PIC16F913-ESLASHPQTP datasheet(78/330 Pages) MICROCHIP

78 / 330 page

PIC16F913/914/916/917/946

DS41250F-page 76

3.7

PORTE and TRISE Registers

PORTE is a 1-bit, 4-bit or 8-bit port with Schmitt Trigger

input buffers. RE<7:4, 2:0> are individually configured as

inputs or outputs and RE3 is only available as an input if

MCLRE is ‘0’ in Configuration Word (Register 16-1).

RE<2:0> are only available on the PIC16F914/917 and

PIC16F946. RE<7:4> are only available on the

PIC16F946.

EXAMPLE 3-5:

INITIALIZING PORTE

BANKSEL PORTE

;

CLRF

PORTE

;Init PORTE

BANKSEL TRISE

;

MOVLW

0Fh

;Set RE<3:0> as inputs

MOVWF

TRISE

;

CLRF

ANSEL

;Make RE<2:0> as I/O’s

PORTE: PORTE REGISTER

R/W-x

R-x

R/W-x

RE7(1,3)

RE6(1,3)

RE5(1,3)

RE4(1,3)

RE3

RE2(2,4)

RE1(2,4)

RE0(2,4)

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-0

RE<7:0>: PORTE I/O Pin bits

= Port pin is >VIH min.

= Port pin is <VIL max.

Note 1:

PIC16F946 only.

PIC16F914/917 and PIC16F946 only.

PIC16F91X, Read as ‘0’.

PIC16F913/916, Read as ‘0’.

TRISE: PORTE TRI-STATE REGISTER

R/W-1

R-1

R/W-1

TRISE7(1,3)

TRISE6(1,3)

TRISE5(1,3)

TRISE4(1,3)

TRISE3

TRISE2(2,4)

TRISE1(2,4)

TRISE0(2,4)

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-0

TRISE<7:0>: PORTE Tri-State Control bits

= PORTE pin configured as an input (tri-stated)

= PORTE pin configured as an output

Note 1:

PIC16F946 only.

PIC16F914/917 and PIC16F946 only.

PIC16F91X, Read as ‘0’.

PIC16F913/916, Read as ‘0’.

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