PIC18F1220-I/SS Microchip Technology, PIC18F1220-I/SS Datasheet - Page 29

• Manufacturer Part Number: PIC18F1220-I/SS
• Description: IC MCU FLASH 2KX16 A/D 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1220-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 4KB (2K x 16)
• Package / Case: 20-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: EUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 4
• 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, DM163014, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 7-ch x 10-bit
• Package: 20SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.3
To allow portability of code, a PIC18F1230/1330
programmer is required to read the Configuration Word
locations from the hex file. If Configuration Word
information is not present in the hex file, then a simple
warning message should be issued. Similarly, while
saving a hex file, all Configuration Word information
must be included. An option to not include the
Configuration Word information may be provided.
When embedding Configuration Word information in
the hex file, it should start at address 300000h.
Microchip Technology Inc. feels strongly that this
feature is important for the benefit of the end customer.
5.4
To allow portability of code, a PIC18F1230/1330
programmer is required to read the data EEPROM
information from the hex file. If data EEPROM informa-
tion is not present, a simple warning message should
be issued. Similarly, when saving a hex file, all data
EEPROM information must be included. An option to
not include the data EEPROM information may be
provided. When embedding data EEPROM information
in the hex file, it should start at address F00000h.
Microchip Technology Inc. believes that this feature is
important for the benefit of the end customer.
© 2009 Microchip Technology Inc.
Embedding Configuration Word
Information in the HEX File
Embedding Data EEPROM
Information in the HEX File
5.5
The checksum is calculated by summing the following:
• The contents of all code memory locations
• The Configuration Word, appropriately masked
• ID locations
The Least Significant 16 bits of this sum are the
checksum.
Table 5-4 (pages 30 through 31) describes how to
calculate the checksum for each device.
Note:
Checksum Computation
PIC18F1230/1330
The checksum calculation differs depend-
ing on the code-protect setting. Since the
code memory locations read out differently
depending on the code-protect setting, the
table describes how to manipulate the
actual code memory values to simulate
the values that would be read from a
protected device. When calculating a
checksum by reading a device, the entire
code memory can simply be read and
summed. The Configuration Word and ID
locations can always be read.
DS39752B-page 29