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16F628 Datasheet(PDF) 40 Page - Microchip Technology

Part # 16F628
Description  FLASH-Based 8-Bit CMOS Microcontrollers
PDF  168 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

16F628 Datasheet(HTML) 40 Page - Microchip Technology

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PIC16F627A/628A/648A
DS40044A-page 38
Preliminary
 2002 Microchip Technology Inc.
FIGURE 5-10:
BLOCK DIAGRAM OF
RB2/TX/CK PIN
FIGURE 5-11:
BLOCK DIAGRAM OF
RB3/CCP1 PIN
Data Latch
TRIS Latch
RD TRISB
Q
D
Q
CK
Q
D
Q
CK
1
0
WR PORTB
WR TRISB
Schmitt
Trigger
Peripheral OE(1)
Data Bus
SPEN
USART TX/CK Output
USART Slave Clock In
RBPU
V
DD
P
EN
QD
V
DD
V
SS
Note
1: Peripheral OE (output enable) is only active if
peripheral select is active.
RD PORTB
TTL
Input
Buffer
RB2/
TX/CK
Weak
Pull-up
Data Latch
TRIS Latch
RD TRISB
Q
D
Q
CK
Q
D
Q
CK
0
1
WR PORTB
WR TRISB
Schmitt
Trigger
Peripheral OE(2)
Data Bus
CCP1CON
CCP output
CCP In
RBPU
V
DD
P
EN
QD
V
DD
V
SS
Note
1: Peripheral OE (output enable) is only active if
peripheral select is active.
RD PORTB
TTL
Input
Buffer
RB3/
CCP1
Weak
Pull-up



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