PIC16CE62X
FIGURE 5-3: BLOCK DIAGRAM OF RA3 PIN
Data
Comparator Mode = 110
Comparator Output
bus
D
Q
Q
VDD
P
WR
PortA
CK
Data Latch
D
Q
RA3 Pin
N
WR
TRISA
CK
Q
VSS
TRIS Latch
Analog
Input Mode
Schmitt Trigger
Input Buffer
RD TRISA
Q
D
EN
RD PORTA
To Comparator
Note: I/O pins have protection diodes to VDD and VSS
FIGURE 5-4: BLOCK DIAGRAM OF RA4 PIN
Data
Comparator Mode = 110
bus
D
Q
Q
Comparator Output
WR
PortA
CK
Data Latch
D
Q
RA4 Pin
N
WR
TRISA
CK
Q
VSS
TRIS Latch
Schmitt Trigger
Input Buffer
RD TRISA
Q
D
EN
RD PORTA
TMR0 Clock Input
Note: RA4 has protection diodes to VSS only
DS40182A-page 24
Preliminary
1998 Microchip Technology Inc.