PIC16F871 Microchip Technology Inc., PIC16F871 Datasheet - Page 43

• Manufacturer Part Number: PIC16F871
• Description: 28/40-pin, 8-bit Cmos Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

TABLE 4-9:
TABLE 4-10:
 2003 Microchip Technology Inc.
09h
89h
9Fh
Legend:
RE0/RD/AN5
RE1/WR/AN6
RE2/CS/AN7
Legend:
Note 1:
Addr
Name
PORTE
TRISE
ADCON1
Name
x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.
ST = Schmitt Trigger input, TTL = TTL input
Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port mode.
PORTE FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
ADFM
Bit 7
IBF
—
Bit#
bit0
bit1
bit2
Bit 6
OBF
—
—
Buffer Type
ST/TTL
ST/TTL
ST/TTL
IBOV
Bit 5
—
—
(1)
(1)
(1)
PSPMODE
Bit 4
—
—
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
PCFG3
Bit 3
—
—
PORTE Data Direction Bits
PCFG2
Bit 2
RE2
PCFG1
Bit 1
RE1
Function
PIC16F870/871
PCFG0
Bit 0
RE0
---- -xxx
0000 -111
--0- 0000
POR, BOR
Value on:
DS30569B-page 41
---- -uuu
0000 -111
--0- 0000
Value on
RESETS
all other