PIC18F6490-E/PT Microchip Technology, PIC18F6490-E/PT Datasheet - Page 18

• Manufacturer Part Number: PIC18F6490-E/PT
• Description: IC PIC MCU FLASH 16KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6490-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, LCD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• For Use With: DM163028 - BOARD DEMO PICDEM LCD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

PIC18F8410/8490/8493 FAMILY
4.2
The verify step involves reading back the code memory
space and comparing it against the copy held in the
programmer’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.
The Table Pointer must be manually set to 200000h
(base address of the ID locations) once the code
memory has been verified. The post-increment feature
of the table read 4-bit command may not be used to
increment the Table Pointer to 200000h. After setting
the Table Pointer to 200000h, the post-increment
feature may be used to increment to 200001h,
200002h and so on.
FIGURE 4-2:
DS39624C-page 18
Verify Code Memory and ID
Locations
No
Read High Byte
Read Low Byte
Set Pointer = 0
Word = Expect
Code Memory
VERIFY CODE MEMORY AND ID LOCATIONS FLOW
Verified?
Data?
Does
Start
All
Yes
Yes
No
Failure,
Report
Error
4.3
A configuration address may be read and output on
PGD via the 4-bit command, 1001. Configuration data
is read and written in a byte-wise fashion, so it is not
necessary to merge two bytes into a word prior to a
compare.
compared to the appropriate configuration data in the
programmer’s memory for verification. Refer to
Section 4.1 “Read Code Memory, ID Locations and
Configuration Bits” for implementation details of
reading configuration data.
No
Verify Configuration Bits
Set Pointer = 200000h
Read High Byte
Read Low Byte
Word = Expect
The result may then be immediately
ID Locations
Verified?
Data?
Does
Done
All
Yes
Yes
© 2007 Microchip Technology Inc.
No
Failure,
Report
Error