HD64336901G Renesas Technology, HD64336901G Datasheet - Page 304

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

If the power supply voltage falls below the Vreset1 (Typ. = 2.3 V) voltage, this LSI enters low-
voltage detection reset operation. When the voltages input on the ExtU and ExtD pins are used as
the compared voltage, ensure to use the LVDR (reset detection voltage: Typ. = 2.3 V) circuit.
Rev. 1.00, 11/03, page 276 of 376
Figure 17.6 Operational Timing of LVDI Circuit (When Compared Voltage is Input
ExtD input voltage
ExtU input voltage
External power
LVDDE
LVDDF
LVDUE
LVDUF
supply voltage
(1)
IRQ0 interrupt
through ExtU and ExtD Pins))
generated
(2)
IRQ0 interrupt
generated
(3)
(4)
Vexd
V
V
reset1
SS