upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 377

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

CHAPTER 21 LOW-VOLTAGE DETECTOR
(b) When used as interrupt
Check that “supply voltage (V
)
detection voltage (V
)” in the servicing routine of the LVI interrupt by
DD
LVI
using bit 0 (LVIF) of the low-voltage detection register (LVIM). Clear bit 0 (LVIIF) of interrupt request flag
register 0L (IF0L) to 0 and enable interrupts (EI).
In a system where the supply voltage fluctuation period is long in the vicinity of the LVI detection voltage, wait
for the supply voltage fluctuation period, check that “supply voltage (V
)
detection voltage (V
)” using the
DD
LVI
LVIF flag, and then enable interrupts (EI).
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User’s Manual U16961EJ4V0UD