PIC16F628A-I/P Microchip Technology Inc., PIC16F628A-I/P Datasheet - Page 32

• Manufacturer Part Number: PIC16F628A-I/P
• Description: 18 PIN, 3.5 KB FLASH, 224 RAM, 16 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F628A-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 16
• Interface: USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 224 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F62X
FIGURE 5-1:
FIGURE 5-3:
DS40300C-page 30
Data
Bus
WR
PORTA
WR
TRISA
RD
TRISA
RD PORTA
To Comparator
Data
Bus
WR
PORTA
WR
TRISA
RD
TRISA
RD PORTA
To Comparator
TRIS Latch
D
Data Latch
D
CK
CK
TRIS Latch
D
Data Latch
D
CK
CK
Q
Q
Q
Q
Q
Q
Q
Q
BLOCK DIAGRAM OF
RA0/AN0:RA1/AN1 PINS
BLOCK DIAGRAM OF THE RA3/AN3 PIN
Input Mode
Schmitt Trigger
Q
Analog
Input Buffer
Comparator Output
EN
D
Comparator Mode = 110
V
V
DD
SS
I/O Pin
Preliminary
FIGURE 5-2:
Data
Bus
WR
PORTA
WR
TRISA
RD
TRISA
RD PORTA
To Comparator
1
0
Q
TRIS Latch
D
Data Latch
D
CK
CK
EN
V
Input Mode
D
V
ROE
REF
Schmitt Trigger
Q
Q
Q
Q
Analog
Input Buffer
BLOCK DIAGRAM OF
RA2/VREF PIN
 2003 Microchip Technology Inc.
Schmitt Trigger
Input Mode
Analog
Q
Input Buffer
EN
V
D
V
DD
SS
RA3 Pin
V
V
DD
SS
RA2 Pin