PIC18LF6620T-I/PT Microchip Technology, PIC18LF6620T-I/PT Datasheet - Page 7

• Manufacturer Part Number: PIC18LF6620T-I/PT
• Description: IC MCU FLASH 32KX16 LV 64-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF6620T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 3.75K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3840 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 52
• Number Of Timers: 2 x 8 bit
• Operating Supply Voltage: 2 V to 5.5 V
• 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, DM183022, DM183032
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit
• 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
operation. Once the erase has started (falling edge of
the 4th SCLK after the NOP command), serial execution
will cease until the erase completes (parameter P11).
During this time, SCLK may continue to toggle, but
SDATA must be held low.
The code sequence to erase the entire device is shown
in Figure 3-1 and the flowchart is shown in Figure 3-2.
FIGURE 3-3:
 2010 Microchip Technology Inc.
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
SCLK
SDATA
DEVICE PROGRAMMING
High Voltage ICSP Bulk Erase
4-bit Command
1
0
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
SDATA = Input
4
0
P5
1
0
Data Payload
2
0
16-bit
FIGURE 3-1:
FIGURE 3-2:
Command
Note:
0000
0000
0000
0000
0000
0000
1100
0000
0000
4-Bit
15 16
0
0
P5A
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 ones, as out-
lined in Section 3.6, "Configuration Bits
Programming".
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
Load Address
Entire Device
3
0
Pointer to
Write 80h
To Erase
3C0004h
PIC18FXX20
4
BULK ERASE COMMAND
SEQUENCE
BULK ERASE FLOW
Done
Time
0
Start
MOVLW 3Ch
MOVWF TBLPTRU
MOVLW 00h
MOVWF TBLPTRH
MOVLW 04h
MOVWF TBLPTRL
Write 80h TO 3C0004h to
erase entire device.
NOP
Hold SDATA low until
erase completes.
Erase Time
Core Instruction
P11
DS39583C-page 7
Data Payload
P10
16-bit
1
n
2
n