PIC18F6621-I/PT Microchip Technology, PIC18F6621-I/PT Datasheet - Page 8

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: IC PIC MCU FLASH 32KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F6621-I/PT

• Core Size: 8-Bit
• Program Memory Size: 64KB (32K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Type: FLASH
• 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 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Controller Family/series: PIC18
• No. Of I/o's: 53
• Eeprom Memory Size: 1024Byte
• Ram Memory Size: 3.75KB
• Cpu Speed: 40MHz
• No. Of Timers: 5
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3840 B
• Interface Type: MSSP, SPI, I2C, EUSART
• 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, DM183032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• 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: Details

PIC18F6X2X/8X2X
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 NOP command), serial execution will
cease until the erase completes (parameter P11). Dur-
ing this time, PGC may continue to toggle but PGD
must be held low.
The code sequence to erase the entire device is shown
in Figure 3-2 and the flow chart is shown in Figure 3-1.
FIGURE 3-2:
DS30499B-page 8
Chip Erase
Erase Data EEPROM
Erase Boot Block
Erase Block 1
Erase Block 2
Erase Block 3
Erase Block 4
Erase Block 5
Erase Block 6
Erase Block 7
Erase Block 8
Note:
PGC
PGD
DEVICE PROGRAMMING
High Voltage ICSP Bulk Erase
4-bit Command
1
0
A bulk erase is the only way to reprogram
code protect bits from an on-state to an
off-state.
2
Description
0
3
1
BULK ERASE OPTIONS
4
1
BULK ERASE TIMING
P5
1
0
Data Payload
2
0
16-bit
15 16
0
0
P5A
4-bit Command
1
0
Data
80h
81h
83h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
8Fh
2
0
3
0
PGD = Input
4
0
P5
1
0
Data Payload
2
0
16-bit
TABLE 3-2:
FIGURE 3-1:
Command
0000
0000
0000
0000
0000
0000
1100
0000
0000
4-bit
15 16
0
0
P5A
4-bit Command
1
Payload
0
0E 3C
6E F8
0E 00
6E F7
0E 04
6E F6
00 80
00 00
00 00
Data
2
0
Delay P11+P10
BULK ERASE COMMAND
SEQUENCE
Load Address
Entire Device
3
0
Pointer to
Write 80h
To Erase
3C0004h
4
BULK ERASE FLOW
Done
Time
Start
0
 2003 Microchip Technology Inc.
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 80h TO 3C0004h to
erase entire device.
NOP
Hold PGD low until
erase completes.
Erase Time
Core Instruction
P11
Data Payload
P10
16-bit
1
n
2
n