Initialization Message; Clock Mode; Kitchen Timer Mode; Voltmeter Mode - NEC 78K0R/L 3 Sense it! Series User Manual

78K0R/Lx3 – Sense it!
For information how to navigate through the program please refer to Sample_project_operation_manual.pdf
available on the CDROM in the directory "\Doc\TK78K0R".

9.2 Initialization message

When the board is connect to a power supply the LCD will show up a welcome message "ALL FLASH
MICROCONTROLLER 78K0R/LH3 STARTER KIT" as a ticker until the Cursor is used to leave this init
screen.

9.3 Clock mode

The Clock mode can be separate in two parts, showing the actual time and setting up the time in a 12 - or 24
hour mode. The clock is displayed on the LCD and uses the RTC of the device. To generate an accurate
clock reference timing the 78K0R/Lx3 sub-clock of 32.768 KHz is used.

9.4 Kitchen timer mode

The kitchen timer symbolizes a countdown timer, where the user has to set up the countdown time first and
then starts the countdown. The LCD is updated by using the interval interrupt of the real time counter. After
the countdown has expired a short sound is played through the audio output of the demonstration kit.

9.5 Voltmeter mode

The Voltmeter mode gives the user 2 possibilities of shown measurement results. In both cases the 12bit
st nd
A/D converter is used. The 1 mode only shows the voltage, measured on the A/D converter input. The 2
mode displays the A/D converter result added with the inverted offset input voltage 200mV, amplified 10
times. The measurable voltage range is 0.02V-0.22V with used operational amplifier and 0V – 2V without
used operational amplifier.

9.6 Sensor mode

When the Sensor mode is selected the LCD shows up the measured temperature. The temperature is
measured by a temperature sensor that is connected to an A/D converter input of the 78F1508
microcontroller. The result of the 12 bit A/D conversion is used as PWM duty cycle to control the brightness
of LED1. The temperature can be displayed on the LCD in °Celsius as well as in Fahrenheit. The
temperature range that can be measured is between - 35°C (- 30°F) and 100°C (212°F).

9.7 LCD Evaluation mode

First of all you can change the contrast of the LCD within this mode. Beside this a display test can be
performed. The selected contrast is hold even if the LCD Evaluation mode is left.
nd
The 2 part of the LCD Evaluation mode is a display test where the different LCD driver modes can be
tested.
When performing the display tests please make sure that the right hardware setup is selected for the tested
mode. To check the hardware setup, please refer to chapter 2.8 LCD driver voltage.
Note: The Capacitance display test can not be performed if the board is battery driven.

9.8 Voice reproduction mode

In the Voice reproduction mode a pre-programmed sound sequence can be played via the 12- or 10- bit D/A
converter of the microcontroller. To be able to hear the sound an audio device has to be plugged in the Jack
connector J1 on the TK-78K0R/LH3+LCD board. If the kitchen timer countdown is elapsed during the sound
reproduction the alarm sound is skipped and is played after the sound sequence is finished. The ADPCM
library which is included in the sample project is used to extend the sound data. For further information
regarding the ADPCM library please refer to the regarding Application Note (U19000EJ2V0AN00.pdf)
available on the CDROM in the directory "\Doc\CvADPCM".
_______________________________________________________________________________________________
U20191EE1V0UM00
User's Manual
40