Table of Contents
Advertisement
RH850/U2A 292pin
9. Precautions
9.1
Power-Off Sequence
A dedicated sequence needs to be applied, when the power supply to the board is turned off.
Please follow the below sequence:
1. At first turn the RESET switch SW1 into '2-3 ON' position, so that RESET is permanently asserted.
Alternatively keep SW1 manually in' 2-1 (ON)' position.
2. Turn off the board power supply.
3. After the power supply has shut down, release RESET by returning SW1 into the 'OFF' position.
For details how to apply a RESET, please refer to section 6.2 RESET Switch.
9.2
CAN0RX is Shared with FLASH Programmer Signal FLMD1
When using this product plugged into a motherboard where CAN0 is connected to the CAN-transceiver the FLASH
programmer will not work.
This is because the CAN0RX function is shared with the FLMD1 function on the same device PIN.
Most CAN-transceiver are driving the RX line actively and the FLASH programmer then is not able to change signal
level as required for flashing.
9.3
DeepSTOP Mode when using SVR
It is not possible to use the SVR function (JP23[2-3]: VDD = 1.09 V (SVR_OUTPUT)) together with DeepSTOP mode
operation.
If DeepSTOP mode operation is needed, please use JP23[1-2]: VDD = 1.12 V (VDDs) for core voltage.
Please refer to 3.3 Device Core Voltage (VDD) Selection for further details about VDD voltage setting.
R20UT4545ED0102 Rev.1.02
May 27, 2021
9. Precautions
Page 46 of 58
Advertisement
Table of Contents
