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