PIC18F6680-I/PT Microchip Technology, PIC18F6680-I/PT Datasheet - Page 9

• Manufacturer Part Number: PIC18F6680-I/PT
• Description: IC PIC MCU FLASH 32KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6680-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 64KB (32K x 16)
• Package / Case: 64-TFQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Eeprom Size: 1K x 8
• Ram Size: 3.25K 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: 3.25 KB
• Interface Type: I2C/SPI/AUSART/CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 53
• 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, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT64PT5 - SOCKET TRAN ICE 64MQFP/TQFPAC164319 - MODULE SKT MPLAB PM3 64TQFPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.0
3.1
Erasing code or data EEPROM is accomplished by
writing an “Erase Option” to address 3C0004h. Code
memory may be erased portions at a time, or the user
may erase the entire device in one action. “Bulk Erase”
operations will also clear any code-protect settings
associated with the memory block erased. Erase
options are detailed in Table 3-1.
TABLE 3-1:
The actual Bulk Erase function is a self-timed opera-
tion. Once the erase has started (falling edge of the 4th
PGC after the “Write” command), serial execution will
cease until the erase completes (parameter P11).
During this time, PGC may continue to toggle but PGD
must be held low.
The code sequence to erase the entire device is shown
in Table 3-2 and the flowchart is shown in Figure 3-1.
FIGURE 3-2:
 2010 Microchip Technology Inc.
Chip Erase
Erase Data EEPROM
Erase Boot Block
Erase Block 1
Erase Block 2
Erase Block 3
Erase Block 4
Note:
PGC
PGD
4-Bit Command
DEVICE PROGRAMMING
High-Voltage ICSP Bulk Erase
1
0
A Bulk Erase is the only way to reprogram
code-protect bits from an ON state to an
OFF state.
Non code-protect bits are not returned to
default settings by a Bulk Erase. These
bits should be programmed to ‘1’s, as out-
lined in Section 3.6 “Configuration Bits
Programming”.
2
0
Description
3
1
BULK ERASE OPTIONS
4
1
P5
BULK ERASE TIMING
1
Data Payload
0
2
0
16-Bit
15 16
0
0
P5A
4-Bit Command
1
0
Data
2
0
8Ah
8Bh
80h
81h
83h
88h
89h
3
0
4
0
P5
PGD = Input
1
0
Data Payload
2
0
16-Bit
TABLE 3-2:
FIGURE 3-1:
Command
15 16
0
0000
0000
0000
0000
0000
0000
0000
0000
1100
0000
0000
4-Bit
0
P5A
PIC18FXX80/XX85
4-Bit Command
1
0
Payload
2
8E A6
8C A6
0E 3C
6E F8
0E 00
6E F7
0E 04
6E F6
00 80
00 00
00 00
0
Data
3
Delay P11+P10
0
BULK ERASE COMMAND
SEQUENCE
Load Address
Entire Device
Pointer to
Write 80h
4
3C0004h
to Erase
0
BULK ERASE FLOW
Done
Time
Start
BSF
BSF
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
MOVWF
Write 80h TO 3C0004h to
erase entire device.
NOP
Hold PGD low until
erase completes.
Erase Time
P11
Core Instruction
EECON1, EEPGD
EECON1, CFGS
3Ch
TBLPTRU
00h
TBLPTRH
04h
TBLPTRL
DS39606E-page 9
P10
Data Payload
16-Bit
1
n
2
n