upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 334
upd78f0103
Manufacturer Part Number
upd78f0103
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103.pdf
(485 pages)
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19.5 Cautions for Low-Voltage Detector
(V
(1) When used as reset
(2) When used as interrupt
<Action>
(a) When used as reset
334
LVI
In a system where the supply voltage (V
In this system, take the following actions.
), the operation is as follows depending on how the low-voltage detector is used.
The system may be repeatedly reset and released from the reset status.
In this case, the time from release of reset to the start of the operation of the microcontroller can be arbitrarily set
by taking action (a) below.
Interrupt requests may be frequently generated. Take action (b) below.
After releasing the reset signal, wait for the supply voltage fluctuation period of each system by means of a
software counter that uses a timer, and then initialize the ports.
CHAPTER 19 LOW-VOLTAGE DETECTOR
DD
) fluctuates for a certain period in the vicinity of the LVI detection voltage
User’s Manual U15836EJ5V0UD
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