
PIC16CE62X
DS40182C-page 24
1999 Microchip Technology Inc.
FIGURE 5-3:
BLOCK DIAGRAM OF RA3 PIN
FIGURE 5-4:
BLOCK DIAGRAM OF RA4 PIN
Data
Bus
Q
D
Q
CK
P
N
WR
PORTA
WR
TRISA
Data Latch
TRIS Latch
RD TRISA
RD PORTA
Analog
VSS
VDD
RA3 Pin
Q
D
Q
CK
D
Q
EN
To Comparator
Schmitt Trigger
Input Buffer
Input Mode
Comparator Output
Comparator Mode = 110
VDD
Data
Bus
Q
D
Q
CK
N
WR
PORTA
WR
TRISA
Data Latch
TRIS Latch
RD TRISA
RD PORTA
VSS
RA4 Pin
Q
D
Q
CK
D
Q
EN
TMR0 Clock Input
Schmitt Trigger
Input Buffer
Comparator Output
Comparator Mode = 110