Page 36 - Making PIC Microcontroller Instruments and Controllers

PERIPHERAL FEATUFES

Olher Pins
P n 1 IICLR l\,4icroprocessor feset pln pull-up Programming
Pin 11 Vdd Logic power sVDC
Pin 12 vss Logic ground
Pin 13 OSCI Oscillator
Pir 14 OSC2 Oscillator
Pin 31 Vss Logic gfound
Pin 32 Vdd Logic power, 5VDC

Re]isted in serialorder, the pins are used as followsi
Pin 1 tvtcLR Processor resel pin, pullup Proglg dev ce
Pin 2 PORTA.o 5K ohm Polenlorneter0
l
Pin 3 PORTA.I 5K ohm Polenlometer
PORTA.2 A-lo-Dconv-orsions
Pin 5 PORTA.3 5K ohm Potenliometer2 Clock chips U6
Pln 6 PORTA.4 This specllic pin has No analog lunction
needsl
specialpull-up
PORTA-5

I
Pln PORTE,O LCD wrillng conlrols
Pin 9 PORTE.l LCD wrillng conlrols
s
Pin 10 POBTE.2 LCD writlng contro Communications
P i n l l
Pit\ 12
l
Pin 3 oscl Oscillator
OSC2 Oscillaior
Pin 15 PORTC.O
Pin 16 PORTC.l Clock chips IVemory chips, servo/clock,

PORTC.2
Pln l8 PORTC.3 Clockchips M€mory chips, servo/c ock
Pln 19 PORTD,O LCD and LED bargraph
Pln 20 PORTD.l LCD and LED bargaph
P n21 POBTD,2 LCD and LED bargraph
P n 2 2 PORTD.3 LCD and LED bargraph
Pin 23 PORTC,4 Used with l,4ernory
chips