upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 482

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

CHAPTER 25 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 U15947EJ3V1UD