TWR-K70F120M Tower Module User's Manual
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Pin
Function
TWR-K70F120M Connection
18
TRACEDATA[2]
PTA8/FTM1_CH0/FTM1_QD_PHA/TRACE_D2
19
GND
GND
20
TRACEDATA[3]
PTA7/FTM0_CH4/TRACE_D3
Note:
Many of the trace signals connected to the debug connector are also connected elsewhere on
the TWR-K70F120M. Refer to Table 6 “I/O Connectors and Pin Usage Table” and Table 7 “TWR-
K70F120M Primary Connector Pinout” for more information.
2.5
Graphical LCD Interface
The K70FN1M0 processor includes an on-chip graphical LCD controller module. The module is not used
directly on the TWR-K70F120M board, but the LCD signals are routed to the Secondary connector,
allowing the connection to an external LCD or additional circuitry on a Tower peripheral module.
The TWR-LCD-RGB will provide an LCD panel and all required external circuitry so that it can interface
directly to the TWR-K70F120M. This is an easy way to evaluate the graphical LCD module on the K70
processor.
2.6
DDR2 Memory
The TWR-K70F120M includes 1Gb of DDR2 memory (MT47H64M16HR-25). The board also includes a
DDR regulator that provides the main 1.8V supply for the memory and the processors SDRAM pads as
well as VTT and VREF voltages.
2.7
NAND Flash
The TWR-K70F120M includes 2Gb of SLC NAND flash memory (MT29F2G15ABAEAWP). The data lines
used for the NAND flash are shared between the NAND flash controller and the FlexBus interface.
Internal arbitration logic in the processor allows for dynamic sharing between the NAND flash and
FlexBus interfaces.
2.8
Infrared Port
An infrared transmit and receive interface is implemented on the board. The CMT_IRO pin directly
drives an infrared diode. The receiver uses an infrared phototransistor connected to an on-chip analog
comparator through a low-pass filter. Internal to the K70 device, the output of the analog comparator
can be routed to a UART module for easier processing of the incoming data stream.
2.9
Accelerometer
An MMA8451Q digital accelerometer is connected to the K70 MCU through an I2C interface and a
GPIO/IRQ signal. Refer to Table 6 “I/O Connectors and Pin Usage Table” for connection details.
2.10
Potentiometer, Pushbuttons, LEDs
The TWR-K70F120M features two pushbutton switches connected to GPIO/interrupt signals, one
pushbutton connected to the master reset signal, four capacitive touch pad electrodes, four user-
controllable LEDs, and a potentiometer connected to an ADC
input signal. Refer to Table 6 “I/O
Connectors and Pin Usage Table” for information about which port pins are connected to these
features.
