MC68HC912BD32 Datasheet, PDF (67/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
Bus Control and Input/Output
Registers
RDRIV — Reduced Drive of I/O Lines
Bit 7
6
5
0
0
0
RESET:
0
0
0
$000D
4
3
2
1
Bit 0
0
RDPE
0
RDPB
RDPA
0
0
0
0
0
These bits select reduced drive for the associated port pins. This
gives reduced power consumption and reduced RFI with a slight
increase in transition time (depending on loading). The reduced drive
function is independent of which function is being used on a particular
port. This register is not in the map in peripheral mode.
Normal: write once; Special: write anytime except the first time. Read
anytime.
RDPE — Reduced Drive of Port E
0 = All port E output pins have full drive enabled.
1 = All port E output pins have reduced drive capability.
RDPB — Reduced Drive of Port B
0 = All port B output pins have full drive enabled.
1 = All port B output pins have reduced drive capability.
RDPA — Reduced Drive of Port A
0 = All port A output pins have full drive enabled.
1 = All port A output pins have reduced drive capability.
9-bus
Bus Control and Input/Output
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MC68HC912BD32 Rev 1.0