mc68hc11c0 Freescale Semiconductor, Inc, mc68hc11c0 Datasheet - Page 31

• Manufacturer Part Number: mc68hc11c0
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

DOD[6:0] — Port D Open Drain Bits [6:0]
PORTE — Port E Data
PORTF — Port F Data Register
DDDRF — Data Direction Register for Port F
Bit 7 — Not implemented
DDF[6:0] — Data Direction for Port F
FISTAT — Port F Interrupt Status
MC68HC11C0
MC68HC11C0TS/D
RESET:
RESET:
RESET:
RESET:
Alt. Pin
Alt. Pin
Func.:
Func.:
Port E has four general-purpose input pins and shares functions with the A/D converter system. When
any port E pins are being used as A/D inputs, PORTE should not be read during the sample portion of
an A/D conversion. Refer to 11 Analog-to-Digital Converter.
Port F has seven bidirectional I/O lines. Each line can be either general-purpose I/O or a maskable in-
terrupt source. When corresponding bits in FINTEN are set, port F lines become interrupt request in-
puts. Writes to PORTF drive pins only if the pins are configured for output and corresponding IRQ is
disabled. Refer to FINTEN and FISTAT registers. Refer to 6 Resets and Interrupts.
Always reads zero.
Overridden if corresponding interrupt request input is enabled.
IS7 is the interrupt status bit for IRQ in port D. FISTAT can be read any time but cannot be written. All
bits are cleared after CPU has read the register following an interrupt request.
0 = Corresponding port D output pin configured as normal CMOS driver.
1 = Corresponding port D output pin configured as open-drain output driver.
0 = Input
1 = Output
Bit 7
Bit 7
Bit 7
Bit 7
IS7
—
—
—
—
—
0
0
0
0
DDF6
IRQ7
PF6
IS6
—
—
6
0
6
0
6
0
6
0
Freescale Semiconductor, Inc.
For More Information On This Product,
DDF5
IRQ6
PF5
IS5
—
—
5
0
5
0
5
0
5
0
Go to: www.freescale.com
DDF4
IRQ5
PF4
IS4
—
—
4
0
4
0
4
0
4
0
DDF3
IRQ4
PE3
AN3
PF3
IS3
3
3
0
3
0
3
0
I
DDF2
IRQ3
AN2
PE2
PF2
IS2
2
2
0
2
0
2
0
I
DDF1
IRQ2
PE1
AN1
PF1
IS1
1
1
0
1
0
1
0
I
DDF0
$000A
IRQ1
Bit 0
Bit 0
Bit 0
Bit 0
PE0
AN0
$0002
PF0
$0003
$0004
IS0
0
0
0
I
MOTOROLA
31