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