NEC 78K0/L 3 - See it! Series, Руководство пользователя

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78K0/Lx3 - See it!
User’s Manual U18759EE2V0UM00
17
3.4 External A/D measurement inputs, connector J1
Connector J1 can be configured to measure external analogue signals by using the internal 10-Bit A/D
converter or respectively the 16-bit
∆∑ A/D converter
of the 78K0/LF3 device. To use this mode please
open the corresponding soldering bridges A1 - A8.
J1 Signal J1 Signal
1 P20/ANI0/DS0- 9 GND
2 P21/ANI1/DS0+
10 GND
3 P22/ANI2/DS1- 11 GND
4 P23/ANI3/DS1+ 12 GND
5 P24/ANI4/DS2- 13 GND
6 P25/ANI5/DS2+ 14 GND
7 P26/ANI6/REF- 15 GND
8 P27/ANI7/REF+ 16 GND
Table 3: External A/D measurement inputs, connector J1
3.5 External A/D measurement input, connector J2
Connector J2 can be used to measure an external analogue signal by using the internal 10-Bit A/D
converter or respectively the 16-bit
∆∑ A/D converter
of the 78K0/LF3 device.
J2 Signal
1 P23/ANI3/DS1+
2 GND
Table 4: External A/D measurement input, connector J2
3.6 IDD measurement, connector J4
Connector J4 (not assembled) can be used to measure the current consumption of the 78K0/LF3 device.
For using this mode please open soldering bridge V8.
3.7 External power supply input, connector J5
By using connector J5 (not assembled) external power supply can be applied to the 78K0/Lx3 - See it!
board without a need of an active USB connection.
J5 Input
1 VDD (+5V)
2 GND
Table 5: External power supply input, J3
Note: Be sure to unplug the USB connection before applying external power supply to input J5.
3.8 External main oscillator, Y1
The clock generator of the 78K0/LF3 device can be configured to work with an external oscillator
connected to the X1 and X2 pins. To use this mode equip pad Y1 of the
78K0/Lx3 - See it! board with an
corresponding oscillator. The configuration of the clock generator is described within the user’s manual of
the 78K0/LF3 device.