PIC18F6680-I/PT Microchip Technology, PIC18F6680-I/PT Datasheet - Page 23

• 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

4.2
The verify step involves reading back the code memory
space and comparing against the copy held in the pro-
grammer’s buffer. Memory reads occur a single byte at
a time, so two bytes must be read to compare against
the word in the programmer’s buffer. Refer to
Section 4.1 “Read Code Memory, ID Locations and
Configuration Bits” for implementation details of
reading code memory.
FIGURE 4-2:
 2010 Microchip Technology Inc.
Verify Code Memory and ID
Locations
No
Read High Byte
Read Low Byte
Set Pointer = 0
Word = Expect
Code Memory
VERIFY CODE MEMORY FLOW
Verified?
Data?
Does
Start
All
Yes
Yes
No
Failure,
Report
Error
The Table Pointer must be manually set to 200000h
(base address of the ID locations) once the code mem-
ory has been verified. The post-increment feature of
the table read 4-bit command may not be used to
increment the Table Pointer beyond the code memory
space. In a 48-Kbyte device, for example, a post-
increment read of address 0BFFFh will wrap the Table
Pointer back to 0000h, rather than point to
unimplemented address, 0C000h.
No
PIC18FXX80/XX85
Set Pointer = 200000h
Read High Byte
Read Low Byte
Word = Expect
ID Locations
Verified?
Data?
Done
Does
All
Yes
Yes
No
DS39606E-page 23
Failure,
Report
Error