PIC16F722AT-ISS Datasheet, PDF (74/286 Pages) Microchip Technology – 28-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F722A/723A
6.5 PORTE and TRISE Registers
PORTE⁽¹⁾ is an 1-bit wide, input only port. RE3 is input
only and its TRIS bit will always read as ‘1’.
Reading the PORTE register (Register 6-12) reads the
status of the pins. RE3 reads ‘0’ when MCLRE = 1.
REGISTER 6-12: PORTE: PORTE REGISTER
U-0
—
bit 7
U-0
U-0
U-0
R-x
U-0
—
—
—
RE3
—
U-0
U-0
—
—
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
bit 3
bit 2-0
Unimplemented: Read as ‘0’
RE3: PORTE I/O Pin bits⁽¹⁾
1 = Port pin is > VIH
0 = Port pin is < VIL
Unimplemented: Read as ‘0’
REGISTER 6-13: TRISE: PORTE TRI-STATE REGISTER
U-0
—
bit 7
U-0
U-0
U-0
R-1
U-0
—
—
—
TRISE3
—
U-0
U-0
—
—
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
bit 3
bit 2-0
Unimplemented: Read as ‘0’
TRISE3: RE3 Port Tri-state Control bit
This bit is always ‘1’ as RE3 is an input only
Unimplemented: Read as ‘0’
TABLE 6-5: SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
Name Bit 7 Bit 6 Bit 5 Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register on
Page
PORTE
—
—
—
—
RE3
—
—
—
74
TRISE
—
—
—
—
TRISE3⁽¹⁾
—
—
—
74
Legend: x = unknown, u = unchanged, – = unimplemented locations read as ‘0’. Shaded cells are not used by
PORTE
Note 1: This bit is always ‘1’ as RE3 is input only.
DS41417B-page 74
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