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PIC16F877 bảng dữ liệu(PDF) 1 Page - Microchip Technology

tên linh kiện PIC16F877
Giải thích chi tiết về linh kiện  EEPROM Memory Programming Specification
PDF  22 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
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PIC16F877 bảng dữ liệu(HTML) 1 Page - Microchip Technology

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 2002 Microchip Technology Inc.
DS39025F-page 1
M
PIC16F87X
This document includes the programming
specifications for the following devices:
1.0
PROGRAMMING THE
PIC16F87X
The PIC16F87X is programmed using a serial method.
The Serial mode will allow the PIC16F87X to be pro-
grammed while in the user’s system. This allows for
increased design flexibility. This programming specifi-
cation applies to PIC16F87X devices in all packages.
1.1
Programming Algorithm
Requirements
The programming algorithm used depends on the
operating voltage (VDD) of the PIC16F87X device.
Algorithm
1
is
designed
for
a
VDD
range
of
2.2V
≤ VDD < 5.5V. Algorithm 2 is for a range of
4.5V
≤ VDD ≤ 5.5V. Either algorithm can be used with
the two available programming entry methods. The first
method follows the normal Microchip Programming
mode entry of applying a VPP voltage of 13V ± .5V. The
second method, called Low Voltage ICSPTM or LVP for
short, applies VDD to MCLR and uses the I/O pin RB3
to enter Programming mode. When RB3 is driven to
VDD from ground, the PIC16F87X device enters
Programming mode.
1.2
Programming Mode
The Programming mode for the PIC16F87X allows pro-
gramming of user program memory, data memory, spe-
cial locations used for ID, and the configuration word.
Pin Diagram
•PIC16F870
•PIC16F874
•PIC16F871
•PIC16F876
•PIC16F872
•PIC16F877
•PIC16F873
PDIP, SOIC
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0/INT
VDD
VSS
RD7/PSP7
RD6/PSP6
RD5/PSP5
RD4/PSP4
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
RD3/PSP3
RD2/PSP2
MCLR/VPP
RA0/AN0
RA1/AN1
RA2/AN2
/VREF
RA3/AN3/VREF
RA4/T0CKI
RA5/AN4/SS
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
VDD
VSS
OSC1/CLKIN
OSC2/CLKOUT
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RD0/PSP0
RD1/PSP1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
10
11
2
3
4
5
6
1
8
7
9
12
13
14
15
16
17
18
19
20
23
24
25
26
27
28
22
21
MCLR/VPP
RA0/AN0
RA1/AN1
RA2/AN2/VREF
RA3/AN3/VREF
RA4/T0CKI
RA5/AN4/SS
VSS
OSC1/CLKIN
OSC2/CLKOUT
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0/INT
VDD
VSS
RC7/RX/DT
RC6/TX/CK
RC5/SDO
RC4/SDI/SDA
EEPROM Memory Programming Specification


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