSF
MOVF
Required
Sequence
Reading the Data EEPROM
Memory
Writing to the Data EEPROM
Memory
DATA_EE_ADDRH
EEADRH
DATA_EE_ADDR
EEADR
EECON1, EEPGD
EECON1, CFGS
EECON1, RD
EEDATA, W
PIC18F6520/8520/6620/8620/6720/8720
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
BCF
BCF
BSF
BCF
MOVLW
MOVWF
MOVLW
MOVWF
BSF
BSF
BCF
DATA EEPROM READ
DATA EEPROM WRITE
DATA_EE_ADDRH
EEADRH
DATA_EE_ADDR
EEADR
DATA_EE_DATA
EEDATA
EECON1, EEPGD
EECON1, CFGS
EECON1, WREN
INTCON, GIE
55h
EECON2
AAh
EECON2
EECON1, WR
INTCON, GIE
EECON1, WREN
;
; Upper bits of Data Memory Address to read
;
; Lower bits of Data Memory Address to read
; Point to DATA memory
; Access EEPROM
; EEPROM Read
; W = EEDATA
;
; Upper bits of Data Memory Address to write
;
; Lower bits of Data Memory Address to write
;
; Data Memory Value to write
; Point to DATA memory
; Access EEPROM
; Enable writes
; Disable Interrupts
;
; Write 55h
;
; Write AAh
; Set WR bit to begin write
; Enable Interrupts
; User code execution
; Disable writes on write complete (EEIF set)
control bit (EECON1<6>) and then set the RD control
bit (EECON1<0>). The data is available for the very
next instruction cycle; therefore, the EEDATA register
can be read by the next instruction. EEDATA will hold
this value until another read operation, or until it is
written to by the user (during a write operation).
should be kept clear at all times, except when updating
the EEPROM. The WREN bit is not cleared
by hardware
After a write sequence has been initiated, EECON1,
EEADRH, EEADR and EEDATA cannot be modified.
The WR bit will be inhibited from being set unless the
WREN bit is set. Both WR and WREN cannot be set
with the same instruction.
At the completion of the write cycle, the WR bit is
cleared in hardware and the EEPROM Write Complete
Interrupt Flag bit (EEIF) is set. The user may either
enable this interrupt, or poll this bit. EEIF must be
cleared by software.
DS39609B-page 81

Related parts for PIC18F8720-I/PT