MC68HCP11 Datasheet, PDF (20/45 Pages) Motorola, Inc – 8-Bit Microcontroller

PORTA — Port A Data
$1000
Bit 7
6
5
4
3
2
1
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
RESET: HiZ
0
0
0
0
HiZ
HiZ
HiZ
Alt. Pin
Func.: PAI
OC2
OC3
OC4
OC5
IC1
IC2
IC3
And/or: OC1
OC1
OC1
OC1
OC1
—
—
—
PIOC — Parallel I/O Control
$1002
Bit 7
6
5
4
3
2
1
Bit 0
STAF STAI CWOM HNDS OIN
RESET:
0
0
0
0
0
PLS
EGA INVB
U
1
1
STAF — Strobe A Interrupt Status Flag
Set when selected edge occurs on Strobe A. Cleared by PIOC read with STAF set followed by PORTCL
read (simple strobed or full input handshake mode) or PORTCL write (output handshake mode).
STAI — Strobe A Interrupt Enable Mask
0 = STAF interrupts disabled
1 = STAF interrupts enabled
CWOM — Port C Wire-OR Mode (affects all eight port C pins)
0 = Port C outputs are normal CMOS outputs
1 = Port C outputs are open-drain outputs
HNDS — Handshake Mode
0 = Simple strobe mode
1 = Full input or output handshake mode
OIN — Output or Input Handshake Select
HNDS must be set to one for this bit to have meaning.
0 = Input handshake
1 = Output handshake
PLS — Pulse/Interlocked Handshake Operation
HNDS must be set to one for this bit to have meaning.
0 = Interlocked handshake
1 = Pulsed handshake (strobe B pulses high for two E-clock cycles)
EGA — Active Edge for Strobe A
0 = STRA falling edge selected
1 = STRA rising edge selected
INVB — Invert Strobe B
0 = Active level is logic zero
1 = Active level is logic one
MOTOROLA
20
MC68HC11A8
MC68HC11A8TS/D