HD64F3694FXV Datasheet, PDF (326/452 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 18 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 18.4 Operational Timing of LVDI Circuit
Rev.5.00 Nov. 02, 2005 Page 296 of 418
REJ09B0028-0500