Rainbow Electronics MAXQ2010 - Manual (Page 19)

MAXQ2010
16-Bit Mixed-Signal Microcontroller with LCD
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Pin Description (continued)
PIN NAME FUNCTION
LCD Segment-Driver Output; LCD Common Drive Output. These pins function as LCD
segment or common drive outputs. Configuring a pin as a common drive output disables the
segment function for that pin.
PIN SPECIAL/ALTERNATE FUNCTION
10 COM3 SEG40
9 COM2 SEG41
10, 9, 8
COM3, COM2,
COM1; SEG40,
SEG41, SEG41
8 COM1 SEG42
7 COM0 LCD Common Drive 0, Output. This pin functions as a LCD common-drive output.
68
P5.0/INT8/
TB0B/RX0
Digital I/O, Type D Port 5.0; Timer B0 Pin B; Serial Port 0 Receive; External Edge-Selectable
Interrupt 8. This pin defaults to an input with a weak pullup after reset and functions as
general-purpose I/O. The port pad contains a Schmitt voltage input and can be configured as
an external interrupt. Enabling a special function disables the pin as digital I/O.
67
P5.1/INT9/
TB0A/TX0
Digital I/O, Type D Port 5.1; Timer B0 Pin A; Serial Port 0 Transmit; External Edge-
Selectable Interrupt 9. This pin defaults to an input with a weak pullup after reset and
functions as general-purpose I/O. The port pad contains a Schmitt voltage input and can be
configured as an external interrupt. Enabling a special function disables the pin as general-
purpose I/O.
61
P5.2/INT10/
SQW
Digital I/O, Type-D Port 5.2; External Edge-Selectable Interrupt 10; RTC Square-Wave Output.
This pin defaults to an input with a weak pullup after reset and functions as general-purpose
I/O. The port pad contains a Schmitt voltage input and can be configured as an external
interrupt. Enabling a special function disables the pin as general-purpose I/O.
60
P5.3/INT11/
SSEL
Digital I/O, Type D Port 5.3; External Edge-Selectable Interrupt 11; Active-Low SPI Slave-
Select Input. This pin defaults to an input with a weak pullup after reset and functions as
general-purpose I/O. The port pad contains a Schmitt voltage input and can be configured as
an external interrupt. Enabling a special function disables the pin as general-purpose I/O.
59
P5.4/INT12/
MOSI
Digital I/O, Type D Port 5.4; External Edge-Selectable Interrupt 12; SPI Master Out-Slave In
Output. This pin defaults to an input with a weak pullup after reset and functions as general-
purpose I/O. The port pad contains a Schmitt voltage input and can be configured as an
external interrupt. Enabling a special function disables the pin as general-purpose I/O.
58
P5.5/INT13/
SCLK
Digital I/O, Type D Port 5.5; External Edge-Selectable Interrupt 13; SPI Clock Output. This pin
defaults as an input with a weak pullup after a reset and functions as general-purpose I/O. The
port pad contains a Schmitt input circuitry and can be configured as an external interrupt.
Enabling a special function disables the pin as general-purpose I/O.
57
P5.6/INT14/
MISO
Digital I/O, Type D Port 5.6; External Edge-Selectable Interrupt 14; SPI Master In-Slave
Output. This pin defaults to an input with a weak pullup after reset and functions as general-
purpose I/O. The port pad contains a Schmitt voltage input and can be configured as an
external interrupt. Enabling a special function disables the pin as general-purpose I/O.
32
P6.0/INT15/
TCK
Digital I/O, Type D Port 6.0; External Edge-Selectable Interrupt 15; JTAG Test Clock Input.
This pin defaults to an input with a weak pullup after reset and functions as general-purpose
I/O. The port pad contains a Schmitt voltage input and can be configured as an external
interrupt. Enabling a special function disables the pin as general-purpose I/O.
31
P6.1/INT16/
TDI
Digital I/O, Type D Port 6.1; External Edge-Selectable Interrupt 16; JTAG Test Data Input.
This pin defaults to an input with a weak pullup after reset and functions as general-purpose
I/O. The port pad contains a Schmitt voltage input and can be configured as an external
interrupt. Enabling a special function disables the pin as general-purpose I/O.