I have used the PIC18F452 microcontroller for both the main micro and the interface chip device because of it enhanced features that can be used to meet the specification required from the project designed such as large Memory, I2C bus, sufficient Input and Output pins for interface devices, In-Circuit Debug (ICD) via two pins and others explained in the table below.

The device PIC18F452 family incorporates a range of features that can significantly reduce power consumption during operation.

Table: Features description of microcontrollers

PIC microcontroller Feature	PIC  microcontroller feature description
Flash memory	Re-programmable program storage.
RAM	Memory storage for variables.
EEPROM	Long term stable memory: Electrically Erasable Programmable Read Only Memory.
I/O ports	High current Input/output ports (with pin direction change).
Timers/Counters	Typically 3.
USART	Built in RS232 protocol (only needs level translator chip).
CCP	Capture/Compare/PWM module.
SSP	I2C and SPI Interfaces.
Comparator	An analogue comparator and internal voltage reference.
ADC	Analogue to digital converter.
LCD	LCD interface.
ICSP	Simple programming using In Circuit Serial Programming.

Posted Date: 2/23/2013 12:07:59 AM | Location : United States

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