Renesas H8 Series Hardware Manual page 489

Section 14 Power-On Reset and Low-Voltage Detection Circuits (H8/38124 Group Only)
External power
supply voltage
extD input voltage
(1)
extU input voltage
LVDINTD
LVDDF
LVDINTU
LVDUF
Figure 14.5 Operational Timing of Low-Voltage Detection Interrupt Circuit
(2)
(3)
IRQ0 interrupt IRQ0 interrupt
generated generated
(Using Pins Vref, extD, and extU)
Rev. 7.00 Mar 10, 2005 page 447 of 652
Vexd
(4)
Vreset1
V
SS
REJ09B0042-0700