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PIC16F628-20/SS 数据表(PDF) 39 Page - Microchip Technology

部件名 PIC16F628-20/SS
功能描述  FLASH-Based 8-Bit CMOS Microcontrollers
PDF  160 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16F628-20/SS 数据表(HTML) 39 Page - Microchip Technology

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© 1999 Microchip Technology Inc.
Preliminary
DS40300B-page 39
PIC16F62X
FIGURE 5-12: BLOCK DIAGRAM OF RB4/PGM PIN
Data Latch
TRIS Latch
RD TRISB
P
VSS
Q
D
Q
CK
Q
D
Q
CK
N
VDD
RD PORTB
WR PORTB
WR TRISB
Schmitt
Trigger
PGM input
LVP
Data Bus
RB4/PGM
RBPU
VDD
weak pull-up
P
From other
QD
EN
QD
EN
Set RBIF
RB<7:4> pins
RD Port
Q3
Q1
TTL
input
buffer
VDD
VSS
Note:
The low voltage programming disables the interrupt on change and the weak pullups on RB4.



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