PIC16F87X
TABLE 3-9:
Name
RE0/RD/AN5
PORTE FUNCTIONS
Bit#
bit0
Buffer Type
ST/TTL
(1)
Function
Input/output port pin or read control input in parallel slave port mode or
analog input:
RD
1
= Not a read operation
0
= Read operation. Reads PORTD register (if chip selected)
Input/output port pin or write control input in parallel slave port mode or
analog input:
WR
1
= Not a write operation
0
= Write operation. Writes PORTD register (if chip selected)
Input/output port pin or chip select control input in parallel slave port
mode or analog input:
CS
1
= Device is not selected
0
= Device is selected
RE1/WR/AN6
bit1
ST/TTL
(1)
RE2/CS/AN7
bit2
ST/TTL
(1)
Legend: ST = Schmitt Trigger input TTL = TTL input
Note 1:
Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port Mode.
TABLE 3-10:
Addr
09h
89h
9Fh
Name
PORTE
TRISE
ADCON1
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
Bit 7
鈥?/div>
IBF
ADFM
Bit 6
鈥?/div>
OBF
鈥?/div>
Bit 5
鈥?/div>
IBOV
鈥?/div>
Bit 4
鈥?/div>
PSPMODE
鈥?/div>
Bit 3
鈥?/div>
鈥?/div>
PCFG3
Bit 2
RE2
PCFG2
Bit 1
RE1
PCFG1
Bit 0
RE0
PCFG0
Value on:
POR,
BOR
---- -xxx
0000 -111
--0- 0000
Value on all
other resets
---- -uuu
0000 -111
--0- 0000
PORTE Data Direction Bits
Legend:
x
= unknown,
u
= unchanged,
-
= unimplemented read as '0'. Shaded cells are not used by PORTE.
漏
1999 Microchip Technology Inc.
DS30292B-page 37
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