Y-RH850-F1X-100PIN-PB-T1-V3 User’s Manual
R20UT3959ED0101, Rev. 1.01 19
2019-11-27
Chapter 8 Other circuitry
8.1 Push button for RESET
In order to issue a RESET to the device, the push-button SW1 is available.
8.2 Mode Selection
The PiggyBack Board gives the possibility to configure the following mode pins
• FLMD0 via jumper JP25
• FLMD1 via jumper JP19
• MODE0 via jumper JP28
• MODE1 via jumper JP26
• MODE2 via jumper JP27
To apply “High” or “Low” to the mode pins, the pins 1 and 2, or the pins 2 and 3
(if available) of the corresponding jumper must be closed, respectively.
Note: Pin 1 of all jumpers is marked by a small circle.
CAUTION: Be careful in configuration of mode related pins. Wrong configuration
and operation of the device outside of its specification can cause irregular
behaviour of the device and long term damage cannot be excluded. Be sure to
check the corresponding User’s Manual for details, which modes are specified for
the used device.
Note:
In the very most cases the ‘Normal operating mode’ of the device will be used.
This mode is for execution of the user program. The on-chip debug functions also
use this mode.
To select the ‘Normal operating mode’ of the device, the FLMD0 pin must be
pulled low. To do so, close the pins 2-3 on the jumper JP25:
All other jumper related to the mode selection can be left open.
8.3 Signalling LEDs
Eight LEDs are provided to allow visual observation of the output state of device
port pins. Device pins P8_0 to P8_7 are connected to the odd pins 1 to 15 of the
pin header CN13, while the LEDs 1 to 8 are connected to the even pins 2 to 16,
respectively.
Thus the LEDs can be either connected to
• the device port pins P8_0 to P8_7 by closing the connection on CN13
using a jumper, or
• any device port pin by using the provided wire connections.
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