MC68HC11P2BCFN4 datasheet(79/268 Pages) FREESCALE

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Parallel Input/Output

Port E

MC68HC11P2 — Rev 1.0

Technical Data

Parallel Input/Output

4.6.2 DDRD — Data direction register for port D

Bits [7:6] — Reserved; always read zero

DDD[5:0] — Data direction for port D

1 = The corresponding pin is configured as an output.

0 = The corresponding pin is configured as an input.

4.7 Port E

Port E is an 8-bit input-only port. In addition to their input capability, port

E pins are shared with A/D functions, as shown in the following table.

On reset the pins are configured as general purpose high-impedance

inputs.

Address bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

State

on reset

Data direction D (DDRD)

$0009

DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 0000 0000

Alternate

function

PE0

AD0

PE1

AD1

PE2

AD2

PE3

AD3

PE4

AD4

PE5

AD5

PE6

AD6

PE7

AD7







See Analog-to-Digital

Converter for more

information.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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