MC68HC11A1 MOTOROLA [Motorola, Inc], MC68HC11A1 Datasheet - Page 20

• Manufacturer Part Number: MC68HC11A1
• Description: 8-Bit Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

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