EMDB652x EM Microelectronic, EMDB652x Datasheet - Page 3

• Manufacturer Part Number: EMDB652x
• Description: Demo Board 4-bit
• Manufacturer: EM Microelectronic

1.3.
1.4.
1.5.
No possibility to switch from one type of microcontroller to the other.
This board does not have serial port transmission. It means, to be able to download
a program you need to have an EM programming box, with our own software
development system.
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On JP1, an ampermeter can be connected to measure the total consumption of the
demo board.
The capacitor ( C1 ) is in parallel to the battery. This gives the opportunity to detect,
during a longer time, the voltage levels ( SVLD ) when the battery is disconnected.
The microcontroller EM6520 is implemented with the LCD VIM-331-DP ( 4 COM and
8 Segments )
The microcontroller EM6521 is implemented with the LCD VIM-503-DP ( 3 COM and
12 Segments )
The microcontroller EM6522 is implemented with the LCD VIM-878-DP ( 4 COM and
32 Segments )
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Be careful the board has to be configured in different way depending on
Equipment needs
Components used
which microcontroller it will be used.
1 microcontroller EM652x
1 quartz 32kHz
1 battery of 3V
1 LCD
1 buzzer used for EM6521 and EM6522
1 RESET button ( S5 )
4 buttons on PortA 0 to 3 ( S4, S3, S2, S1 ) => (P1, P2, P3, P4) in software
application
4 pull down resistors on PortA
1 programming connector
Demoboard EM652x
© EM Microelectronic-Marin SA, 10/99
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