PIC16F84A-10B/SS View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16F84A-10B/SS Datasheet PDF : 124 Pages
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PIC16F8X
TABLE 5-1 PORTA FUNCTIONS
Name
Bit0
Buffer Type
Function
RA0
bit0
TTL
Input/output
RA1
bit1
TTL
Input/output
RA2
bit2
TTL
Input/output
RA3
bit3
RA4/T0CKI
bit4
TTL
Input/output
ST
Input/output or external clock input for TMR0.
Output is open drain type.
Legend: TTL = TTL input, ST = Schmitt Trigger input
TABLE 5-2 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
Power-on
Reset
Value on all
other resets
05h
PORTA
85h
TRISA
—
—
—
—
—
RA4/T0CKI
RA3
RA2
RA1
RA0 ---x xxxx ---u uuuu
—
TRISA4
TRISA3 TRISA2 TRISA1 TRISA0 ---1 1111 ---1 1111
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are unimplemented, read as '0'
DS30430C-page 22
© 1998 Microchip Technology Inc.
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