Datasheet

Section 19 Power-On Reset and Low-Voltage Detection Circuits (Optional)
Rev. 4.00 Mar. 15, 2006 Page 411 of 556
REJ09B0026-0400
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.
LVDINT
Vcc
Vint (D)
Vint (U)
VSS
LVDDF
LVDUE
LVDUF
IRQ0 interrupt generated IRQ0 interrupt generated
LVDDE
Vreset1
Figure 19.4 Operational Timing of LVDI Circuit