HD64F3687HV Datasheet, PDF (402/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Section 20 Power-On Reset and Low-Voltage Detection Circuits (Optional)
this time, the LVDUF bit in LVDSR is set to 1 and an IRQ0 interrupt request is simultaneously
generated.
If the power supply voltage (Vcc) falls below Vreset1 (typ. = 2.3 V) voltage, the LVDR function
is performed.
Vcc
LVDINT
Vint (U)
Vint (D)
Vreset1
VSS
LVDDE
LVDDF
LVDUE
LVDUF
IRQ0 interrupt generated IRQ0 interrupt generated
Figure 20.4 Operational Timing of LVDI Circuit
Rev.5.00 Nov. 02, 2005 Page 368 of 500
REJ09B0027-0500