MC68HC11P2 Datasheet, PDF (79/268 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Parallel Input/Output
Port E
4.6.2 DDRD — Data direction register for port D
Data direction D (DDRD)
Address bit 7
$0009 0
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
0 DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 0000 0000
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.
Pin
Alternate
function
PE0
AD0
PE1
AD1
PE2
AD2
PE3
AD3
PE4
AD4
PE5
AD5
PE6
AD6
PE7
AD7
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See Analog-to-Digital
Converter for more
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information.
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On reset the pins are configured as general purpose high-impedance
inputs.
MC68HC11P2 — Rev 1.0
Parallel Input/Output
For More Information On This Product,
Go to: www.freescale.com
Technical Data