PIC16F628A-I/P Microchip Technology Inc., PIC16F628A-I/P Datasheet - Page 38

• 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 5-10:
DS40300C-page 36
WR PORTB
WR TRISB
RD TRISB
RD PORTB
RBPU
Peripheral OE
USART Slave Clock In
PORT/PERIPHERAL Select
USART TX/CK Output
Data Bus
Note
1:
2:
Port/Peripheral select signal selects between port
data and peripheral output.
Peripheral OE (output enable) is only active if
peripheral select is active.
(2)
TRIS Latch
Data Latch
D
D
CK
CK
BLOCK DIAGRAM OF
RB2/TX/CK PIN
(1)
Q
Q
Q
Schmitt
Trigger
Q
Q
EN
0
1
D
TTL
Input
Buffer
V
P
DD
Weak
Pull-up
V
V
DD
SS
TX/CK
RB2/
Preliminary
FIGURE 5-11:
RBPU
PORT/PERIPHERAL Select
USART TX/CK output
Data Bus
WR PORTB
WR TRISB
Peripheral OE
RD TRISB
RD PORTB
USART Slave Clock In
Note
1:
2:
Port/Peripheral select signal selects between port
data and peripheral output.
Peripheral OE (output enable) is only active if
peripheral select is active.
(2)
TRIS Latch
Data Latch
D
D
CK
CK
BLOCK DIAGRAM OF
RB3/CCP1 PIN
(1)
 2003 Microchip Technology Inc.
Q
Q
Schmitt
Q
Trigger
Q
Q
EN
0
1
D
TTL
Input
Buffer
V
P
DD
V
Weak
Pull-up
V
DD
SS
CCP1
RB3/