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PIC16F913 Datasheet(PDF) 42 Page - Microchip Technology

Part # PIC16F913
Description  28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology
PDF  272 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F913 Datasheet(HTML) 42 Page - Microchip Technology

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PIC16F917/916/914/913
DS41250E-page 40
Preliminary
© 2005 Microchip Technology Inc.
3.1.1.8
RA7/OSC1/CLKI/T1OSI
Figure 3-8 shows the diagram for this pin. The
RA7/OSC1/CLKI/T1OSI pin is configurable to function
as one of the following:
• a general purpose I/O
• a crystal/resonator connection
• a clock input
• a TMR1 oscillator connection
FIGURE 3-8:
BLOCK DIAGRAM OF RA7/OSC1/CLKI/T1OSI
TABLE 3-1:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
Value on all
other
Resets
05h
PORTA
RA7
RA6
RA5
RA4
RA3
RA2
RA1
RA0
xxxx xxxx
uuuu uuuu
10h
T1CON
T1GINV
T1GE
T1CKPS1 T1CKPS0 T1OSCEN
T1SYNC
TMR1CS
TMR1ON 0000 0000
uuuu uuuu
14h
SSPCON
WCOL
SSPOV
SSPEN
CKP
SSPM3
SSPM2
SSPM1
SSPM0
0000 0000
0000 0000
1Fh
ADCON0
ADFM
VCFG1
VCFG0
CHS2
CHS1
CHS0
GO/DONE
ADON
0000 0000
0000 0000
81h/181h OPTION_REG
RBPU
INTEDG
T0CS
T0SE
PSA
PS2
PS1
PS0
1111 1111
1111 1111
85h
TRISA
TRISA7
TRISA6
TRISA5
TRISA4
TRISA3
TRISA2
TRISA1
TRISA0
1111 1111
1111 1111
91h
ANSEL
ANS7
ANS6
ANS5
ANS4
ANS3
ANS2
ANS1
ANS0
1111 1111
1111 1111
9Ch
CMCON0
C2OUT
C1OUT
C2INV
C1INV
CIS
CM2
CM1
CM0
0000 0000
0000 0000
107h
LCDCON
LCDEN
SLPEN
WERR
VLCDEN
CS1
CS0
LMUX1
LMUX0
0001 0011
0001 0011
11Ch
LCDSE0(1)
SE7
SE6
SE5
SE4
SE3
SE2
SE1
SE0
0000 0000
uuuu uuuu
11Dh
LCDSE1(1)
SE15
SE14
SE13
SE12
SE11
SE10
SE9
SE8
0000 0000
uuuu uuuu
Legend:
x
= unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by PORTA.
Note
1:
This register is only initialized by a POR or BOR reset and is unchanged by other Resets.
Q
D
Q
CK
Data Latch
TRIS Latch
RD TRISA
RD PORTA
Q
D
Q
CK
TTL
Input Buffer
Data Bus
WR PORTA
WR TRISA
FOSC = 10x
FOSC = 10x
RA7/OSC1/
VDD
CLKI/T1OSI
Pin
Oscillator
Circuit
From OSC1
FOSC = 011



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