PIC16F627-04 Microchip Technology, PIC16F627-04 Datasheet - Page 29

• Manufacturer Part Number: PIC16F627-04
• Description: FLASH-Based 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

FIGURE 5-3:
FIGURE 5-4:
1999 Microchip Technology Inc.
WR
PORTA
WR
TRISA
WR
PORTA
Data
Bus
WR
TRISA
Data
Bus
RD PORTA
RD PORTA
To Comparator
TRIS Latch
D
D
Data Latch
TMR0 Clock Input
TRIS Latch
D
Data Latch
D
CK
CK
CK
CK
BLOCK DIAGRAM OF THE RA3/AN3 PIN
BLOCK DIAGRAM OF RA4/T0CKI PIN
RD TRISA
RD TRISA
Q
Q
Q
Q
Q
Q
Q
Q
Comparator Output
Comparator Output
Comparator Mode = 110
Comparator Mode = 110
Preliminary
1
0
1
0
Q
Q
EN
EN
Input Mode
D
D
Schmitt Trigger
Analog
Schmitt Trigger
Input Buffer
Input Buffer
PIC16F62X
V
P
V
N
DD
SS
V
N
SS
V
V
DD
SS
DS40300B-page 29
V
SS
RA3 Pin
RA4 Pin