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PIC16LC554 数据表(PDF) 24 Page - Microchip Technology

部件名 PIC16LC554
功能描述  EPROM-Based 8-Bit CMOS Microcontroller
PDF  96 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16LC554 数据表(HTML) 24 Page - Microchip Technology

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PIC16C55X(A)
DS40143B-page 24
Preliminary
© 1997 Microchip Technology Inc.
TABLE 5-1:
PORTA FUNCTIONS
TABLE 5-2:
SUMMARY OF REGISTERS ASSOCIATED WITH PORTA
Name
Bit #
Buffer
Type
Function
RA0
bit0
ST
Input/output
RA1
bit1
ST
Input/output
RA2
bit2
ST
Input/output
RA3
bit3
ST
Input/output
RA4/T0CKI
bit4
ST
Input/output or external clock input for TMR0. Output is open drain type.
Legend: ST = Schmitt Trigger input
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
Value on
All Other Resets
05h
PORTA
—
—
—
RA4
RA3
RA2
RA1
RA0
---x xxxx
---u uuuu
85h
TRISA
—
—
—
TRISA4 TRISA3 TRISA2 TRISA1 TRISA0
---1 1111
---1 1111
Legend: — = Unimplemented locations, read as ‘0’
Note:
Note: Shaded bits are not used by PORTA.



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