PIC18F6621-E/PT Microchip Technology, PIC18F6621-E/PT Datasheet - Page 9
![IC PIC MCU FLASH 32KX16 64TQFP](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC18F6621-E/PT
Manufacturer Part Number
PIC18F6621-E/PT
Description
IC PIC MCU FLASH 32KX16 64TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F6525-IPT.pdf
(396 pages)
3.PIC18F6525-IPT.pdf
(8 pages)
4.PIC18F6525-IPT.pdf
(38 pages)
Specifications of PIC18F6621-E/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
53
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)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TFQFP
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
2 x 8 bit
Operating Supply Voltage
4.2 V to 5.5 V
Maximum Operating Temperature
+ 125 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
12 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F6621-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
3.1.1
When using low voltage ICSP, the part must be sup-
plied by the voltage specified in parameter #D111 if a
bulk erase is to be executed. All other bulk erase details
as described above apply.
If it is determined that a program memory erase must
be performed at a supply voltage below the bulk erase
limit, refer to the erase methodology described in
Sections 3.1.2 and 3.2.2.
If it is determined that a data EEPROM erase must be
performed at a supply voltage below the bulk erase
limit, follow the methodology described in Section 3.3
and write ‘1’s to the array.
2003 Microchip Technology Inc.
LOW VOLTAGE ICSP BULK ERASE
3.1.2
Regardless of whether high or low voltage ICSP is used,
it is possible to erase a single row (64 bytes of data) in
all panels at once. For example, in the case of a
64-Kbyte device (8 panels), 512 bytes through 64 bytes
in each panel can be erased simultaneously during each
erase sequence. In this case, the offset of the erase
within each panel is the same (see Figure 3-5). Multi-
panel single row erase is enabled by appropriately con-
figuring the Programming Control register located at
3C0006h.
The multi-panel single row erase duration is externally
timed and is controlled by PGC. After a “Start Program-
ming” command is issued (4-bit command, ‘1111’), a
NOP is issued, where the 4th PGC is held high for the
duration of the programming time, P9.
After PGC is brought low, the programming sequence
is terminated. PGC must be held low for the time spec-
ified by parameter P10 to allow high voltage discharge
of the memory array.
The code sequence to erase a PIC18F6X2X/8X2X
device is shown in Table 3-3. The flow chart shown in
Figure 3-3 depicts the logic necessary to completely
erase a PIC18F6X2X/8X2X device. The timing dia-
gram that details the “Start Programming” command,
and parameters P9 and P10 is shown in Figure 3-6.
Note:
PIC18F6X2X/8X2X
ICSP MULTI-PANEL SINGLE ROW
ERASE
The TBLPTR register must contain the
same offset value when initiating the pro-
gramming sequence as it did when the
write buffers were loaded.
DS30499B-page 9